WO2023140301A1 - 測定装置及び測定装置の製造方法 - Google Patents
測定装置及び測定装置の製造方法 Download PDFInfo
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- WO2023140301A1 WO2023140301A1 PCT/JP2023/001408 JP2023001408W WO2023140301A1 WO 2023140301 A1 WO2023140301 A1 WO 2023140301A1 JP 2023001408 W JP2023001408 W JP 2023001408W WO 2023140301 A1 WO2023140301 A1 WO 2023140301A1
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- WIPO (PCT)
- Prior art keywords
- measuring device
- vehicle body
- holder
- light
- optical unit
- Prior art date
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
- G01S7/4811—Constructional features, e.g. arrangements of optical elements common to transmitter and receiver
- G01S7/4813—Housing arrangements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/42—Simultaneous measurement of distance and other co-ordinates
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/89—Lidar systems specially adapted for specific applications for mapping or imaging
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
- G01S17/93—Lidar systems specially adapted for specific applications for anti-collision purposes
- G01S17/931—Lidar systems specially adapted for specific applications for anti-collision purposes of land vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
- G01S7/4814—Constructional features, e.g. arrangements of optical elements of transmitters alone
- G01S7/4815—Constructional features, e.g. arrangements of optical elements of transmitters alone using multiple transmitters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/481—Constructional features, e.g. arrangements of optical elements
- G01S7/4817—Constructional features, e.g. arrangements of optical elements relating to scanning
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F55/00—Radiation-sensitive semiconductor devices covered by groups H10F10/00, H10F19/00 or H10F30/00 being structurally associated with electric light sources and electrically or optically coupled thereto
- H10F55/20—Radiation-sensitive semiconductor devices covered by groups H10F10/00, H10F19/00 or H10F30/00 being structurally associated with electric light sources and electrically or optically coupled thereto wherein the electric light source controls the radiation-sensitive semiconductor devices, e.g. optocouplers
- H10F55/25—Radiation-sensitive semiconductor devices covered by groups H10F10/00, H10F19/00 or H10F30/00 being structurally associated with electric light sources and electrically or optically coupled thereto wherein the electric light source controls the radiation-sensitive semiconductor devices, e.g. optocouplers wherein the radiation-sensitive devices and the electric light source are all semiconductor devices
- H10F55/255—Radiation-sensitive semiconductor devices covered by groups H10F10/00, H10F19/00 or H10F30/00 being structurally associated with electric light sources and electrically or optically coupled thereto wherein the electric light source controls the radiation-sensitive semiconductor devices, e.g. optocouplers wherein the radiation-sensitive devices and the electric light source are all semiconductor devices formed in, or on, a common substrate
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/88—Lidar systems specially adapted for specific applications
Definitions
- the present disclosure relates to a measuring device and a method of manufacturing the measuring device.
- Patent Document 1 describes a scanning device that scans laser light by relatively moving a light emitting element, a light receiving element, and an optical system.
- the substrate When a sensor unit having a light-emitting element and a light-receiving element and an optical unit are held by a holder so as to be relatively movable, the substrate may vibrate when fixed to the holder.
- a first object of the present disclosure is to suppress vibration of a substrate fixed to a holder that holds a sensor unit and an optical unit that move relative to each other.
- the holder When a sensor unit having a light-emitting element and a light-receiving element and an optical unit are held by a holder so as to be relatively movable, the holder may vibrate.
- a second object of the present disclosure is to suppress vibration of a holder that holds a sensor unit and an optical unit that move relative to each other.
- a vehicle body attachment member that holds the main body of the measuring device is attached to the vehicle body.
- the measuring device may become large if the vehicle body mounting member is integrally constructed so as to straddle the main body in the width direction.
- a third object of the present disclosure is to reduce the size of the vehicle body mounting member and to reduce the size of the measuring device.
- One form of the present disclosure for achieving the above first object is a measuring apparatus comprising: a sensor unit having a light emitting element that emits light and a light receiving element that receives reflected light; an optical unit that irradiates an object with light emitted from the light emitting element and causes the light receiving element to receive the reflected light; a holder that holds the sensor unit and the optical unit so as to be relatively movable; a substrate that is fixed to the holder;
- An embodiment of the present disclosure for achieving the second object is a sensor unit having a light-emitting element that emits light and a light-receiving element that receives reflected light, an optical unit that irradiates an object with light emitted from the light-emitting element and causes the light-receiving element to receive the reflected light, a spring member that has a fixing portion and a vibrating portion and holds the sensor unit movably with respect to the optical unit by attaching the fixing portion to the optical unit and attaching the sensor unit to the vibrating portion, and the fixing portion of the spring member. and a holder that is attached to hold the sensor unit and the optical unit so as to be relatively movable.
- One form of the present disclosure for achieving the third object is a measuring device comprising: a main body that irradiates an object with light and receives reflected light; and a pair of vehicle body mounting members that attach the main body to a vehicle body while independently holding both sides of the main body in the width direction.
- another aspect of the present disclosure for achieving the third object is a method of manufacturing a measuring device comprising: preparing a main body for irradiating an object with light and receiving reflected light; a pair of car body mounting members for mounting the main body to a car body; adjusting a positional relationship between the pair of car body mounting members;
- FIG. 1A is a perspective view of the measuring device 1.
- FIG. 1B is a perspective view of the measuring device 1 with the vehicle body mounting member 100 removed from the main body 3.
- FIG. FIG. 2 is a schematic diagram of the main body 3.
- FIG. 3A illustrates two-dimensional scanning of laser light.
- FIG. 3B illustrates a two-dimensional scan in one frame.
- FIG. 3C illustrates two-dimensional scanning with multiple channels.
- FIG. 4 illustrates a state in which the housing 30 is removed.
- FIG. 5 illustrates a state in which the holder 40 and the processing substrate 50 are removed.
- FIG. 6 illustrates spring member 60 .
- FIG. 7 illustrates the processing substrate 50 fixed on the holder 40 .
- FIG. 8 illustrates how the processing substrate 50 (and the shield member 91) is removed from the holder 40.
- FIG. 9 illustrates how the support member 80 supports the processing substrate 50 .
- 10 is a perspective view of the support member 80.
- FIG. 11A illustrates the inner wall surface of the upper housing 32.
- FIG. 11B is a cross-sectional view showing the relationship between the amount of projection of the projection 32B of the upper housing 32 and the height of the tip 55.
- FIG. 12 is a perspective view of the main body 3 viewed from another angle. 13 is an exploded explanatory view of the optical unit 20, the spring member 60, and the holder 40.
- FIG. FIG. 14A illustrates the state before the holder 40 is attached.
- FIG. 14B illustrates the state after the holder 40 is attached.
- FIG. 15 is a cross-sectional view of the measuring device 1.
- FIG. 16A illustrates the vehicle body mounting member 100.
- FIG. 16B is a perspective view of the first mounting member 110.
- FIG. 17 illustrates the insert part 24 of the lens housing 23.
- FIG. 18 illustrates an end portion of the vibrating portion 62 of the spring member 60.
- FIG. 19A illustrates how the mounting screw 97 is attached.
- FIG. 19B illustrates how the mounting screw 97 is attached.
- FIG. 20 illustrates jig 200 .
- FIG. 21 illustrates how the vehicle body mounting member 100 is set on the jig 200 .
- FIG. 22 illustrates the positional relationship of members set on the jig 200.
- FIG. 23 illustrates how the contact portion 203 and the projecting portion 41 are brought into contact with each other.
- FIG. 24A illustrates a comparative car body mounting member 100'.
- FIG. 24B
- FIG. 1A is a perspective view of the measuring device 1.
- FIG. 1B is a perspective view of the measuring device 1 with the vehicle body mounting member 100 removed from the main body 3.
- FIG. FIG. 2 is a schematic diagram of the main body 3. As shown in FIG.
- each direction is defined as shown in FIG. 1A.
- a direction parallel to the optical axis (rotationally symmetrical axis of the lens) of the optical system (light-projecting optical system 21 or light-receiving optical system 22) is defined as the Z direction.
- the object to be measured by the measuring device 1 is separated from the measuring device 1 in the Z direction.
- a direction perpendicular to the Z direction and in which the light projecting optical system 21 and the light receiving optical system 22 are aligned is defined as the X direction.
- a direction perpendicular to the Z direction and the X direction is defined as the Y direction.
- the side of the object to be measured (positive side in the Z direction) as viewed from the measuring apparatus 1 may be called “front”, and the opposite side (negative side in the Z direction) may be called “rear”.
- the right side when looking forward from behind is sometimes called “right” and the left side is sometimes called “left”.
- the left-right direction is sometimes referred to as the width direction.
- the upper side in the vertical direction (the positive side in the Y direction) may be called “upper”
- the opposite side (the negative side in the Y direction) may be called “lower”.
- the measuring device 1 is a device that measures the distance to an object.
- the measuring device 1 emits a laser beam, detects the reflected light reflected by the surface of the object, and calculates the distance to the object based on the detection result. Specifically, the measuring device 1 measures the time from when the light emitting element 11 projects a pulsed laser beam to when the light receiving element 12 receives the reflected light, thereby measuring the distance to the object by the TOF method (time of flight).
- the measuring device 1 has a body portion 3 and a vehicle body mounting member 100 .
- the body part 3 is a member that constitutes the body of the measuring device 1 .
- the body portion 3 has a sensor unit 10 and an optical unit 20 .
- the body portion 3 has a housing, a holder, a processing substrate, a spring member, a vibrating member, and a drive unit.
- the sensor unit 10 has a light emitting element 11, a light receiving element 12, and a sensor substrate 13.
- the light emitting element 11 is an element that emits laser light.
- the light receiving element 12 is an element that converts an optical signal into an electrical signal.
- the sensor substrate 13 is a substrate on which the light emitting element 11 and the light receiving element 12 are mounted.
- the sensor unit 10 is configured by mounting the light emitting element 11 and the light receiving element 12 on the same substrate.
- the sensor substrate 13 has multiple light emitting elements 11 and multiple light receiving elements 12 .
- each sensor substrate 13 may have one light emitting element 11 and one light receiving element 12 .
- the optical unit 20 is an optical system for irradiating an object with laser light emitted from the light emitting element 11 and causing the light receiving element 12 to receive reflected light from the object.
- a light-emitting element 11 and a light-receiving element 12 are arranged at conjugate positions of the optical system that the optical unit 20 forms.
- the optical unit 20 has a light projecting optical system 21 and a light receiving optical system 22 .
- the light projection optical system 21 is an optical system that irradiates a target object with laser light emitted from the light emitting element 11 .
- the light emitting surface of the light emitting element 11 is arranged within the focal plane of the light projecting optical system 21 .
- the light projecting optical system 21 irradiates an object with the laser light emitted from the light emitting element 11 as collimated light.
- the light-receiving optical system 22 is an optical system for condensing the reflected light onto the light-receiving element 12 .
- the light-receiving surface of the light-receiving element 12 is arranged within the focal plane of the light-receiving optical system 22 .
- the optical unit 20 is configured by integrally configuring the light-projecting optical system 21 and the light-receiving optical system 22 .
- each of the light projecting optical system 21 and the light receiving optical system 22 is composed of a plurality of lens groups.
- the light projecting optical system 21 and the light receiving optical system 22 may each be composed of one lens.
- the sensor unit 10 and the optical unit 20 relatively move in directions perpendicular to the Z direction (X direction and Y direction). Relative movement between the sensor unit 10 and the optical unit 20 changes the positional relationship of the light emitting element 11 with respect to the optical unit 20, and as a result, the angle at which the laser light is emitted changes. That is, the laser beam can be scanned by relatively moving the sensor unit 10 and the optical unit 20 .
