JPH09196674A - Laser survey instrument - Google Patents

Abstract

(57) Abstract: A laser surveying device capable of performing an appropriate laser surveying by properly using each of these methods according to the distance of the projection surface and the direction of a reference line to be formed. SOLUTION: A light distribution lens 1 is divided into a general negative cylindrical lens from its center along a generatrix of a surface into diffusion parts 1a and 1c, respectively, and each of the diffusion parts 1 is formed.
The flat plate portion 1b having a parallel plane is sandwiched between a and 1c. The laser light transmitted through each of the diffusion parts 1a and 1c is
The reference line SL of relatively low brightness is statically formed on the wall surface 87 by being diffused in the axial direction with power. Also, the flat plate portion 1
The laser beam transmitted through b forms a relatively high-intensity spot SP at the center of the reference line SL without being diffused at all, as in the case of the conventional scanning method.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laser surveying device for projecting a reference line by a laser beam in a horizontal direction or a vertical direction with respect to a predetermined surface.

[0002]

2. Description of the Related Art Conventionally, in the field of civil engineering, construction, etc., in order to mark a horizontal line or a vertical line, a reference plane by a laser beam is formed or a reference line (trajectory) in the vertical direction or the horizontal direction is formed. A laser surveying device (so-called laser planar) that projects on a projection surface is used.

As a method of such a laser surveying device, a method of diffusing a laser beam in a fan shape through a cylindrical lens to project a line (hereinafter referred to as "line projection type") or a laser beam is emitted. A method of rotating the light projecting portion and scanning the laser light (hereinafter, referred to as "rotary scanning method") is used. The reference line projected by such a laser survey instrument is visually confirmed if the distance to the projected wall surface is short and the surroundings are relatively dark.

In the case of a rotary scanning type laser surveying instrument, the position of this reference line can be detected by using a photodetector even if the wall surface is a long distance or the surroundings are relatively bright. The photodetector is a pulse (corresponding to laser light) generated in a converted electric signal by photoelectrically converting light of a specific wavelength (wavelength of laser light) by a light receiving sensor.
This is because it is a device that detects the passage position of the laser beam trajectory by detecting

[0005]

However, in the case of the rotary scanning type, if the wall surface projecting the reference line is a flat surface, the time of the portion of the laser light scanned over the entire circumference projected on the wall surface is reduced. Since the ratio is small, most of the energy of the laser light is wasted.
Therefore, in the case of the rotary scanning type, the distance over which the reference line can be visually projected is short, and the photodetector is almost always required, which is troublesome.

On the other hand, in the case of the line projection type laser surveying instrument, since the angle range for projecting the laser light is limited, the energy of the laser light is not wasted. Therefore, with the same laser output, the reference line can be visually projected over a longer distance than in the case of the rotary scanning type, and the reference line can be projected visually even if the surroundings are slightly bright. However, since the line projection type laser surveying device cannot project the reference line in the entire circumferential direction, it cannot be used for work such as marking out the inner peripheral wall of the room. Even in the line projection type, as the distance to the projection surface increases, the brightness of the reference line decreases rapidly, making visual identification difficult. At this time, since the laser light in the case of the line projection type is direct current light, it is impossible to detect the reference line with the photodetector. Therefore, the line projection type laser surveying device cannot be used at a long distance at all.

The present invention has been made in view of the above problems, and while the reference line can be projected in the entire circumferential direction, the reference line is provided on the wall surface at a long distance as compared with the case of the simple rotary scanning type. It is an object of the present invention to provide a laser surveying device that can be projected visually and that can visually project a reference line even when the surroundings are bright.

[0008]

In order to solve the above-mentioned problems, the first aspect of the laser surveying device according to the present invention is to provide a laser light source and an emitting portion for emitting the laser light oscillated from this laser light source to the outside. In the optical path of the laser light from the laser light source to the emitting portion, arranged in a part of the cross section of the optical path, a lens having power only in one direction,
It is characterized in that it is provided with a rotating means for rotating the emitting direction of the laser light by the emitting portion within a fixed plane, and a switching means for switching the operation and stop of the rotating means (corresponding to claim 1).

In order to solve the above-mentioned problems, a second aspect of the laser surveying device according to the present invention is a laser light source, an emitting portion for emitting the laser light oscillated from this laser light source to the outside, and the laser light source as described above. An optical path separating unit that separates the optical path of the laser light to the emitting unit into a plurality of optical paths, a lens that is disposed in one of the optical paths separated by the optical path separating unit, and has a power only in one direction, and the emitting unit. The rotation means for rotating the emission direction of the laser light by the means within a fixed plane, and the switching means for switching the operation and stop of the rotation means are provided (corresponding to claim 13).

In order to solve the above-mentioned problems, a third aspect of the laser surveying instrument according to the present invention synthesizes a first laser light source, a second laser light source and laser light oscillated from each of these laser light sources. And a first emitting portion that emits light to the outside.
A lens arranged in the optical path of the laser light from the laser light source to the emitting portion, having a power only in one direction,
It is characterized in that it is provided with a rotating means for rotating the emitting direction of the laser beam by the emitting section within a fixed plane, and a switching means for switching the operation and stop of the rotating means (corresponding to claim 14).

[0011]

Embodiments of the present invention will be described below with reference to the drawings. Before giving a detailed description of each embodiment, the concept of each constituent element of the present invention will be described. (Emitting Unit) The emitting unit is a portion that emits laser light to the outside of the laser surveying device. Therefore, it may be simply a casing opening, a lens,
The window may be a transparent plane-parallel plate. Further, the emitting portion itself may be a light distribution lens. Further, the emitting portion may be formed in a tubular shape along the direction in which the emitting direction of the laser light is rotated. (Lens) The light distribution lens may be a cylindrical lens (corresponding to claim 2) or a graded index lens (corresponding to claim 3). Also,
A plurality of light distribution lenses may be arranged in a part of the optical path cross section of the laser light (corresponding to claim 8).

The direction of the power of this light distribution lens is
It may be coincident with the rotation direction of the emitting direction of the laser light by the rotating means (corresponding to claim 4) or may be orthogonal (corresponding to claim 5). If the directions are the same, the directions of the reference line and the reference plane formed by the rotating means when the emitting portion is rotating and when the emitting portion is stopped are the same,
It is possible to properly use the method of forming the reference line and the reference surface according to the distance and the brightness of the surroundings. On the other hand, if the directions intersect, the direction of the reference line / reference plane that is formed will change depending on whether the emitting unit is rotating or stopped by the rotating means.・ You can use different reference planes. When a plurality of light distribution lenses are provided,
The direction of the power of some of the light distribution lenses coincides with the direction of rotation of the laser light emission direction by the rotating means, and the direction of the power of the remaining light distribution lenses is the direction of laser light emission by the rotating means. It may be configured to be orthogonal to the rotation direction (corresponding to claim 9). According to this structure, it is possible to enjoy both the advantage in the case where the direction of the power of the light distribution lens coincides with the rotation direction and the advantage in the case where the direction is orthogonal to the rotation direction.

The light distributing lens may diffuse the laser light only to one side of the optical path of the laser light emitted without passing through the light distributing lens (corresponding to claim 6). The laser light may be diffused in the optical path of the laser light emitted without passing through the laser (corresponding to claim 7). Further, when a plurality of light distribution lenses are provided, each lens may diffuse the laser light in the opposite directions with respect to the optical path of the laser light emitted without passing through these light distribution lenses. (Corresponding to item 10).

In a portion where the light distribution lens is not arranged in the optical path cross section of the laser light, nothing may be left as it is, or a plane parallel plate made of a transparent member may be placed ( (Corresponding to claim 11). In the latter case, the light distribution lens and the plane parallel plate may be integrally formed (corresponding to claim 12). With this configuration, the light distribution lens can be easily attached. (Rotating Means) The rotating means may rotate the emitting portion itself, or in the case where the emitting portion is formed in a tubular shape along the rotation direction as described above, the optical path is provided inside thereof. May be rotated. Further, the entire laser surveying device including the laser diode may be rotated.

[0015]

First Embodiment A first embodiment of the present invention will be described below. <Structure of Embodiment> FIG. 1 is a sectional view showing the structure of a laser surveying instrument according to this embodiment. FIG. 1 shows a state in which a laser surveying device is erected in the vertical direction in order to perform laser light scanning in the horizontal direction.