- the sensor unit 10 moves relative to the optical unit 20 by vibrating at predetermined resonance frequencies in the X and Y directions.
- FIG. 3A illustrates two-dimensional scanning of laser light.
- laser light is emitted so as to draw a Lissajous curve as shown in FIG. 3A.
- FIG. 3B illustrates a two-dimensional scan in one frame.
- the measuring device 1 measures the distance (Z coordinate) to the surface of the object at a plurality of points on the Lissajous curve for each measurement of one frame (one three-dimensional image). Thereby, the measuring device 1 can improve the resolution in measuring the coordinates.
- FIG. 3C illustrates two-dimensional scanning with multiple channels. As illustrated in FIG.
- the sensor substrate 13 has a plurality of light emitting elements 11 and a plurality of light receiving elements 12, so that two-dimensional scanning can be performed in different ranges for each channel. This enables measurement over a wide range in the X and Y directions, realizing a wide FOV (field of view).
- FOV field of view
- two-dimensional scanning does not have to follow the Lissajous curve.
- two-dimensional scanning may be performed by performing line scanning in the X direction (or Y direction) a plurality of times while shifting in the Y direction (or X direction).
- only one-dimensional scanning one-way scanning in the X direction or the Y direction may be performed.
- FIG. 4 illustrates a state in which the housing 30 is removed.
- the housing 30 is a member (case) that houses the optical unit 20 and the sensor unit 10 .
- the housing 30 has a rear housing 31 , an upper housing 32 and a lower housing 33 .
- the rear housing 31 covers the rear portion of the main body portion 3 .
- the rear housing 31 has a connector 311 and a coil board 312 .
- the connector 311 is a connecting portion that electrically connects with an external power source or a vehicle ECU.
- the coil board 312 is a board for driving the coil 71 (see FIG. 2) of the drive unit 70 .
- the upper housing 32 covers the upper portion of the body portion 3 .
- the lower housing 33 covers the lower portion of the main body portion 3 .
- a gap is formed between the upper housing 32 and the lower housing 33 on the side surface of the housing 30, and the projecting portion 41 of the holder 40 is inserted through the gap.
- a gap between the housing 30 (the upper housing 32 and the lower housing 33) and the holder 40 is closed with a gasket 35. As shown in FIG.
- the gasket 35 is a member that closes the gap between the housing 30 (the upper housing 32 and the lower housing 33) and the holder 40.
- the gasket 35 is sandwiched between the upper housing 32 and the lower housing 33 on the side surface of the body portion 3 .
- the gasket 35 is formed with an insertion portion 35A through which the projecting portion 41 of the holder 40 is inserted.
- the gasket 35 is made of rubber so as to easily close the gap between the housing 30 and the holder 40 .
- FIG. 5 illustrates a state in which the holder 40 and the processing substrate 50 are removed.
- the holder 40 is a member that holds the sensor unit 10 and the optical unit 20 .
- the holder 40 is fixed to a spring member 60 fixed to the optical unit 20 and indirectly holds the optical unit 20 via the spring member 60 .
- the sensor unit 10 is attached to the spring member 60, and the holder 40 holds the sensor unit 10 and the optical unit 20 so as to be relatively movable.
- the holder 40 is composed of a right holder 40A and a left holder 40B. Although the holder 40 is composed of two parts in this example, it may alternatively be composed of one part. However, by configuring the holder 40 with two parts, the right holder 40A and the left holder 40B, the size of the holder 40 can be reduced.
- the holder 40 has a projecting portion 41 .
- the protruding portion 41 protrudes outward from the main body of the holder 40 to the left and right.
- the projecting portion 41 is inserted through the gap between the upper housing 32 and the lower housing 33 .
- the ends of the protruding portions 41 protrude outside the housing 30 .
- An end portion of the projecting portion 41 projecting to the outside of the housing 30 is held by the vehicle body mounting member 100 . That is, the projecting portion 41 is configured to be attached to the vehicle body attachment member 100 .
- the processing board 50 is a board that performs various processes such as control processing and signal processing (arithmetic processing) of the sensor unit 10 .
- a chip (not shown in FIG. 5) for controlling the light emission timing of the light emitting element 11 and calculating the distance to the object based on the light receiving signal of the light receiving element 12 is mounted on the processing board 50 .
- the processing substrate 50 is fixed on the holder 40 .
- One end of the processing substrate 50 is supported by the holder 40 via the support member 80 .
- a shield member 91 is arranged between the processing substrate 50 and the optical unit 20 .
- a heat transfer sheet 92 is arranged between the processing substrate 50 and the upper housing 32 .
- the spring member 60 is a member that holds the optical unit 20 and the sensor unit 10 relatively movably.
- the spring member 60 holds the sensor unit 10 with respect to the optical unit 20 so as to vibrate at predetermined resonance frequencies in the X and Y directions.
- FIG. 6 illustrates the spring member 60.
- the spring member 60 has a fixed portion 61 and a pair of vibrating portions 62 .
- the fixed portion 61 is fixed to the optical unit 20 .
- the fixed portion 61 is also fixed to the holder 40 .
- the fixed portion 61 has a strip shape (plate shape) extending in the front-rear direction, and is arranged in the center of the spring member 60 in the vertical direction.
- the vibrating section 62 vibrates.
- the vibrating portion 62 is U-shaped (tuning fork-shaped).
- the vibrating portion 62 has a branch portion 621, a first bent portion 62A, and a second bent portion 62B.
- the branching portion 621 is a portion between the fixed portion 61 and the first bent portion 62A and the second bent portion 62B, and is a portion that branches the first bent portion 62A and the second bent portion 62B from the fixed portion 61 .
- the first bent portion 62A and the second bent portion 62B are cantilever beam-like portions extending from the branch portion 621 and bent at a predetermined natural frequency.
- the base end (front end) of the first bent portion 62A is connected to the branch portion 621, and the opposite end (rear end; tip) is connected to the sensor unit 10. As shown in FIG.
- the base end (front end) of the second bent portion 62B is connected to the branch portion 621 and the opposite end (rear end; tip) is connected to the vibrating member 65 .
- the vibrating portion 62 including the first bent portion 62A and the second bent portion 62B in a predetermined vibration mode the sensor unit 10 vibrates in the X direction and the Y direction with respect to the optical unit 20 at predetermined resonance frequencies.
- a fixed portion 61 of the spring member 60 is arranged between a pair of vibrating portions 62 . Therefore, since the vibration of the pair of vibrating portions 62 is canceled in the fixed portion 61 , the fixed portion 61 is less likely to vibrate even during the relative movement between the optical unit 20 and the sensor unit 10 .
- the vibration member 65 is a member for causing the sensor unit 10 to resonate.
- the vibration member 65 is held by the spring member 60 .
- the left and right edges of the vibrating member 65 are connected to the second bent portions 62B of the spring member 60 .
- the sensor unit 10 resonates via the spring member 60 .
- the sensor unit 10 moves relative to the optical unit 20 in the X and Y directions.
- the drive unit 70 is a member (motor) that generates drive force for relatively moving the optical unit 20 and the sensor unit 10 .
- the drive unit 70 has a coil 71 and a magnet 72 (see FIG. 2).
- the coil 71 is fixed to the housing 30 (rear housing 31) and constitutes a stator.
- the magnet 72 is fixed to the vibrating member 65 and constitutes a mover.
- the magnet 72 may constitute the stator and the coil 71 may constitute the mover.
- wiring to the coil 71 becomes easier than when the coil 71 constitutes the mover.
- the drive unit 70 is not limited to the motor configured by the coil 71 and the magnet 72, and may be configured by other actuators such as piezoelectric transducers.
- the vehicle body attachment member 100 is a member that attaches the main body portion 3 to the vehicle body (see FIGS. 1A and 1B).
- a pair of vehicle body mounting members 100 are arranged on the left and right sides of the body portion 3 .
- the pair of vehicle body mounting members 100 hold projecting portions 41 of the holder 40 projecting from the left and right side surfaces of the body portion 3, respectively.
- the vehicle body mounting member 100 has a first mounting member 110 and a second mounting member 120 .
- the body portion 3 is held by the vehicle body mounting member 100 by sandwiching the projecting portion 41 of the holder 40 between the first mounting member 110 and the second mounting member 120 .
- a damper member 130 is arranged between the first mounting member 110 and the second mounting member 120 and the holder 40 .
- the damper member 130 is a rubber member that absorbs vibration.
- FIG. 7 illustrates the processing substrate 50 fixed on the holder 40 .
- FIG. 8 illustrates how the processing substrate 50 (and the shield member 91) is removed from the holder 40. As shown in FIG.
- the holder 40 has a fixing portion 42 , an alignment pin 43 and a mounting portion 44 .
- the processing substrate 50 also has a fixing hole 51 and an alignment hole 52 .
- the fixing part 42 is a part for fixing the processing substrate 50 .
- the fixed part 42 is configured by a screw hole.
- the processing substrate 50 is fixed to the fixing portion 42 by fastening the fixing screw 941 inserted through the hole 51 of the processing substrate 50 to the fixing portion 42 .
- the fixing portion 42 is also a portion for fixing the shield member 91 .
- the holder 40 has three fixing parts 42 .
- one fixing portion 42 is provided on the right holder 40A, and two fixing portions 42 are provided on the left holder 40B.
- two fixing portions 42 may be provided on the right holder 40A, and one fixing portion 42 may be provided on the left holder 40B.
- Fixing holes 51 are arranged at four corners of the processing substrate 50 , and three of the four corners are fixed to the holder 40 .
- the processing substrate 50 is fixed to the holder 40 at three points.
- the alignment pin 43 is a part for aligning the position of the holder 40 with respect to the substrate 50 to be processed. By fitting the positioning pins 43 of the holder 40 into the positioning holes 52 of the processing substrate 50 , the positions of the holder 40 and the processing substrate 50 can be aligned, and the processing substrate 50 can be fixed to the holder 40 at a predetermined position.
- one positioning pin 43 is provided for each of the right holder 40A and the left holder 40B.
- each of the parts constituting the holder 40 is provided with an alignment pin 43 .
- only one holder 40 may be provided with the alignment pin 43 .
- the holder 40 may not have the alignment pin 43 .
- the alignment pin 43 is also a part for aligning the shield member 91 .
- the mounting portion 44 is a portion for fixing a support member 80 (described later).
- the mounting portion 44 is configured by a screw hole.
- the mounting portion 44 is also a portion for fixing the shield member 91 together with the fixing portion 42 .
- the processing substrate 50 since the processing substrate 50 is fixed to the holder 40 that holds the sensor unit 10 and the optical unit 20 that move relative to each other, the processing substrate 50 may vibrate. Further, as described above, if the three corners of the processing substrate 50 are only fixed to the holder 40, the unfixed corners may vibrate, and the vibration of the processing substrate 50 may cause noise. Therefore, in this embodiment, the vibration of the processing substrate 50 is suppressed by supporting the unfixed portion of the processing substrate 50 with the supporting member 80 .
- FIG. 9 illustrates how the support member 80 supports the processing substrate 50 .
- 10 is a perspective view of the support member 80.
- FIG. For explanation, the support member 80 in FIG. 9 is hatched.
- the support member 80 is a member that supports the processing substrate 50 .
- the support member 80 is an elastically deformable portion. By deforming the supporting member 80 while supporting the end portion of the processing substrate 50 , the supporting member 80 can absorb the vibration of the processing substrate 50 and suppress the vibration of the processing substrate 50 .
- the support member 80 is made of resin. However, as long as it can be elastically deformed, it may be made of a material other than resin (for example, metal). Note that the support member 80 is made of a material that is softer than the processing substrate 50 . In other words, the support member 80 is made of a member that is more elastically deformable in the vertical direction than the processing substrate 50 . As a result, the support member 80 is easily deformed when a load (particularly a load in the vertical direction) is applied to the processing substrate 50 , so that an excessive load can be suppressed from being applied to the processing substrate 50 .