As shown in FIG. 1, a laser surveying device 11
Is a substantially cylindrical main body housing 12, a light projecting device 13 housed in the main body housing 12 in a state where the rotary light projecting portion 15 is projected from an upper end surface 12b of the main body housing 12, and the light projecting device 13. It is composed of an upper housing 16 surrounding the rotary light projecting portion 15 of the device 13, and a battery case 17 provided at the bottom of the main body housing 2 for accommodating a battery for driving the light projecting device 13. [Main body housing] Main body housing 1 having a substantially cylindrical shape
A mortar-shaped sliding guide portion 19 is formed on the upper end surface 12b of the shaft 2 coaxially with the central axis thereof. This sliding guide 1
A circular sliding hole 19a is formed on the bottom surface of 9 coaxially with the central axis thereof.

A bracket 42 is formed on the inner surface of the main body housing 12, which is lateral to the sliding guide portion 19, so as to project toward the central axis thereof. Two of the brackets 42 are formed at positions offset from each other by 90 degrees about the central axis of the main body housing 12. Also,
A support protrusion 51 is formed on the outer surface of the slide guide portion 19 (the surface inside the main body housing 12) in the direction that bisects the angle formed by the two brackets 42 and the central axis.

Further, on the lower end surface of the main body housing 12,
A circular hole 12a is formed coaxially with the central axis. [Battery Case] The battery case 17 has a cylindrical shape having the same diameter as the outer diameter of the main body housing 12. A circular hole 12 formed in the lower end surface of the main body housing 12 is formed at the center of the upper end surface and the lower end surface of the battery case 17.
Circular holes 17a, 17a overlapping with a are formed. [Upper Housing] The upper housing 16 includes a window (exiting portion) 16b made of a cylindrical transparent member coaxial with the central axis of the main body housing 12, and a lid 16c made of an opaque member that closes the end surface of the window 16b. ing. A circular hole 16a in which a transparent member 36 is fitted is formed at the center of the lid 16c. [Light-projecting device] The light-projecting device 13 is composed of a rotary light-projecting unit 15 and a main body unit 20 that holds the rotary light-projecting unit 15 rotatably and coaxially via a bearing 10. A hollow laser light optical path 20b penetrating the entire main body 20 along its central axis and a laser light optical path 20a branched at a right angle from this laser light optical path are formed. Further, the rotary light projecting unit 15 is provided with the laser light optical path 2
0b and a hollow laser light optical path 15a formed coaxially with its rotation axis, and a pentaprism accommodating portion 15b communicating with the laser light optical path 15a and having openings in the end face direction and the lateral direction are formed. Has been done. (Laser emitting optical system) These laser light optical paths 20a, 2
The optical configuration of the laser emission optical system built in 0b and 15a will be described with reference to FIGS.

Laser light optical paths 20a and 2 in the main body 20
The polarization beam splitter 27 is fixed at the intersection of 0b. A laser diode 23 is fixed to an end surface of the laser light optical path 20a, and a collimator lens 24 and an anamorphic lens 1 are provided in an intermediate portion thereof.
8 is fixed. Further, the wedge prisms 29a, 29b are provided on the battery case side in the laser light optical path 20b.
Has been fixed. Further, a λ / 4 plate 28, a semipermeable membrane 28a, a front lens group 31, and a rear lens group 32 are fixed to the rotary light projecting portion side in the laser light optical path 20b. Also,
In the pentaprism accommodating portion 15b of the rotary light projecting portion 15,
The penta prism 35 and the wedge prism 34 are fixed. Further, the light distribution lens 1 is fitted in the light projecting window 33 opened to the side of the pentaprism housing portion 15b.

Laser diode 23 as a laser light source
Oscillates a laser beam that is linearly polarized within the S polarization plane (plane perpendicular to the paper surface) with respect to the polarization splitting surface 27a of the polarization beam splitter 27. The collimator lens 24 is a lens that converts the laser light emitted from the laser diode 23 into parallel light. The anamorphic lens 18 is a lens for correcting the cross-sectional shape of the laser light transmitted through the collimator lens 24 into a perfect circle.

In the polarization beam splitter 27, λ / with respect to the optical axis of the laser light L ₀ from the laser diode 23.
A polarization splitting surface 27a inclined by 45 degrees is formed on the four plate side. The polarization splitting surface 27a has a characteristic of reflecting 100% of S-polarized light and transmitting 100% of P-polarized light. Therefore, the anamorphic lens 18
The laser light transmitted through is 100% λ / 4 plate 28.
Reflected to the side.