- the support member 80 has a first fixing portion 81 , a second fixing portion 82 and a connecting portion 83 .
- the first fixing part 81 is a part for fixing the support member 80 to the holder 40 .
- the first fixing portion 81 is configured by a through hole.
- the support member 80 is fixed to the holder 40 by fastening the first fixing screw 951 inserted through the first fixing portion 81 to the mounting portion 44 of the holder 40 .
- the second fixing part 82 is a part for fixing the supporting member 80 to the processing substrate 50 .
- the second fixing portion 82 is configured by a screw hole.
- the processing substrate 50 is fixed to the support member 80 by fastening the second fixing screw 952 inserted through the hole 51 (the hole provided at the corner not fixed to the holder 40 ) of the processing substrate 50 to the second fixing portion 82 .
- the connecting portion 83 is a portion that connects the first fixing portion 81 and the second fixing portion 82 .
- the connecting portion 83 is an elastically deformable portion.
- the connecting portion 83 is configured to elastically deform between the first fixing portion 81 and the second fixing portion 82 .
- the elastic deformation of the connecting portion 83 allows displacement of the processing substrate 50 with respect to the holder 40 . This enables the support member 80 to absorb the vibration of the processing substrate 50 and suppress the vibration of the processing substrate 50 .
- the connecting portion 83 has a plate-like portion extending in a direction perpendicular to the vertical direction (horizontal direction) from the first fixing portion 81, allowing the second fixing portion 82 to be displaced in the vertical direction with respect to the first fixing portion 81.
- vertical vibration of the unfixed end of the processing substrate 50 can be absorbed, and vertical vibration of the end of the processing substrate 50 can be suppressed.
- the support member 80 also has alignment pins 84 (84A, 84B).
- the alignment pin 84 is a part for aligning the support member 80 with respect to the processing substrate 50 .
- the support member 80 has a first pin 84A and a second pin 84B as the alignment pins 84.
- the processing substrate 50 has a reference hole 53A and an elongated hole 53B as the alignment portion 53. As shown in FIG.
- the first pin 84A is an alignment pin that fits into the reference hole 53A of the processing substrate 50.
- the second pin 84B is an alignment pin that fits into the long hole 53B of the processing substrate 50 .
- the reference hole 53A is a hole into which the first pin 84A is fitted.
- the reference hole 53A is a hole with a circular cross section.
- the long hole 53B is a hole into which the second pin 84B is fitted.
- the long hole 53B is a hole extending in the direction of the reference hole 53A.
- the two alignment pins 84 By making the hole into which one of the two alignment pins 84 (the first pin 84A and the second pin 84B) is fitted into the elongated hole 53B, the two alignment pins 84 (84A and 84B) can be fitted to the respective alignment portions 53 even if there is a tolerance.
- the elongated holes 53B are provided on the peripheral edge of the processing substrate 50 .
- the long hole 53B is configured as a recess (notch) recessed from the peripheral edge of the processing substrate 50 .
- the long hole 53B has a shape that is open at the peripheral edge of the processing substrate 50 . Accordingly, compared to the case where the elongated holes 53B are arranged inside the periphery of the processed substrate 50 (when the elongated holes 53B are closed), the size of the processing substrate 50 can be reduced.
- the elongated hole 53B may be arranged inside the peripheral edge of the processing substrate 50 so that the elongated hole 53B is closed.
- the support member 80 may not have the alignment pin 84 and the processing substrate 50 may not have the alignment portion 53 (the reference hole 53A and the elongated hole 53B).
- the second fixing portion 82 of the support member 80 is arranged between two alignment pins 84 (first pin 84A and second pin 84B). This makes it difficult for the two alignment pins 84 (the first pin 84A and the second pin 84B) to come off the alignment portion 53 of the processing substrate 50 when the support member 80 is fixed to the processing substrate 50 by the second fixing portion 82 .
- the second fixing portion 82 does not have to be arranged between the two alignment pins 84 .
- a rib 85 is provided between the second fixing portion 82 and the alignment pin 84 (specifically, the second pin 84B). Since the second fixing portion 82 and the alignment pin 84 are integrated by the rib 85, even if the support member 80 (more specifically, the connecting portion 83) is elastically deformed, the positional relationship between the second fixing portion 82 and the alignment pin 84 is less likely to change. This makes it difficult for the alignment pin 84 to come off from the alignment part 53 of the processing substrate 50 even if the support member 80 (specifically, the connecting part 83 ) is elastically deformed. However, the rib 85 may not be provided between the second fixing portion 82 and the alignment pin 84 .
- the shield member 91 is an electromagnetic shield (electromagnetic shield member) made of a conductive material.
- the shield member 91 is configured by bending a metal plate, but may be configured with another material.
- the shield member 91 is arranged between the processing substrate 50 and the optical unit 20 .
- the shield member 91 suppresses leakage of electromagnetic waves generated in the processing substrate 50 to the outside, or suppresses the processing substrate 50 from being affected by electromagnetic waves from the outside.
- the housing 30 of the measuring apparatus 1 accommodates the sensor unit 10, the optical unit 20, and the processing substrate 50 while exposing the light input/output surface of the optical unit 20. Due to the structure of the measuring apparatus 1 as described above, electromagnetic waves may leak or enter via the optical unit 20 . Therefore, it is effective to dispose the shield member 91 between the processing substrate 50 and the optical unit 20 .
- the shield member 91 is fixed to the holder 40 together with the processing substrate 50 and the support member 80 .
- the shield member 91 has holes for fixing similarly to the processing substrate 50 .
- the shield member 91 is fixed together with the processing substrate 50 by fastening the fixing screw 941 inserted through the hole of the shield member 91 to the fixing portion 42 of the holder 40 .
- the shield member 91 is fixed together with the support member 80 by fastening the first fixing screw 951 inserted through the hole of the shield member 91 to the mounting portion 44 of the holder 40 .
- the fixing portion 42 and the mounting portion 44 of the holder 40 not only have the function of fixing the processing substrate 50 , but also have the function of fixing the shield member 91 .
- the shield member 91 can be fixed without increasing the fixing portion 42 of the holder 40, so that the size of the holder 40 and the measuring device 1 can be reduced.
- a portion for fixing the processing substrate 50 and a portion for fixing the shield member 91 may be provided separately.
- the shield member 91 is formed with an alignment hole in the same manner as the processing substrate 50 .
- the shield member 91 can be aligned with the holder 40 together with the processing substrate 50 .
- the alignment pins 43 of the holder 40 have not only the function of aligning the processing substrate 50 but also the function of aligning the shield member 91 .
- the shield member 91 can be aligned without increasing the alignment pins 43 of the holder 40, so that the size of the holder 40 and the measuring device 1 can be reduced.
- a portion for aligning the processing substrate 50 and a portion for aligning the shield member 91 may be provided separately.
- the shield member 91 When the shield member 91 is fixed to the holder 40 together with the processing substrate 50, the shield member 91 preferably has an escape portion 91A (see FIG. 8).
- the relief portion 91A is a concave portion for avoiding contact with the support member 80. As shown in FIG. By providing the relief portion 91 ⁇ /b>A in the shield member 91 , it is possible to prevent the deformed support member 80 from contacting the shield member 91 . However, the shield portion may not have the relief portion 91A.
- the heat transfer sheet 92 (see FIG. 4) is a sheet-like member for promoting heat dissipation from the processing substrate 50 .
- the heat transfer sheet 92 is arranged between the processing substrate 50 and the upper housing 32 .
- the heat transfer sheet 92 transfers the heat of the processing substrate 50 to the upper housing 32 .
- the heat transfer sheet 92 is sandwiched between the processing substrate 50 and the upper housing 32 and compressed in the thickness direction.
- the thermal conductivity of the heat transfer sheet 92 increases as the portion is compressed. However, when compressive stress is applied to the heat transfer sheet 92 , a load is applied to the processing substrate 50 .
- FIG. 11A illustrates the inner wall surface of the upper housing 32.
- FIG. 11B is a cross section showing the relationship between the amount of projection of the projection 32B of the upper housing 32 and the height of the chip 55.
- FIG. 11B is a cross section showing the relationship between the amount of projection of the projection 32B of the upper housing 32 and the height of the chip 55.
- the housing 30 (here, the upper housing 32) has a plurality of protrusions 32B.
- the convex portion 32B is a portion for compressing the heat transfer sheet 92 .
- the convex portion 32B is a convex portion provided on the inner wall surface of the housing 30 and protrudes toward the substrate. In other words, the convex portion 32B is a portion that protrudes downward from the inner wall surface of the housing 30 .
- the compressibility of the heat transfer sheet 92 is high at the portion where the protrusions 32B are provided.
- the convex portion 32B is arranged so as to face the chip 55 (semiconductor element) mounted on the substrate.
- the compressibility of the heat transfer sheet 92 can be increased in the region in contact with the chip 55 .
- the heat of the chip 55 can be easily dissipated.
- the heat transfer sheet 92 is sandwiched between the chip 55 of the processing substrate 50 and the convex portion 32B of the upper housing 32. As shown in FIG. Also, the heat transfer sheet 92 is compressed in the thickness direction between the chip 55 and the convex portion 32B.
- the projection amounts of the plurality of projections 32B are different.
- the amount of projection of the convex portion 32B differs according to the height of the opposing chip 55 .
- the amount of projection of the convex portion 32B is set larger as the opposing tip 55 is lower.
- the sum of the protrusion amount of the convex portion 32B and the height of the chip 55 is set substantially constant. Thereby, the compressibility of the heat transfer sheet 92 can be made uniform in any of the chips 55 .
- the amount of protrusion of all the convex portions 32B small according to the highest chip 55 (or to raise the inner wall surface of the upper housing 32).
- the compressibility of the heat transfer sheet 92 is low between the short chip 55 and the convex portion 32B, and as a result, heat dissipation from the short chip 55 may be insufficient.
- the projecting amount of the convex portion 32B is set larger as the height of the opposing chip 55 is lower. Therefore, it is possible to suppress the load applied to the processing substrate 50 by suppressing the pressing force applied to the chip 55 and to improve the heat dissipation of the chip 55.
- the dimensional tolerance of the gap between the processing substrate 50 and the upper housing 32 becomes large (because the dimensional tolerance of the gap between the processing substrate 50 and the upper housing 32 is an integrated value of the dimensional tolerance and mounting error of each member). Therefore, if all the projections 32B have the same amount of protrusion, if the gap between the processing substrate 50 and the upper housing 32 is the narrowest within the range of dimensional tolerance, there is a possibility that a pressing force will be applied to the processing substrate 50 at the position of the high chip 55, and a load will be applied to the processing substrate 50.
- the structure in which the projecting amount of the convex portion 32B is increased as the height of the facing chip 55 is lower as in the present embodiment is particularly effective when the processing substrate 50 is fixed to the holder 40 and not fixed to the upper housing 32 (in other words, when the dimensional tolerance of the gap between the processing substrate 50 and the upper housing 32 is large).
- the heat generated in the processing substrate 50 is transferred to the upper housing 32 through the heat transfer sheet 92.
- the upper housing 32 has heat radiation fins 32A.
- the heat radiation fins 32A of the upper housing 32 are provided on the back surface of the area of the inner wall surface of the upper housing 32 in contact with the heat transfer sheet 92 .
- the heat radiating fins 32A of the upper housing 32 be provided on the rear surface of the portion where the projections 32B are provided.
- the heat radiation fins 32A may be provided on other parts of the upper housing 32.
- the upper housing 32 may be provided with no heat radiating fins 32A.