The λ / 4 plate 28 has its optical axis centered on the optical axis and is inclined by 45 degrees with respect to the P-polarized plane (plane parallel to the paper surface) with respect to the polarization splitting surface 27a. Affixed to. Therefore, the λ / 4 plate 28
Converts the incident linearly polarized light into circularly polarized light. This λ / 4
On the side of the pentaprism of the plate 28, a semi-transparent film 28a that reflects a part of the laser light toward the polarization beam splitter 27.
Is pasted. The circularly polarized laser light reflected by the semi-permeable film 28a is re-incident on the λ / 4 plate 28,
It is converted into P-polarized light and transmitted through the polarization beam splitter 27.

The laser light L ₂ transmitted through the polarization beam splitter 27 is transmitted through the wedge prisms 29a and 29b and emitted from the lower end of the light transmitting device 3 in the direction of the extension of its axis.

On the other hand, the front lens group 31 on which the laser light transmitted through the semipermeable membrane 28a enters is a negative lens and is held in a sliding cylindrical member 30 which is inserted in the laser light optical path 20b so as to be able to advance and retract. . Further, the rear group lens 32 on which the laser light diverged by the front group lens 31 enters is a positive lens and is fixed in the laser beam optical path 20b. Therefore, the front lens group 31 and the rear lens group 32 form a beam expander that expands the beam diameter of the incident laser light. Then, by moving the front lens group 31, the formation position of the beam waist can be changed.

The pentaprism 35 on which the laser light transmitted through the rear lens group 32 is incident is fixed in the pentaprism housing portion 15b of the rotary light projecting portion 15 so as to rotate integrally with the rotary light projecting portion 15. There is. This penta prism 3
Reference numeral 5 denotes a light incident surface 35c on which the laser light is incident, and a first reflecting surface 35a which is inclined by 22.5 degrees with respect to the light incident surface 35c and on which the laser light incident from the light incident surface 35c is incident. , 45 with respect to the first reflecting surface 35a
A second reflecting surface 35b which is inclined at a time and which again reflects the laser light reflected by the first reflecting surface, and a second reflecting surface 35b which is perpendicular to the light incident surface 35c and is reflected by the second reflecting surface 35b. light emitting surface 3 that emits laser light L _3, which is
5d. Therefore, even if the pentaprism 33 is tilted in the planes of FIGS. 1 and 2, the angle between the optical axis of the laser beam L _{1 and} the optical axis of the emitted laser beam L ₃ is always 90.
Holds every time. In addition, since the reflection enhancing film is formed on the second reflecting surface 35b by aluminum vapor deposition,
The laser light is internally reflected at 100% on the second reflecting surface 35b. On the other hand, the semi-transparent film 14 having a reflectance of 70 to 80% is formed on the first reflecting surface 35a. Therefore, 20 to 30% of the laser light L ₄ is
The light is transmitted through the first reflecting surface 35a, passes through the wedge prism 34, and is emitted from the upper end of the light projecting device 13 in the extension direction of its axis.

On the other hand, the light exit surface 35 of the penta prism 35
The laser light L ₃ emitted from d enters the light distribution lens 1. This light distribution lens 1 has a shape as shown in FIG. 3, and is a kind of negative cylindrical lens having power only in the axial direction (horizontal direction) orthogonal to the paper surface of FIGS. 1 and 2. That is, as shown in FIG. 4, which is a top view seen from the direction A in FIG. 2, the light distributing lens 1 has a shape in which a general negative cylindrical lens is divided into two along the generatrix and is separated. Parts 1a and 1c and their respective diffusion parts 1
It has a shape in which a parallel flat plate portion 1b sandwiched between a and 1c is integrally formed.

The laser light L ₃ emitted from the pentaprism 35 also enters the diffusion portions 1a and 1c together with the flat plate portion 1b of the light distribution lens 1. Of these, the laser light transmitted through the flat plate portion 1b forms a spot SP of relatively high brightness on the wall surface 87 without being diffused at all, as in the case of the conventional scanning method. Further, the laser light transmitted through each of the diffusion portions 1a and 1c as the light distribution lens is diffused in the axial direction having the power and relatively low on the wall surface 87, as in the case of the system using the conventional cylindrical lens. The luminance reference line SL is statically formed. That is, the diffusion unit 1a is shown in FIG.
The laser light is diffused above the spot SP,
The upper half of the reference line SL is formed. In addition, the diffusion unit 1b is
In FIG. 4, the laser light is diffused below the spot SP to form the lower half of the reference line SL. (Tilt Mechanism) Next, returning to FIG. 1, a configuration for allowing the light projecting device 13 to tilt in any direction within the main body housing 12 will be described.