- FIG. 12 is a perspective view of the main body 3 viewed from another angle.
- the rear housing 31 and the lower housing 33, as well as the upper housing 32 be provided with heat radiation fins (31A, 33A).
- the heat in the internal space of the housing 30 and the heat transmitted from the upper housing 32 via the heat transfer sheet 92 are easily radiated to the outside.
- Radiation fins may be provided on other parts of the rear housing 31 and the lower housing 33 .
- the rear housing 31 and the lower housing 33 may not have the radiation fins (31A, 33A).
- the measuring device 1 has the sensor unit 10, the optical unit 20, the holder 40, and the processing substrate 50.
- the sensor unit 10 has a light emitting element 11 that emits light and a light receiving element 12 that receives reflected light.
- the optical unit 20 irradiates an object with the light emitted from the light emitting element 11 and causes the light receiving element 12 to receive the reflected light.
- the holder 40 holds the sensor unit 10 and the optical unit 20 so as to be relatively movable.
- the processing substrate 50 is a substrate fixed to the holder 40 .
- the processing substrate 50 is fixed to the holder 40 that holds the sensor unit 10 and the optical unit 20 that move relative to each other, so the processing substrate 50 may vibrate. Therefore, the measuring apparatus 1 of the present embodiment has a deformable support member 80 that supports the edge of the processing substrate 50 from the holder 40 . Accordingly, the support member 80 deforms while supporting the end portion of the processing substrate 50 , so that the support member 80 can absorb the vibration of the processing substrate 50 and suppress the vibration of the processing substrate 50 .
- the processing substrate 50 is fixed to the holder 40 at three of the four corners of the processing substrate 50 . If the four corners of the processing substrate 50 are fixed to the holder 40, the processing substrate 50 may be subjected to an excessive load due to dimensional tolerance due to the large number of fixing points. On the other hand, if the processing substrate 50 is only fixed at three points to the holder 40, the unfixed corners may vibrate, and the vibration of the processing substrate 50 may cause noise. Therefore, in this embodiment, the processing substrate 50 is supported from the holder 40 by the support members 80 at the corners of the processing substrate 50 that are not fixed to the holder 40 . As a result, vibration of the processing substrate 50 can be suppressed while suppressing the load applied to the processing substrate 50 .
- the support member 80 has a first fixing portion 81 fixed to the holder 40, a second fixing portion 82 fixed to the substrate, and a deformable connecting portion 83 connecting the first fixing portion 81 and the second fixing portion 82 (see FIG. 10).
- the elastic deformation of the connecting portion 83 allows displacement of the processing substrate 50 with respect to the holder 40 , thereby making it possible to suppress vibration of the processing substrate 50 .
- the support member 80 is not limited to the structure shown in FIG.
- the support member 80 has alignment pins 84 and the processing substrate 50 has alignment portions 53 that align with the alignment pins 84 of the support member 80 .
- the support member 80 can be fixed at a predetermined position with respect to the processing substrate 50 .
- the alignment portion 53 of the processing substrate 50 is a concave portion on the peripheral edge. Accordingly, compared to the case where the elongated holes 53B are arranged inside the periphery of the processed substrate 50 (when the elongated holes 53B are closed), the size of the processing substrate 50 can be reduced.
- the measuring apparatus 1 described above has a housing 30 that accommodates the sensor unit 10 , the optical unit 20 and the processing substrate 50 while exposing the light input/output surface of the optical unit 20 . Due to the structure of the measuring apparatus 1 as described above, electromagnetic waves may leak or enter via the optical unit 20 . Therefore, in the measuring apparatus 1 of this embodiment, an electromagnetic shield is arranged between the processing substrate 50 and the optical unit 20 . As a result, it is possible to suppress the electromagnetic waves generated in the processing substrate 50 from leaking to the outside, or it is possible to suppress the processing substrate 50 from being affected by the electromagnetic waves from the outside. However, the measuring device 1 does not have to include the shield member 91 .
- a heat transfer sheet 92 is sandwiched between the processing substrate 50 and the housing 30 .
- the heat of the processing substrate 50 can be easily transferred to the housing 30 .
- the measuring device 1 does not have to include the heat transfer sheet 92 .
- the processing substrate 50 has a plurality of chips 55 with different heights
- the housing 30 has a plurality of protrusions 32B that protrude toward the chips 55.
- the amount of protrusion of the protrusions 32B is set larger as the facing chips 55 are lower, and the heat transfer sheet 92 is compressed in the thickness direction between the chips 55 and the protrusions 32B. Thereby, the compressibility of the heat transfer sheet 92 can be made uniform in any of the chips 55 .
- the protrusions 32B of the housing 30 may have the same protrusion amount, or the housing 30 may not have the protrusions 32B.
- the housing 30 desirably has heat radiation fins 32A on its outer surface.
- the measurement device 1 has a structure that facilitates heat dissipation to the outside.
- the housing 30 may not be provided with heat radiating fins.
- FIG. 14A illustrates the state before the holder 40 is attached.
- FIG. 14B illustrates the state after the holder 40 is attached.
- the optical unit 20 has a lens housing 23 (lens barrel) that houses a lens.
- a side surface of the lens housing 23 is provided with a fixing portion 24A and an alignment pin 24B.
- the fixed portion 24A is a portion (screw hole) where the spring member 60 is fixed to the optical unit 20 (lens housing 23).
- the alignment pin 24B is a part for aligning the spring member 60 (and the holder 40).
- the fixing portion 61 of the spring member 60 is formed with a first hole 61A, a second hole 61B, and an alignment hole 61C.
- the first hole 61A is a hole (through hole) for screwing the spring member 60 to the optical unit 20 .
- the second hole 61B is a hole for screwing the holder 40 .
- the alignment hole 61 ⁇ /b>C is a hole for aligning the spring member 60 with the optical unit 20 .
- the holder 40 has a fixing portion 45 .
- a positioning hole 46 is formed in the holder 40 .
- the fixing portion 45 is a portion for screwing the holder 40 to the spring member 60 .
- the alignment hole 46 is a hole for aligning the holder 40 with respect to the optical unit 20 .
- the spring member 60 has a fixed portion 61 and a vibrating portion 62 (see FIG. 6). As shown in FIG. 14A, the fixed portion 61 of the spring member 60 is attached to the optical unit 20, and the sensor unit 10 (or the vibrating member 65) is attached to the end (rear end; tip) of the vibrating portion 62. As shown in FIG. Thereby, the spring member 60 holds the sensor unit 10 relatively movably with respect to the optical unit 20 . In such a structure, if the holder 40 is attached to a vibrating portion such as the vibrating portion 62, the holder 40 vibrates, and as a result, the vibration of the holder 40 may be transmitted to the vehicle body.
- a vibrating portion such as the vibrating portion 62
- the holder 40 is attached to the fixing portion 61 of the spring member 60 .
- the fixed portion 61 is arranged between the pair of vibrating portions 62, and since the vibration of the pair of vibrating portions 62 is canceled out in the fixed portion 61, the fixed portion 61 is a portion that does not easily vibrate even during the relative movement between the optical unit 20 and the sensor unit 10. Therefore, by attaching the holder 40 to the fixing portion 61 of the spring member 60, the vibration of the holder 40 can be suppressed, so that the transmission of the vibration to the vehicle body can be suppressed.
- FIG. 15 is a cross-sectional view of the measuring device 1.
- FIG. FIG. 15 shows how the vehicle body mounting member 100 holds the holder 40 .
- the holder 40 holding the sensor unit 10 and the optical unit 20 is also accommodated in the housing 30 .
- the vehicle body mounting member 100 holds the housing 30 to hold the main body 3
- the vibration of the housing 30 may be transmitted to the vehicle body.
- the vehicle body mounting member 100 hold the holder 40 in which vibration is suppressed rather than holding the housing 30 . Therefore, in this embodiment, a gap is formed between the upper housing 32 and the lower housing 33 on the side surface of the housing 30 .
- the holder 40 has a projecting portion 41 .
- the projecting portion 41 is inserted through the gap of the housing 30 (the gap between the upper housing 32 and the lower housing 33).
- the protrusion 41 of the holder 40 protrudes outside the housing 30 through a gap in the housing 30 . Accordingly, the vehicle body mounting member 100 can hold the holder 40 by gripping the projecting portion 41 projecting to the outside of the housing 30 . Therefore, in the present embodiment, transmission of vibration to the vehicle body can be suppressed.
- the measuring device 1 includes a gasket 35 that closes the gap between the housing 30 and the projecting portion 41 of the holder 40 .
- the gasket 35 is desirably made of flexible rubber. By interposing the gasket 35 between the housing 30 and the holder 40, it is possible to prevent the housing 30 and the holder 40 from being fixed excessively firmly. As a result, transmission of the vibration of the housing 30 to the holder 40 can be suppressed, so that transmission of the vibration to the vehicle body can be suppressed.
- the stator (coil 71) of the drive unit 70 is fixed to the housing 30 (see FIG. 2). Therefore, the housing 30 is a member that vibrates more easily than the holder 40 . Therefore, it is desirable that the vehicle body mounting member 100 hold the holder 40 rather than the housing 30 . Therefore, the structure in which the vehicle body mounting member 100 holds the projecting portion 41 of the holder 40 is particularly desirable in the case of a structure in which the stator (coil 71 ) of the drive unit 70 is fixed to the housing 30 .
- the vehicle body mounting member 100 clamps the projecting portion 41 of the holder 40 via the damper member 130 .
- the vehicle body mounting member 100 has a first mounting member 110 and a second mounting member 120.
- the protrusion 41 of the holder 40 is arranged between the first mounting member 110 and the second mounting member 120.
- Damper members 130 are arranged between the first mounting member 110 and the projecting portion 41 and between the second mounting member 120 and the projecting portion 41, respectively.
- the damper member 130 By fastening the first mounting member 110 and the second mounting member 120 with a screw (not shown), the damper member 130 is vertically compressed, and the projecting portion 41 of the holder 40 is sandwiched between the first mounting member 110 and the second mounting member 120 via the damper member 130.
- the damper member 130 By holding the projecting portion 41 of the holder 40 between the vehicle body mounting member 100 and the damper member 130 as in the present embodiment, it is possible to suppress transmission of vibration of the main body 3 (especially vertical vibration) to the vehicle body.
- the structure in which the vehicle body mounting member 100 clamps the projecting portion 41 of the holder 40 via the damper member 130 is not limited to the one using the first mounting member 110 and the second mounting member 120 as shown in FIG. 15, and other structures may be used.
- FIG. 16A illustrates the vehicle body mounting member 100.
- FIG. 16B is a perspective view of the first mounting member 110.
- FIG. 16A illustrates the vehicle body mounting member 100.
- FIG. 16B is a perspective view of the first mounting member 110.
- FIG. 16A illustrates the vehicle body mounting member 100.
- FIG. 16B is a perspective view of the first mounting member 110.
- FIG. 16A illustrates the vehicle body mounting member 100.
- FIG. 16B is a perspective view of the first mounting member 110.
- the first mounting member 110 has a vehicle body mounting portion 111 , a fixing portion 112 and a housing portion 113 .
- the vehicle body mounting portion 111 is a portion (mounting hole) for mounting the vehicle body mounting member 100 to the vehicle body.
- the fixing portion 112 is a portion for fixing the second mounting member 120 .
- the accommodation portion 113 is a portion that accommodates the damper member 130 .
- the accommodating portion 113 is formed in a concave shape, and the damper member 130 is accommodated in the space inside the concave accommodating portion 113 .
- the housing portion 113 has a bottom surface 113A and an inner wall surface 113B rising from the bottom surface 113A. Damper member 130 is accommodated in a space surrounded by bottom surface 113A and inner wall surface 113B.