On the upper portion of the main body portion 20, the sliding guide portion 1
A bulged portion 21 retained inside 9 is formed. The bulging portion 21 is composed of a cylindrical portion having an outer diameter larger than the inner diameter of the sliding hole 19a and a hemispherical portion connecting the large diameter cylindrical portion and another portion. Therefore, the bulging portion 21 is held without coming off from the sliding hole 19a in a state where the hemispherical portion is in contact with the sliding hole 19a. Since the holding of the light projecting device 13 to the main body housing 12 is regarded only by the contact of this portion, by rotating the hemispherical surface portion of the bulging portion 21 in the sliding hole 19a, the entire light projecting device 13 is It can be tilted in all directions around the center of the hemisphere.

A mechanical configuration for performing this tilting will be described. First, a tension spring 52 is stretched between a portion of the main body portion 20 below the protruding portion 21 and the support protrusion 51. Therefore, a rotational torque is applied to the bulging portion 21 by the tension spring 52.

Further, the sliding guide portion 19 is formed with two slits 19b in the same direction as the brackets 42 provided orthogonally to each other when viewed from the central axis thereof. A drive arm 37 is formed at the uppermost portion of the bulging portion 21 so as to project in the same direction as each slit 19b when viewed from the center axis thereof. Each drive arm 37 is inclined toward the lower side and enters the main body housing through the corresponding slit 19b. A pin 40 is formed at the tip of each of the drive arms 37 so as to face the spherical center of the bulging portion 21.

On the other hand, an adjusting screw 45 is provided between each bracket 42 and the upper end surface 12b of the main body housing 12.
Is rotatably suspended in parallel with the central axis of the main body housing 12. Each adjustment screw 45 is a pinion 4
It is rotated by the level adjusting motors 44 and 76 fixed on the brackets 42 via the gear 9 and the transmission gear 50. An adjusting nut 46 is screwed into each adjusting screw 45. On the outer surface of the adjusting nut 46, an operating pin 47 that comes into contact with the pin 40 is formed so as to project, and the rotation of the bulging portion 21 is restricted.

Since the rotation of each adjusting nut 46 with respect to the main body housing 12 is restricted by the rotation restricting means (not shown), when the adjusting screw 45 is rotationally driven by each level adjusting motor 44, 76, Go up and down. Therefore, the pin 40 elastically attached to each operating pin 47
Moves up and down following this up-and-down movement, so that the bulging portion 21 rotates in either direction according to the up-and-down direction.

The microcomputer 82 detects the tilt of the light projecting device 13 in the Y direction (direction orthogonal to the paper surface) and the level detecting sensor 72 in the Y direction, and the tilt of the light projecting device 13 in the X direction (paper surface direction). Rotation control of the X-direction level adjustment motor 44 and the Y-direction level adjustment motor 76 so that the tilt detection signal from the X-direction level detection sensor 73 is received and the axis of the light projecting device 13 faces the vertical direction. I do. (Rotation Mechanism) Next, a mechanism as a rotation means for rotating the rotary light projecting portion 15 with respect to the main body portion 20 will be described.

On the outer peripheral surface of the rotary light projecting portion 15 rotatably connected to the main body portion 20 via the bearing 10,
The gear 69 is fixed. On the other hand, a bracket 65 protruding outward is provided on the upper end surface of the bulging portion 21 of the main body portion 20. A light projecting portion rotating motor 66 is fixed to the bracket 65, and a pinion 67 attached to a rotation shaft of the light projecting portion rotating motor 66 meshes with a gear 69 of the rotary light projecting portion 15. The light emitting unit rotation motor 66 is stopped or rotated by a microcomputer 82. That is, when the motor 66 for rotating the light projecting portion is stopped, the optical axis of the laser light L ₃ emitted from the light distribution lens 1 is stopped while being directed in a certain direction. On the other hand, when the light-projection-part rotation motor 66 is rotated, the emission direction of the laser light L ₃ emitted from the light distribution lens 1 rotates about the rotation axis of the rotary light-projection part 15. A reference plane is formed that is orthogonal to the axis. (Focusing Mechanism) Next, a configuration for driving the front lens group 31 forward and backward in the optical axis direction will be described.

A slit 63 penetrating the inner and outer surfaces of the sliding cylindrical member 30 of the light projecting device 13 is formed in the vicinity of the moving range of the sliding cylindrical member 30. A bracket 53 and a bracket 55 are formed on the outer surface of the main body 20 so as to sandwich the slit 63 from above and below. A focusing screw 56 is rotatably provided between the brackets 53 and 55 in parallel with the central axis of the main body 20. A focusing nut 57 is attached to the focusing screw 56.
Is screwed. The focusing nut 57 is fixed at the other end of a transmission link 62 that passes through the slit 63 and has one end fixed to the sliding cylindrical member 30.

The focusing screw 56 is rotationally driven by a focusing motor 59 fixed on the bracket 53 via a pinion 60 and a transmission gear 61. The rotation of the focusing motor 59 is controlled by the microcomputer 82. That is, by appropriately controlling the rotation of the focusing motor 59 according to the distance to the wall surface 87, the front lens group 31 can be moved back and forth to a position where a beam waist can be formed on the wall surface 87. Of. [Circuit Configuration] Next, the connection relationship of circuit components such as the microcomputer 82 will be described.

As shown in FIG.
Direction level detection sensor 72, X direction level detection sensor 73, projection unit rotation motor 66, focusing motor 59,
The level adjustment motor 44 in the X direction and the level adjustment motor 76 in the Y direction are connected. The laser diode 23 is connected to the microcomputer 82 via a laser diode drive circuit 95.

Further, the microcomputer 82 is connected with a main switch 96, a light emission instruction operating section 97, a rotation instruction operating section 98, a distance input section 99, and a rotational position adjusting button 100. These are switches provided on the outer surface of the main body housing 12. Of these, the main switch 96
This is a switch for turning on the power of the microcomputer 82 to activate it. By turning on the main switch 96, the tilt detection signals from the Y-direction level detection sensor 72 and the X-direction level detection sensor 73 are read into the microcomputer 82, and the X-direction level adjustment motor 44 is accordingly read.
The Y-direction level adjusting motor 76 is drive-controlled.

Further, the light emission instruction operating section 97 is a switch for inputting whether or not the laser diode drive circuit 95 drives the laser diode 23. Further, the rotation instruction operating unit 96 as the switching unit includes the rotation light projecting unit 15
Is a switch for inputting whether or not to rotate, that is, whether or not to rotate the light projecting unit rotation motor 66.

The distance input section 99 is a switch for inputting the distance from the laser surveying device 11 to the wall surface 87. When the distance is input by the distance input unit 99, the focusing motor 59 is driven by the amount of moving the front lens group 31 to the position corresponding to the distance.

When the rotation position adjusting button 100 is pressed while the light projecting portion rotation motor 66 is stopped, the light projecting portion rotation motor 66 is rotationally driven by a specific minute amount. The amount by which the light projecting section rotation motor 66 is rotationally driven each time the rotational position adjusting button 100 is pressed is such that the rotation angle of the rotary light projecting section 15 rotated thereby is diffused by the light distribution lens 1. The laser light is adjusted to be narrower than the diffusion angle of the laser light. <Operation of Embodiment> The operation of the laser surveying instrument 11 according to this embodiment having the above-described configuration will be described. First, as shown in FIG. 6, the laser surveying instrument 11 is erected by the tripod 85 toward the wall surface 87 on which the reference line SL is to be projected. Then, the height of the window 16b of the laser surveying instrument 11 is adjusted to the same height as the height at which the reference line SL should be formed by appropriately adjusting the length of the tripod 85.

Next, the main switch 96 is turned on to supply power to the microcomputer 82. Then, the microcomputer 82
The tilt detection signals from the Y-direction level detection sensor 72 and the X-direction level detection sensor 73 are read, and the X-direction level adjustment motor 44 and the Y-direction level adjustment motor 76 are appropriately driven according to the inclination detection signals, and the light projecting device 15 The tilt is adjusted so that the axis of (the rotation axis of the rotary light projecting unit 15) faces the vertical direction.

Next, the light emission instruction operating section 97 is turned on to cause the laser diode 23 to oscillate. Then, the laser beam L ₀ oscillated from the laser diode 23, in the laser emitting optical system, the laser beam L ₂ emitted downward in the vertical direction along the axis of the light projecting device 13, the light projecting device 13 axis ( A laser beam L ₄ emitted vertically upward along the rotation axis of the rotary light projecting section 15 and a laser beam emitted in a direction orthogonal to the axis of the light projecting device 13 (the rotation axis of the rotary light projecting section 15). It is split into light L ₃ .