- the bottom surface 113A is a surface perpendicular to the vertical direction (a surface parallel to the horizontal direction).
- the bottom surface 113 ⁇ /b>A is a surface facing the projecting portion 41 of the holder 40 .
- the bottom surface 113A serves as a mounting surface on which the damper member 130 is mounted.
- a damper member 130 is sandwiched between the bottom surface 113A and the lower surface of the projecting portion 41 .
- the inner wall surface 113B is a surface parallel to the vertical direction.
- the inner wall surface 113B has a pair of opposing surfaces (first surface) perpendicular to the front-rear direction and a pair of opposing surfaces (second surface) perpendicular to the left-right direction.
- a portion of the inner wall surface 113B of the first mounting member 110 is provided to the same height as the side surface of the protruding portion 41 of the holder 40 to form a contact portion 113C that contacts the protruding portion 41 .
- the contact portion 113 ⁇ /b>C of the first mounting member 110 contacts the projecting portion 41 , thereby suppressing a large horizontal displacement of the projecting portion 41 of the holder 40 with respect to the vehicle body mounting member 100 .
- the contact portion 113 ⁇ /b>C of the first mounting member 110 functions as a stopper that limits the maximum amount of horizontal displacement of the holder 40 .
- the contact portion 113C is not limited to the form shown in FIG.
- the second mounting member 120 may have a contact portion that can contact the projecting portion 41 .
- the vehicle body mounting member 100 does not have to have a contact portion that can come into contact with the projecting portion 41 .
- FIG. 17 illustrates the insert part 24 of the lens housing 23.
- FIG. The hatched part in FIG. 17 is the insert part 24 .
- the fixed portion 24A is provided on the side surface of the lens housing 23 of the optical unit 20, and the spring member 60 is screwed to the fixed portion 24A.
- the spring member 60 since the spring member 60 has the vibrating portion 62, the screw that fastens the spring member 60 to the optical unit 20 may become loose. Therefore, the screws that fix the optical unit 20 and the spring member 60 need to be tightened with a high torque.
- the lens housing 23 in order to reduce the weight of the main body 3 of the measuring device 1, there is also a demand to configure the lens housing 23 with lightweight resin or aluminum.
- the fixing portion 24A (screw hole) of the lens housing 23 is made of resin or aluminum, the strength of the resin or aluminum is relatively weak, so it becomes impossible to fasten the screw to the fixing portion 24A (screw hole) with high torque (or if the screw is fastened to the fixing portion 24A (screw hole) with high torque, the fixing portion 24A may be damaged).
- the lens housing 23 is constructed by insert molding.
- the main body of the lens housing 23 (the portion not hatched in FIG. 17) is made of resin here.
- the main body made of resin and the insert part 24 made of metal are integrated by insert molding.
- the material of the main body of the lens housing 23 is not limited to resin, and other materials (for example, aluminum) may be used.
- the insert part 24 is made of metal having a higher strength than resin or aluminum, and is made of stainless steel (SUS) here.
- the insert part 24 is not limited to stainless steel (SUS) as long as it has a higher strength than the material forming the main body of the lens housing 23 .
- a fixing portion 24A is formed in the insert part 24.
- the fixing portion 24A screw hole
- the optical unit 20 has a pair of insert parts 24.
- a pair of insert parts 24 are arranged on the left and right side surfaces of the optical unit 20 (lens housing 23), respectively.
- a lens group of the optical unit 20 is arranged between the pair of insert parts 24 .
- a pair of insert parts 24 are configured to have the same shape.
- the manufacturing cost can be suppressed by commonizing the insert parts 24 for the left and right.
- the insert parts 24 are configured to have vertically symmetrical shapes.
- the pair of insert parts 24 are arranged at the same height as the optical axis of the optical unit 20 so as to sandwich the optical axis of the optical unit 20 (see also FIG. 15). Since the pair of insert parts 24 are arranged at the same height as the optical axis of the optical unit 20 , the fixing portion 61 of the spring member 60 fixed to the insert parts 24 can be easily arranged in alignment with the center of gravity of the optical unit 20 . Also, since the pair of insert parts 24 are arranged at the same height as the optical axis of the optical unit 20 , the holder 40 can easily hold the vicinity of the center of gravity of the optical unit 20 via the spring member 60 .
- the insert part 24 has an alignment pin 24B.
- the alignment pin 24B is a part for aligning the spring member 60 and the holder 40 .
- damage to the alignment pin 24B can be suppressed, and highly accurate alignment becomes possible.
- the fixing portion 24A and the alignment pin 24B in the same insert component 24 the spring member 60 can be fixed to the optical unit 20 while the optical unit 20 and the spring member 60 are aligned with high accuracy.
- the positioning pin 24B is inserted into both the positioning hole 61C of the spring member 60 and the positioning hole 46 of the holder 40, the spring member 60 and the holder 40 can be positioned with respect to the optical unit 20, whereby the holder 40 can be fixed to the spring member 60 while the spring member 60 and the holder 40 are positioned.
- the insert part 24 has two alignment pins 24B.
- the two alignment pins 24B are spaced apart in the front-rear direction.
- a fixing portion 24A (screw hole) is formed between the two alignment pins 24B. That is, the two alignment pins 24B are arranged outside in the front-rear direction with respect to the fixed portion 24A. Thereby, the interval between the two alignment pins 24B can be widened, and the alignment accuracy can be improved.
- the fixing portion 61 of the spring member 60 is formed with two alignment holes 61C (see FIG. 13). The two alignment holes 61C are spaced apart in the front-rear direction.
- a first hole 61A and a second hole 61B are formed in the fixing portion 61 between the two alignment holes 61C.
- the two alignment holes 61C are arranged outside in the front-rear direction with respect to the first hole 61A and the second hole 61B. Thereby, the interval between the two alignment holes 61C can be widened, and the alignment accuracy can be improved. Note that the fixing portion 24A and the alignment pin 24B do not necessarily have to be formed on the insert component 24 .
- ⁇ About screws> 18 illustrates an end portion of the vibrating portion 62 of the spring member 60.
- the vibrating portion 62 of the spring member 60 (specifically, the rear end of the first bent portion 62A) is connected to the sensor unit 10 via a hinge member 96.
- the vibrating portion 62 of the spring member 60 (specifically, the rear end of the second bent portion 62B) is connected to the vibrating member 65 via the hinge member 96.
- the hinge member 96 is a member that connects the spring member 60 and the sensor unit 10 (or the vibration member 65).
- the hinge member 96 is an L-shaped member.
- the hinge member 96 is configured by a bent metal plate.
- the spring member 60 and the sensor unit 10 (or the vibration member 65) are connected via a hinge member 96 in order to connect the vibration portion 62 parallel to the front-rear direction and the sensor unit 10 (or the vibration member 65) perpendicular to the front-rear direction.
- the mounting screw 97 is a screw for mounting the hinge member 96 .
- One end of the hinge member 96 is screwed to the vibrating portion 62 of the spring member 60 with a mounting screw 97 .
- the other end of the hinge member 96 is screwed to the sensor unit 10 (or the vibration member 65 ) by another mounting screw 97 .
- the attachment screw 97 needs to have a relatively small diameter in order to fix the hinge member 96 to the tip of such a thin vibrating portion 62. Also, since the hinge member 96 is arranged where other parts are densely packed, the mounting screw 97 needs to be small. On the other hand, since the hinge member 96 is attached to a vibrating member, the attachment screw 97 must be tightened with a predetermined relatively high torque. In other words, although the mounting screw 97 has a small diameter and a small size, it must be fastened with a predetermined relatively high torque. Therefore, in this embodiment, the mounting screw 97 is automatically tightened using a screw tightening machine instead of being tightened by the operator.
- 19A and 19B illustrate how the mounting screws 97 are attached.
- the mounting screw 97 has a rod tip 97B.
- the mounting screw 97 is a screw with a rod end.
- the rod tip 97B is a cylindrical protrusion that is thinner than the diameter of the threaded portion.
- the rod tip 97B is provided at the end (tip) of the mounting screw 97 opposite to the head 97A.
- a through hole 96A for inserting a mounting screw 97 is formed at the end of the hinge member 96 .
- the opening of the through hole 96A is chamfered.
- the opening of the through hole 96A is subjected to so-called C-chamfering.
- the attachment screw 97 has a rod tip 97B, so that the rod tip 97B can be guided to the opening (C surface) of the through hole 96A.
- the vibrating portion 62 of the spring member 60 and the sensor unit 10 (or the vibrating member 65) may be fastened with the mounting screws 97 without the hinge member 96 interposed therebetween. Even in this case, the attachment screw 97 can be automatically tightened by using a screw tightening machine because the attachment screw 97 has a rod tip 97B.
- the head 97A of the mounting screw 97 is desirably smaller than the width of the hinge member 96. In other words, it is desirable that the diameter of the head 97A of the mounting screw 97 is smaller than the vertical dimension of the hinge member 96 . As a result, the head 97A of the mounting screw 97 can be prevented from protruding from the hinge member 96. As shown in FIG. Since the hinge member 96 is arranged where other parts are densely packed, it is effective that the head portion 97A of the mounting screw 97 does not protrude from the hinge member 96. FIG.
- the measuring device 1 has the sensor unit 10, the optical unit 20, the spring member 60, and the holder 40.
- the sensor unit 10 has a light emitting element 11 that emits light and a light receiving element 12 that receives reflected light.
- the optical unit 20 irradiates an object with the light emitted from the light emitting element 11 and causes the light receiving element 12 to receive the reflected light.
- the spring member 60 has a fixing portion 61 and a vibrating portion 62. The fixing portion 61 is attached to the optical unit 20 and the sensor unit 10 is attached to the vibrating portion 62, thereby movably holding the sensor unit 10 with respect to the optical unit 20.
- the holder 40 is attached to the fixed portion 61 of the spring member 60 and holds the sensor unit 10 and the optical unit 20 so as to be relatively movable. Since the fixed portion 61 of the spring member 60 is a portion that is less likely to vibrate, the vibration of the holder 40 can be suppressed by attaching the holder 40 to the fixed portion 61 of the spring member 60 .
- the measuring device 1 also has a vehicle body mounting member 100 and a housing 30 . Since the housing 30 accommodates the sensor unit 10 and the optical unit 20 , the holder 40 holding the sensor unit 10 and the optical unit 20 is also accommodated in the housing 30 . However, if the vehicle body mounting member 100 holds the housing 30, the vibration of the housing 30 may be transmitted to the vehicle body. Therefore, in this embodiment, the holder 40 is provided with the projecting portion 41 , and the vehicle body mounting member 100 holds the projecting portion 41 projecting out of the housing 30 through the gap of the housing 30 . As a result, transmission of vibration to the vehicle body can be suppressed.
- the measuring device 1 also has a gasket 35 that closes the gap between the housing 30 and the projecting portion 41 of the holder 40 .
- a gasket 35 that closes the gap between the housing 30 and the projecting portion 41 of the holder 40 .
- the measuring device 1 has a drive unit 70 that moves the sensor unit 10 with respect to the optical unit 20 , and the stator of the drive unit 70 is fixed to the housing 30 .
- the housing 30 is a member that vibrates more easily than the holder 40, so the structure in which the vehicle body mounting member 100 holds the projecting portion 41 of the holder 40 is particularly advantageous.
- the vehicle body mounting member 100 described above sandwiches the projecting portion 41 via the damper member 130 . As a result, it is possible to suppress transmission of the vibration of the main body portion 3 (especially vertical vibration) to the vehicle body.
- a gap S is provided in the horizontal direction (perpendicular to the direction in which the vehicle body mounting member 100 clamps the projecting portion 41) between the vehicle body mounting member 100 and the damper member 130 (see FIG. 15). As a result, it is possible to suppress transmission of the vibration of the main body 3 (especially horizontal vibration) to the vehicle body.
- the vehicle body mounting member 100 has a contact portion 113C that can come into contact with the projecting portion 41. Thereby, the maximum amount of displacement of the holder 40 can be restricted.
- the optical unit 20 has an insert part 24 that is insert-molded, and the fixing part 61 of the spring member 60 is screwed to the insert part 24 . Thereby, the optical unit 20 and the spring member 60 can be firmly fixed.
- the optical unit 20 has a pair of insert parts 24 of the same shape, and the pair of insert parts 24 are arranged at the same height as the optical axis of the optical unit 20 so as to sandwich the optical axis of the optical unit 20 .
- the manufacturing cost can be suppressed.
- the insert part 24 has an alignment pin 24B, and the fixing portion 61 of the spring member 60 is formed with an alignment hole 61C.
- a fixing portion 61 of the spring member 60 is formed with a first hole 61A for screwing the spring member 60 to the optical unit 20 and a second hole 61B for attaching the holder 40 to the spring member 60 .
- a first hole 61A and a second hole 61B are formed inside the two positioning holes 61C. Thereby, the interval between the two alignment holes 61C can be widened, and the alignment accuracy can be improved.
- a mounting screw 97 for mounting the vibrating portion 62 of the spring member 60 and the sensor unit 10 has a rod tip 97B. This makes it easier to attach the vibrating portion 62 of the spring member 60 and the sensor unit 10 using a screw tightener.
- the vibrating portion 62 of the spring member 60 and the sensor unit 10 are fixed via the hinge member 96, and the head portion 97A of the mounting screw 97 is smaller than the width of the hinge member 96. As a result, the head 97A of the mounting screw 97 can be prevented from protruding from the hinge member 96. As shown in FIG.
- ⁇ About car body mounting parts> 24A and 24B illustrate a comparative car body mounting member 100'.
- the vehicle body mounting member 100' holds the left and right sides of the main body 3 (specifically, the projecting portions 41 of the holder 40 projecting from the left and right side surfaces of the main body 3).
- the vehicle body mounting member 100 ′ of the comparative example has a connecting member 120 ′ instead of the pair of second mounting members 120 .
- the first mounting member 110 and the connecting member 120 ′ are fastened with screws, so that the body portion 3 (more specifically, the projecting portion 41 of the holder 40) is sandwiched between the first mounting member 110 and the connecting member 120 ′.
- a pair of first mounting members 110 are connected by a connecting member 120'.
- the pair of first mounting members 110 are fixed to the connecting member 120', the pair of first mounting members 110 are integrally combined via the connecting member 120'. That is, in the comparative example, the vehicle body mounting members 100' that hold the main body portion 3 respectively have a structure in which the right and left sides are not separated. Since the connecting member 120' has a shape that straddles the body portion 3 from side to side, the connecting member 120' is a relatively large member. In addition, since the connecting member 120 ′ needs to straddle the main body 3 in the left and right directions, the dimension of the measuring device 1 in the vertical direction becomes large.
- the vehicle body mounting member 100' has vehicle body mounting portions 111 on each of the left and right sides, and the measuring device 1 is mounted on the vehicle body by mounting the vehicle body mounting portions 111 (mounting holes) at predetermined mounting positions (not shown) on the vehicle body. Therefore, the left and right vehicle body mounting portions 111 must be arranged at positions and intervals suitable for predetermined mounting positions on the vehicle body.
- the connecting member 120' must be manufactured with high precision in order to set the left and right vehicle body mounting parts 111 at predetermined positions and intervals.
- the connecting member 120' is a relatively large member that straddles the body portion 3 from side to side, it is difficult to manufacture the connecting member 120' with high precision (or the manufacturing cost increases). Further, if the connecting member 120 ′ cannot be manufactured with high precision, it becomes difficult to set the left and right vehicle body mounting portions 111 at predetermined positions and intervals, and it becomes difficult to form the vehicle body mounting portions 111 (mounting holes) at predetermined mounting positions (not shown) on the vehicle body.
- the measuring device 1 of this embodiment has a pair of vehicle body mounting members 100 .
- the pair of vehicle body mounting members 100 are not connected and separated from each other.
- the pair of vehicle body mounting members 100 of this embodiment hold the left and right sides of the main body 3 independently. Therefore, in the present embodiment, since there is no member (for example, the connecting member 120 ′ of the comparative example) that straddles the main body 3 to the left and right, the size of the vehicle body mounting member 100 can be reduced, and the size of the measuring device 1 can be reduced.
- the pair of vehicle body mounting members 100 are separated from each other, the left and right vehicle body mounting portions 111 can be adjusted to a predetermined positional relationship. Adjustment of the positional relationship between the left and right vehicle body mounting portions 111 will be described later.
- FIG. 20 illustrates jig 200 .
- FIG. 21 illustrates how the vehicle body mounting member 100 is set on the jig 200 .
- FIG. 22 illustrates the positional relationship of members set on the jig 200.
- the body 201 of the jig 200 is indicated by dotted lines.
- Eight parts (positioning part 202 and contact part 203) of jig 200 in FIG. 20 are integrally formed by main body 201 (see dotted line) and are arranged in a predetermined positional relationship.
- FIGS. 20 to 22 show respective directions according to the body portion 3 to be set. The body portion 3 is set upside down on the jig 200 .
- the jig 200 is a member for adjusting the position of the pair of vehicle body mounting members 100 .
- the jig 200 is used to hold the body portion 3 between the pair of vehicle body mounting members 100 when the measuring device 1 is manufactured.
- the jig 200 has a plurality of positioning parts 202.
- the positioning portion 202 is a portion that positions the first mounting member 110 .
- a plurality of positioning portions 202 are arranged in a predetermined positional relationship on the main body 201 of the jig 200 so as to fit predetermined mounting positions (not shown) on the vehicle body.
- the positioning portion 202 is composed of a plurality of (three in this embodiment) positioning pins 202A and positioning grooves 202B.
- the first mounting member 110 is formed with a mounting hole (vehicle mounting portion 111) used for mounting to the vehicle body.
- the positioning pin 202A is a portion that is inserted into the mounting hole of the first mounting member 110 (vehicle mounting portion 111).
- the positioning pin 202A is a pin along the vertical direction.
- the positioning groove 202B is a groove-like portion for sandwiching the end portion of the first mounting member 110 from the horizontal direction (here, left and right direction).
- the positioning groove 202B is a part for suppressing rotation of the first mounting member 110 with respect to the jig 200. As shown in FIG.
- the positioning portion 202 is not limited to a pin-like shape.
- the body portion 3 a pair of vehicle body mounting members 100, and the jig 200 are prepared. After the second mounting member 120 and the main body portion 3 (and the damper member 130) are set in order on the jig 200, the positional relationship between the pair of vehicle body mounting members 100 is adjusted by inserting the positioning pin 202A of the jig 200 into the mounting hole (vehicle mounting portion 111) of the first mounting member 110 of the vehicle body mounting member 100.
- the first mounting member 110 and the second mounting member 120 are fastened with a screw (not shown), so that the projecting portion 41 of the main body portion 3 is sandwiched between the first mounting member 110 and the second mounting member 120.
- the left and right sides of the body portion 3 can be held by the pair of vehicle body mounting members 100, respectively.
- the jig 200 of this embodiment has a contact portion 203 that contacts the main body portion 3 (specifically, the projecting portion 41).
- FIG. 23 illustrates how the contact portion 203 and the projecting portion 41 are brought into contact with each other. Circle marks in FIG. 23 exemplify portions where the contact portion 203 and the projecting portion 41 contact each other.
- the projecting portion 41 of the main body 3 is brought into contact with the contact portion 203 of the jig 200.
- the projecting portion 41 is aligned with the jig 200 in the horizontal direction (perpendicular to the vertical direction), and the body portion 3 is aligned with the jig 200 .
- the body portion 3 can be aligned with the vehicle body mounting member 100 via the jig 200 by bringing the contact portion 203 into contact with the projecting portion 41.
- the measuring device 1 When the measuring device 1 is assembled using the jig 200, with the positioning pin 202A of the jig 200 inserted into the mounting hole (vehicle mounting portion 111) of the first mounting member 110 (that is, with the vehicle body mounting member 100 aligned with the jig 200), and with the contact portion 203 of the jig 200 in contact with the projecting portion 41 (that is, with the body portion 3 aligned with the jig 200), By fastening the first mounting member 110 and the second mounting member 120 with screws (not shown), the projecting portion 41 of the main body portion 3 is sandwiched between the first mounting member 110 and the second mounting member 120 . As a result, the measuring device 1 can be assembled (the measuring device 1 can be manufactured) in a state in which the position of the body portion 3 is aligned with the vehicle body mounting member 100 .
- the damper member 130 When the second mounting member 120, the body portion 3 and the first mounting member 110 are sequentially set on the jig 200, it is desirable to bond the damper member 130 to the first mounting member 110 and the second mounting member 120 in advance. As a result, the projecting portion 41 of the main body portion 3 can be sandwiched between the first mounting member 110 and the second mounting member 120 with the gap S shown in FIG. 15 set to a predetermined distance. Further, by bonding the damper member 130 to the first mounting member 110 and the second mounting member 120 in advance, it is easy to sandwich the projecting portion 41 between the first mounting member 110 and the second mounting member 120 via the damper member 130. However, the damper member 130 does not have to be adhered to the first mounting member 110 or the second mounting member 120 .
- the portion where the projecting portion 41 contacts the contact portion 203 of the jig 200 is common to the portion where the contact portion 113C of the first mounting member 110 contacts. This makes it possible to simplify the shape of the protruding portion 41 compared to the case where the portion that contacts the contact portion 203 of the jig 200 and the portion that contacts the contact portion 113C of the first mounting member 110 are separated.
- the measuring device 1 has the main body portion 3 and the pair of vehicle body mounting members 100 .
- the main body irradiates the object with light and receives the reflected light.
- the vehicle body mounting member 100 is a member that holds both left and right sides (both sides in the width direction) of the body section 3 in order to mount the body section 3 to the vehicle body.
- the vehicle body mounting member 100' is integrally configured to straddle the left and right sides of the main body portion 3 as in the comparative example (see FIG. 24A)
- the measuring device 1 may become large.
- the pair of vehicle body mounting members 100 independently hold the left and right sides of the main body 3 (both sides of the main body 3 in the width direction).
- the structure in which the pair of vehicle body mounting members 100 are separated left and right makes it possible to reduce the size of the vehicle body mounting members 100 and the size of the measuring device 1 as compared with the comparative example.
- the main body 3 has a sensor unit 10 , an optical unit 20 , a holder 40 that holds the sensor unit 10 and the optical unit 20 so as to be relatively movable, and a housing 30 .
- the housing 30 accommodates the sensor unit 10 and the optical unit 20
- the holder 40 holding the sensor unit 10 and the optical unit 20 is also accommodated in the housing 30 .
- the vehicle body mounting member 100 holds the housing 30, the vibration of the housing 30 may be transmitted to the vehicle body. Therefore, in this embodiment, the holder 40 is provided with the projecting portion 41 , and the vehicle body mounting member 100 holds the projecting portion 41 projecting out of the housing 30 through the gap of the housing 30 . As a result, transmission of vibration to the vehicle body can be suppressed.
- the vehicle body mounting member 100 described above sandwiches the projecting portion 41 via the damper member 130 . As a result, it is possible to suppress transmission of the vibration of the main body portion 3 (especially vertical vibration) to the vehicle body.