The laser beam L ₂ is applied to the circular hole 12a of the main body housing 12 and the circular holes 17a, 1 of the battery case 17.
A spot is formed on the floor (ground) through 7a. The laser light L ₄ is emitted from the transparent member 3 of the upper housing 16.
A spot is formed on the ceiling or the like through 6. Therefore,
Using these spots as clues, the laser surveying device 11
Can be moved to a predetermined survey reference point (or below the survey reference point). Further, the laser light L ₃ is partially diffused by passing through the light distribution lens 1 and the window 16
It is irradiated toward the wall surface 87 through b. However, at this time, since the focusing of the front lens group 31 is not performed, the reference line SL formed by the laser beam L ₃ is formed.
Is in a vague state.

Next, the distance from the laser surveying device 11 to the wall 87 is visually measured and input to the distance input section 99. Then, the focusing motor 59 is appropriately rotated and driven, and the front lens group 31 moves to the corresponding position. As a result, as shown in FIG. 6, on the wall surface 87, a high-intensity spot S is formed in the middle portion.
A thin reference line SL having P and extending horizontally
Is clearly formed.

When it is necessary to form the reference line in the entire circumferential direction as in the marking operation in the room, the operator instructs the rotation projecting section 15 to rotate the rotation projecting section 15. . Then, the light-projection unit rotation motor 66 is rotationally driven, and a line formed by the scanning locus of the spot SP is formed on the wall surface existing in the entire circumferential direction. If the surrounding area is relatively dark and the wall surface is very close, this line can be visually identified, but if the surrounding area is relatively bright or the wall surface is relatively long, it can be visually identified. I can't. In that case, the scanning locus of the spot SP is detected using the optical position detector, and marking or the like is performed. That is, due to the directivity of the laser light that travels straight, the light that has passed through the flat plate portion 1b of the light distribution lens 1 travels straight without being diffused. Therefore, even at a long distance, the energy density above the threshold level that can be detected by the optical position detector is maintained. As a result, even when the spot SP cannot be visually observed, the scanning locus can be detected by detecting the spot SP that instantaneously passes by the optical position detector.

When forming the reference line on the flat wall surface existing in only one direction, the operator instructs the rotation projecting portion 15 to stop by the rotation instruction operating portion 98. Then, the light projecting portion rotation motor 66 is stopped, and the reference line SL is formed on the wall surface. In this case, if the length range for forming the reference line is too wide, the rotary light projecting unit 1
For the reason that 5 may be rotated, the length by which the reference line SL is formed, that is, the diffusion angle by the diffusion portions 1a and 1c is limited to a narrow range. Therefore, the diffusion unit 1a,
Since the diffusion rate of the laser light energy by 1c is low and the laser light energy is not wasted, the rotary light projecting unit 1
As compared with the case where 5 is rotated to scan the spot SP, the reference line SL can be visually formed even if the wall surface is farther away or the surroundings are brighter. The operator presses the rotational position adjustment button 100 a proper number of times so that the reference line SL is formed on a desired wall surface,
The rotation position of the rotary light projecting unit 15 is adjusted. Then, the reference line SL formed on the desired wall surface is visually observed to perform marking or the like.

Even when the reference line is formed on the flat wall surface existing in only one direction, if the distance to the wall surface becomes further and the reference line becomes brighter, the reference line S
Visual inspection of L becomes impossible. In that case, the operator gives an instruction to rotate the rotary light projecting section 15 by the rotation instruction operating section 98. Then, the light projecting unit rotating motor 66 is rotationally driven, and a line formed by the scanning locus of the spot SP is formed on the flat wall surface. In this case, since the scanning locus of the spot SP cannot be visually observed, the operator identifies the scanning locus of the spot SP by the photodetector and performs marking or the like.

In the laser surveying device according to the present embodiment, the motor is not accelerated or decelerated during the projection of the reference line. Therefore, the laser surveying device itself vibrates and the reference line is shaken, or the power consumption of the projection unit rotating motor 66 is reduced. It never grows.