- a gap S is provided in the horizontal direction (perpendicular to the direction in which the vehicle body mounting member 100 clamps the projecting portion 41) between the vehicle body mounting member 100 and the damper member 130 (see FIG. 15). As a result, it is possible to suppress transmission of the vibration of the main body 3 (especially horizontal vibration) to the vehicle body.
- the vehicle body mounting member 100 has a contact portion 113C that can come into contact with the projecting portion 41. Thereby, the maximum amount of displacement of the holder 40 can be restricted.
- a manufacturing method since the body portion 3 can be held using a pair of vehicle body mounting members 100 separated left and right, it is possible to reduce the size of the vehicle body mounting members 100 and the size of the measuring device 1. Can be achieved.
- the jig 200 is used to adjust the positional relationship between the pair of vehicle body mounting members 100 .
- the process of adjusting the positional relationship between the pair of vehicle body mounting members 100 is facilitated.
- the process of holding the left and right sides (both sides in the width direction) of the main body 3 to the pair of vehicle body mounting members 100 is facilitated while the positional relationship between the pair of vehicle body mounting members 100 is adjusted.
- the positional relationship between the pair of vehicle body mounting members 100 may be adjusted using a jig other than the jig 200 described above. Alternatively, the positional relationship between the pair of vehicle body mounting members 100 may be adjusted without using a jig.
- the jig 200 has positioning pins 202A, and in the assembly method (manufacturing method) of the measuring device 1, the positional relationship between the pair of vehicle body mounting members 100 is adjusted by inserting the positioning pins 202A into the mounting holes (vehicle mounting portions 111) of the vehicle body mounting members 100.
- the mounting holes (vehicle mounting portions 111) of the pair of vehicle mounting members 100 can be adjusted to a predetermined positional relationship, so that the vehicle mounting portions 111 of the completed measuring device 1 can be arranged at positions and intervals suitable for the predetermined mounting positions of the vehicle body.
- the jig 200 has a contact portion 203, and in the assembly method (manufacturing method) of the measuring device 1, the body portion 3 is brought into contact with the contact portion 203 of the jig 200 to align the body portion 3 with respect to the vehicle body mounting member 100.
- the measuring device 1 can be assembled (the measuring device 1 can be manufactured) in a state in which the position of the body portion 3 is aligned with the vehicle body mounting member 100 .
- the present disclosure is not limited to the above embodiments, and includes various modifications.
- the above-described embodiment describes the configuration in detail in order to explain the present disclosure in an easy-to-understand manner, and is not necessarily limited to those having all the described configurations.
- Japanese Patent Application No. 2022-005809 filed on January 18, 2022
- Japanese Patent Application Japanese Patent Application No. 2022-005810 filed on January 18, 2022
- Japanese patent application Japanese Patent Application No. 2022-005811 filed on January 18, 2022
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Abstract
Description
また、上記第三の目的を達成するための本開示の別の一形態は、光を対象物に照射するとともに反射光を受光する本体部と、前記本体部を車体に取り付ける一対の車体取付部材を用意する工程と、一対の前記車体取付部材の位置関係を調整する工程と、一対の前記車体取付部材の位置関係を調整した状態で、前記本体部の幅方向の両側を一対の前記車体取付部材にそれぞれ保持させる工程と、を有する測定装置の製造方法である。
図1Aは、測定装置1の斜視図である。図1Bは、本体部3から車体取付部材100を外した状態の測定装置1の斜視図である。図2は、本体部3の概略図である。
なお、測定装置1から見て測定対象の側(Z方向プラス側)を「前」と呼び、その逆側(Z方向マイナス側)を「後」と呼ぶことがある。また、後から前を見たときの右側を「右」と呼び、左側を「左」と呼ぶことがある。なお、左右方向のことを幅方向と呼ぶことがある。また、鉛直方向の上側(Y方向プラス側)を「上」と呼び、その逆側(Y方向マイナス側)を「下」と呼ぶことがある。
図3Bは、或るフレームにおける2次元走査を例示する。測定装置1は、1枚のフレーム(1枚の3次元画像)の測定ごとに、リサージュ曲線上の複数の点において対象物の表面までの距離(Z座標)を測定する。これにより、測定装置1は、座標の測定における解像度を向上させることができる。
図3Cは、複数チャンネルによる2次元走査を例示する。図3Cに例示されるように、センサ基板13が複数の発光素子11及び複数の受光素子12を備えることによって、チャンネル毎に異なる範囲で2次元走査を行うことが可能である。これにより、X方向及びY方向の広い範囲での測定が可能になり、広いFOV(field of view)を実現できる。
固定部61は、光学ユニット20に固定される。また、固定部61は、ホルダ40にも固定される。固定部61は、前後方向に沿った帯状(板状)であり、バネ部材60の上下方向の中央に配置されている。
振動部62は、振動する。振動部62は、U字状(音叉状)である。振動部62は、分岐部621と、第1屈曲部62Aと、第2屈曲部62Bとを有する。分岐部621は、固定部61と第1屈曲部62A及び第2屈曲部62Bとの間の部位であり、固定部61から第1屈曲部62A及び第2屈曲部62Bを分岐させる部位である。第1屈曲部62A及び第2屈曲部62Bは、分岐部621から延び出た片持ち梁状の部位であり、所定の固有振動数で屈曲する部位である。第1屈曲部62Aの基端(前端)は分岐部621に連結されており、逆側の端部(後端;先端)はセンサユニット10に連結されている。第2屈曲部62Bの基端(前端)は分岐部621に連結されており、逆側の端部(後端;先端)は振動部材65に連結されている。第1屈曲部62A及び第2屈曲部62Bを含む振動部62が所定の振動モードで振動することによって、センサユニット10が、光学ユニット20に対して、X方向及びY方向にそれぞれ所定の共振周波数で振動する。
図7は、ホルダ40の上に固定された処理基板50を例示する。図8は、ホルダ40から処理基板50(及びシールド部材91)を外した様子を例示する。
シールド部材91は、導電性材料で構成された電磁波シールド(電磁シールド部材)である。ここでは、シールド部材91は、金属製の板を折り曲げて構成されているが、他の材料で構成されても良い。
伝熱シート92(図4参照)は、処理基板50の放熱を促進させるためのシート状の部材である。伝熱シート92は、処理基板50と上ハウジング32との間に配置されている。伝熱シート92は、処理基板50の熱を上ハウジング32に伝える。伝熱シート92は、処理基板50と上ハウジング32との間で挟み込まれており、厚さ方向に圧縮されている。伝熱シート92は、圧縮された部位ほど熱伝導率が高くなる。但し、伝熱シート92に圧縮応力がかかると、処理基板50に負荷がかかる。
一方、処理基板50への負荷を抑制するために、最も高さの高いチップ55に合わせて全ての凸部32Bの突出量を小さく設定することが考えられる(若しくは、上ハウジング32の内壁面を高くすることが考えられる)。但し、この場合、高さの低いチップ55と凸部32Bとの間で伝熱シート92の圧縮率が低くなり、この結果、高さの低いチップ55の放熱が不十分になることがある。
これに対し、本実施形態では、凸部32Bの突出量は、対向するチップ55の高さが低いほど大きく設定されるため、チップ55にかかる押圧力を抑制して処理基板50にかかる負荷を抑制することと、チップ55の放熱性を高めることとの両立を図ることが可能である。
上記の通り、測定装置1は、センサユニット10と、光学ユニット20と、ホルダ40と、処理基板50とを有する。センサユニット10は、光を出射する発光素子11と、反射光を受光する受光素子12とを有する。光学ユニット20は、発光素子11から出射した光を対象物に照射するとともに、反射光を受光素子12に受光させる。ホルダ40は、センサユニット10と光学ユニット20とを相対移動可能に保持する。処理基板50は、ホルダ40に固定された基板である。このような構成の測定装置1の場合、相対移動するセンサユニット10及び光学ユニット20を保持するホルダ40に処理基板50が固定されるため、処理基板50が振動することがある。そこで、本実施形態の測定装置1は、処理基板50の端部をホルダ40から支持する変形可能な支持部材80を有する。これにより、支持部材80が処理基板50の端部を支持しつつ変形することによって、支持部材80が処理基板50の振動を吸収し、処理基板50の振動を抑制することができる。
また、処理基板50の位置合わせ部53が、周縁の凹部であることが望ましい。これにより、長穴53Bが処理基板50の周縁よりも内側に配置される場合(長穴53Bが閉じた形状の場合)と比べて、処理基板50の小型化を図ることができる。
図13は、光学ユニット20、バネ部材60、ホルダ40の分解説明図である。図14Aは、ホルダ40の取り付け前の様子を例示する。図14Bは、ホルダ40の取り付け後の様子を例示する。
そこで、本実施形態では、ホルダ40は、バネ部材60の固定部61に取り付けられている。既に説明した通り、固定部61は一対の振動部62の間に配置されており、固定部61では一対の振動部62の振動が打ち消されるため、固定部61は、光学ユニット20とセンサユニット10との相対移動中でも振動しにくい部位である。このため、ホルダ40がバネ部材60の固定部61に取り付けられることによって、ホルダ40の振動を抑制することができるため、車体に振動が伝達されることを抑制できる。
そこで、本実施形態では、ハウジング30の側面の上ハウジング32と下ハウジング33との間に隙間が形成されている。また、ホルダ40は突出部41を有している。突出部41は、ハウジング30の隙間(上ハウジング32と下ハウジング33との間の隙間)に挿通されている。ホルダ40の突出部41は、ハウジング30の隙間からハウジング30の外部に突出する。これにより、車体取付部材100は、ハウジング30の外部に突出した突出部41を把持することによって、ホルダ40を保持することができる。このため、本実施形態では、車体に振動が伝達されることを抑制できる。
そこで、本実施形態では、測定装置1は、ハウジング30とホルダ40の突出部41との隙間を塞ぐガスケット35を備えている。ガスケット35がハウジング30とホルダ40の突出部41との隙間を塞ぐことによって、外部からハウジング30の内部に埃などが侵入することを抑制できる。
なお、ガスケット35は、柔軟なゴム製であることが望ましい。ハウジング30とホルダ40との間にガスケット35を介在させることによって、ハウジング30とホルダ40とが過剰に強固に固定されることを抑制できる。これにより、ハウジング30の振動がホルダ40に伝達することを抑制できるため、車体に振動が伝達されることを抑制できる。
図15に示すように、車体取付部材100は、ダンパ部材130を介してホルダ40の突出部41を挟持する。車体取付部材100は第1取付部材110及び第2取付部材120を有しているホルダ40の突出部41は第1取付部材110及び第2取付部材120の間に配置されている。第1取付部材110と突出部41との間、及び、第2取付部材120と突出部41との間に、それぞれダンパ部材130が配置されている。第1取付部材110と第2取付部材120とがネジ(不図示)によって締結されることによって、ダンパ部材130が上下方向に圧縮されるとともに、ホルダ40の突出部41がダンパ部材130を介して第1取付部材110と第2取付部材120との間に挟持される。本実施形態のように車体取付部材100がダンパ部材130を介してホルダ40の突出部41を挟持することによって、本体部3の振動(特に上下方向の振動)が車体に伝達されることを抑制できる。なお、車体取付部材100がダンパ部材130を介してホルダ40の突出部41を挟持する構造は、図15に示すような第1取付部材110及び第2取付部材120を用いたものに限れるものではなく、他の構造でも良い。
図17は、レンズハウジング23のインサート部品24を例示する。図17においてハッチングが施された部品は、インサート部品24である。
その一方、測定装置1の本体部3の軽量化のため、レンズハウジング23を軽量な樹脂やアルミニウムで構成したいという要求もある。但し、レンズハウジング23の固定部24A(ネジ穴)が樹脂やアルミニウムで構成されると、樹脂やアルミニウムの強度が比較的弱いため、高いトルクで固定部24A(ネジ穴)にネジを締結できなくなる(若しくは、高いトルクで固定部24A(ネジ穴)にネジを締結すると、固定部24Aが破損することがある)。
同様に、バネ部材60の固定部61には、2つの位置合わせ穴61Cが形成されている(図13参照)。2つの位置合わせ穴61Cは、前後方向に間隔をあけて配置されている。2つの位置合わせ穴61Cの間の固定部61には、第1穴61Aと第2穴61Bが形成されている。つまり、2つの位置合わせ穴61Cは、第1穴61A及び第2穴61Bに対して前後方向の外側に配置されている。これにより、2つの位置合わせ穴61Cの間隔を広げることができ、位置合わせ精度を高めることができる。
なお、固定部24A及び位置合わせピン24Bは、必ずしもインサート部品24に形成されていなくても良い。
図18は、バネ部材60の振動部62の端部を例示する。
ヒンジ部材96の端部には、取付ネジ97を挿通するための貫通穴96Aが形成されている。貫通穴96Aの開口部には面取りが施されている。ここでは、貫通穴96Aの開口部には、いわゆるC面取りが施されている。
上記の通り、測定装置1は、センサユニット10と、光学ユニット20と、バネ部材60と、ホルダ40とを有する。センサユニット10は、光を出射する発光素子11と、反射光を受光する受光素子12とを有する。光学ユニット20は、発光素子11から出射した光を対象物に照射するとともに、反射光を受光素子12に受光させる。バネ部材60は、固定部61と振動部62とを有し、光学ユニット20に固定部61が取り付けられ、振動部62にセンサユニット10が取り付けられることによって、光学ユニット20に対してセンサユニット10を移動可能に保持する。ホルダ40は、バネ部材60の固定部61に取り付けられ、センサユニット10と光学ユニット20とを相対移動可能に保持する。バネ部材60の固定部61は、振動しにくい部位であるため、ホルダ40がバネ部材60の固定部61に取り付けられることによって、ホルダ40の振動を抑制することができる。
図24A及び図24Bは、比較例の車体取付部材100’を例示する。
図20は、治具200を例示する。図21は、治具200に車体取付部材100をセットした様子を例示する。図22は、治具200にセットされる部材の位置関係を例示する。
図20では、治具200の本体201は、点線で示されている。図20中の治具200の8つの部位(位置決め部202及び接触部203)は、本体201(点線参照)によって一体的に構成されており、所定の位置関係に配置されている。図21及び図22では、治具200を構成する部位(位置決め部202及び接触部203)にはハッチングが施されており、治具200の本体201は図示されていない(本体201を透過させた状態で各部を示している)。また、図22では、治具200と車体取付部材100との位置関係を示すため、突出部41以外の本体部3は図示されていない。また、図20~図22には、セットされる本体部3に合わせて各方向が示されている。本体部3は上下を逆にして治具200にセットされる。
上記の通り、測定装置1は、本体部3と、一対の車体取付部材100とを有する。本体部は、光を対象物に照射するとともに反射光を受光する。車体取付部材100は、本体部3を車体に取り付けるため、本体部3の左右両側(幅方向の両側)を保持する部材である。ここで、仮に比較例(図24A参照)のように車体取付部材100’が本体部3の左右を跨ぐように一体的に構成されてしまうと、測定装置1が大型化することがある。これに対し、本実施形態では、一対の車体取付部材100が、本体部3の左右両側(本体部3の幅方向の両側)をそれぞれ独立して保持する。一対の車体取付部材100が左右に分離した構造になることによって、比較例と比べて、車体取付部材100の小型化を図ることができ、測定装置1の小型化を図ることができる。
Claims (31)
- 光を出射する発光素子と、反射光を受光する受光素子とを有するセンサユニットと、
前記発光素子から出射した光を対象物に照射するとともに、反射光を前記受光素子に受光させる光学ユニットと、
前記センサユニットと前記光学ユニットとを相対移動可能に保持するホルダと、
前記ホルダに固定された基板と、
前記基板の端部を前記ホルダから支持する変形可能な支持部材と
を有する測定装置。 - 請求項1に記載の測定装置であって、
前記基板の4つの角部のうちの3つの角部において、前記基板が前記ホルダに固定されており、
前記ホルダに固定されていない前記基板の角部において、前記基板が前記支持部材によって前記ホルダから支持されている、測定装置。 - 請求項1又は2に記載の測定装置であって、
前記支持部材は、
前記ホルダに固定する第1固定部と、
前記基板に固定する第2固定部と、
前記第1固定部と前記第2固定部とを連結しつつ変形可能な連結部と
を有する測定装置。 - 請求項1~3のいずれかに記載の測定装置であって、
前記支持部材は、位置合わせピンを有し、
前記基板は、前記位置合わせピンに合わせる位置合わせ部を有する、
測定装置。 - 請求項4に記載の測定装置であって、
前記位置合わせ部は、前記基板の周縁の凹部である、測定装置。 - 請求項1~5のいずれかに記載の測定装置であって、
前記光学ユニットの光の入出射面を露出させつつ、前記センサユニット、前記光学ユニット及び前記基板を収容するハウジングと、
前記基板と前記光学ユニットとの間に配置された電磁シールド部材と、
を更に有する測定装置。 - 請求項1~6のいずれかに記載の測定装置であって、
ハウジングと、
前記基板と前記ハウジングとの間に挟み込まれた伝熱シートと、
を更に備える測定装置。 - 請求項7に記載の測定装置であって、
前記基板は、高さの異なる複数のチップを有しており、
前記ハウジングは、前記チップに対向し、前記チップに向かって突出する複数の凸部を有しており、
前記凸部の突出量は、対向する前記チップが低いほど大きく設定されており、
前記伝熱シートは、前記チップと前記凸部との間で厚さ方向に圧縮されている、
測定装置。 - 請求項7又は8に記載の測定装置であって、
前記ハウジングは、外面に放熱フィンを有する、測定装置。 - 光を出射する発光素子と、反射光を受光する受光素子とを有するセンサユニットと、
前記発光素子から出射した光を対象物に照射するとともに、反射光を前記受光素子に受光させる光学ユニットと、
固定部と振動部とを有し、前記光学ユニットに前記固定部が取り付けられ、前記振動部に前記センサユニットが取り付けられることによって、前記光学ユニットに対して前記センサユニットを移動可能に保持するバネ部材と、
前記バネ部材の前記固定部に取り付けられ、前記センサユニットと前記光学ユニットとを相対移動可能に保持するホルダと、を有する測定装置。 - 請求項10に記載の測定装置であって、
車体に取り付けるための車体取付部材と、
前記センサユニット、前記光学ユニット及び前記バネ部材を収容するハウジングと
を更に有し、
前記ホルダは、前記ハウジングの隙間から前記ハウジングの外部に突出する突出部を有し、
前記車体取付部材は、前記突出部を保持する、
測定装置。 - 請求項11に記載の測定装置であって、
前記ハウジングと前記ホルダの前記突出部との隙間を塞ぐガスケットを更に有する、測定装置。 - 請求項11又は12に記載の測定装置であって、
前記光学ユニットに対して前記センサユニットを移動させる駆動ユニットを更に有し、
前記駆動ユニットの固定子は、前記ハウジングに固定される、
測定装置。 - 請求項11~13のいずれかに記載の測定装置であって、
前記車体取付部材は、ダンパ部材を介して前記突出部を挟持する、測定装置。 - 請求項14に記載の測定装置であって、
前記車体取付部材と前記ダンパ部材との間に、前記車体取付部材が前記突出部を挟持する方向と垂直方向に隙間が設けられている、測定装置。 - 請求項15に記載の測定装置であって、
前記車体取付部材は、前記突出部に接触可能な接触部を有する、測定装置。 - 請求項10~16のいずれかに記載の測定装置であって、
前記光学ユニットは、インサート成形されたインサート部品を有しており、
前記バネ部材の前記固定部は、前記インサート部品にネジ留めされる、
測定装置。 - 請求項17に記載の測定装置であって、
前記光学ユニットは、同じ形状の一対の前記インサート部品を有しており、
一対の前記インサート部品は、前記光学ユニットの光軸と同じ高さに、前記光学ユニットの光軸を挟むように対向配置される、測定装置。 - 請求項17又は18に記載の測定装置であって、
前記インサート部品は、位置合わせピンを有し、
前記バネ部材の前記固定部には、前記位置合わせピンに合わせる位置合わせ穴が形成されている、測定装置。 - 請求項19に記載の測定装置であって、
前記固定部には、前記光学ユニットに前記バネ部材をネジ留めするための第1穴と、前記バネ部材に前記ホルダを取り付けるための第2穴とが形成されており、
2つの前記位置合わせ穴の内側に、前記第1穴及び前記第2穴が形成されている、
測定装置。 - 請求項10~20のいずれかに記載の測定装置であって、
前記バネ部材の前記振動部と前記センサユニットとを取り付けるネジは、棒先を有する、測定装置。 - 請求項21に記載の測定装置であって、
前記バネ部材の前記振動部と前記センサユニットはヒンジ部材を介して固定されており、
前記ネジの頭部は、前記ヒンジ部材の幅よりも小さい、測定装置。 - 光を対象物に照射するとともに、反射光を受光する本体部と、
前記本体部の幅方向の両側をそれぞれ独立して保持しつつ、前記本体部を車体に取り付ける一対の車体取付部材とを備える測定装置。 - 請求項23に記載の測定装置であって、
前記本体部は、
光を出射する発光素子と、前記反射光を受光する受光素子とを有するセンサユニットと、
前記発光素子から出射した光を対象物に照射するとともに、反射光を前記受光素子に受光させる光学ユニットと、
前記センサユニットと前記光学ユニットとを相対移動可能に保持するホルダと、
前記センサユニット及び前記光学ユニットを収容するハウジングと
を有し、
前記ホルダは、前記ハウジングの隙間から前記ハウジングの外部に突出する突出部を有し、
前記車体取付部材は、前記突出部を保持する、
測定装置。 - 請求項24に記載の測定装置であって、
前記車体取付部材は、ダンパ部材を介して前記突出部を挟持する、測定装置。 - 請求項25に記載の測定装置であって、
前記車体取付部材と前記ダンパ部材との間に、前記車体取付部材が前記突出部を挟持する方向と垂直方向に隙間が設けられている、測定装置。 - 請求項26に記載の測定装置であって、
前記車体取付部材は、前記突出部に接触可能な接触部を有する、測定装置。 - 光を対象物に照射するとともに反射光を受光する本体部と、前記本体部を車体に取り付ける一対の車体取付部材を用意する工程と、
一対の前記車体取付部材の位置関係を調整する工程と、
一対の前記車体取付部材の位置関係を調整した状態で、前記本体部の幅方向の両側を一対の前記車体取付部材にそれぞれ保持させる工程とを有する測定装置の製造方法。 - 請求項28に記載の測定装置の製造方法であって、
治具を用いて、一対の前記車体取付部材の位置関係を調整する、
測定装置の製造方法。 - 請求項29に記載の測定装置の製造方法であって、
前記車体取付部材は、前記車体への取り付けに用いられる取付穴を有し、
前記治具は、位置決めピンを有し、
前記位置決めピンを前記取付穴に挿入することによって、一対の前記車体取付部材の位置関係を調整する、測定装置の製造方法。 - 請求項29又は30に記載の測定装置の製造方法であって、
前記治具は、前記本体部と接触する接触部を有し、
前記治具の前記接触部に前記本体部を接触させることによって、前記車体取付部材に対する前記本体部の位置を合わせる、測定装置の製造方法。
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| EP4468027A1 (en) | 2024-11-27 |
| EP4468027A4 (en) | 2025-04-23 |
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