[0050]

[Second Embodiment] In the second embodiment, as compared with the first embodiment, the light distributing lens 1 which is exactly the same as that of the first embodiment is arranged around the optical axis 9
It is characterized in that it is rotated by 0 ° and placed horizontally, and the other parts are the same. That is, the light distribution lens 1 shown in FIGS. 3 and 4 is fitted into the light projecting window 33 in such a direction that the power is exerted only in the vertical direction (vertical direction) of FIGS. Therefore, when the motor 66 for rotating the light projecting portion is stopped, as shown in FIG. 7, a thin reference line SL having a high-intensity spot SP in the middle portion and extending in the vertical direction is formed on the wall surface 87. To be done.

The reference line SL can be visually observed under a condition that the distance is relatively short and the surroundings are relatively dark. Therefore, when it is desired to perform the marking operation with the reference line SL oriented in the vertical direction, the rotational position adjustment is performed. The projection direction of the reference line SL is adjusted by the button 100, and the reference line SL is visually checked for marking or the like.

On the other hand, when it is desired to project a horizontal reference line, the light-projection rotation motor 66 is rotated by turning on the rotation instruction operation unit 98 even when the distance is relatively short and the surroundings are relatively bright. Then, since the high-intensity spot SP is scanned in the horizontal direction, a horizontal line is formed by the afterimage of the spot SP. If the line due to the afterimage of the spot SP can be identified, marking or the like may be performed visually, but if it is difficult to identify, the scanning locus of the spot SP is detected using an optical position detector to perform marking or the like. To do.

As described above, according to this embodiment, it is not possible to switch the method of projecting the reference line according to the distance, but by switching the projection method, the direction in which the reference line is to be formed is the vertical direction or the horizontal direction. You can switch to.

[0054]

[Third Embodiment] In the third embodiment, a light distributing lens 101 as shown in FIGS. 8 and 9 is fitted in a light projecting window 33 instead of the light distributing lens 1 as compared with the first embodiment. That is, the other parts are the same. This light distribution lens 101
Has an outer shape as shown in FIG.
Is a kind of positive cylindrical lens having power only in the axial direction (horizontal direction) orthogonal to the paper surface of FIG. That is, FIG.
9, which is a top view of the light distribution lens 101, the light distribution lens 101 has a diffusion portion 101a, 101c having a shape in which a general positive cylindrical lens is divided into two along its generatrix. And each of the diffusion units 101a, 10
It has a shape in which a parallel flat plate portion 101b sandwiched between 1c is integrally formed.

Therefore, as in the case of the light distributing lens 1 of the first embodiment, the respective diffusing sections 101a, 1a serving as the light distributing lens.
The laser light transmitted through 01c is once converged in the axial direction having power and then diffused to statically form the reference line SL of relatively low brightness on the wall surface 87. In addition, the flat plate portion 101
The laser light transmitted through b forms a relatively high-intensity spot SP at the center of the reference line SL without being diffused at all.

According to the third embodiment, the same operation as that of the first embodiment is produced. Further, in the third embodiment, the light distribution lens 101 is arranged so that the light distribution window is oriented so as to have power only in the vertical direction (vertical direction) of FIGS. 1 and 2 as in the second embodiment. It may be fitted in 33.

[0057]

[Fourth Embodiment] In the fourth embodiment, as compared with the first embodiment, a light distributing lens 102 equivalent to the light distributing lens 1 in which only the flat plate portion 1b is removed is shown in FIGS. Projecting window 33 so as to have power only in the axial direction (horizontal direction) orthogonal to
The other parts are the same. That is, as shown in the top view of FIG. 10, this light distribution lens 102 has a diffusion portion 102a, 10 having a shape in which a general negative cylindrical lens is divided into two along its generatrix.
2b are separated by a gap.

Therefore, as in the case of the light distributing lens 1 of the first embodiment, each of the diffusing parts 102a, 102a as the light distributing lens.
The laser beam that has passed through 02b is diffused in the axial direction with power to statically form a relatively low-luminance reference line SL on the wall surface (measurement target). In addition, each diffusion unit 102a, 1
The laser light passing between 02b is not diffused at all and the spot S having a relatively high brightness is formed at the center of the reference line SL.
Form P.

According to the fourth embodiment, the same operation as that of the first embodiment is produced. Further, in the fourth embodiment, the light distribution lens 102 is arranged so that the light distribution window is oriented so as to have power only in the vertical direction (vertical direction) of FIGS. 1 and 2 as in the second embodiment. It may be fitted in 33.

[0060]

[Fifth Embodiment] In the fifth embodiment, as compared with the third embodiment, a light distribution lens 103 equivalent to the light distribution lens 101 in which only the flat plate portion 101b is removed is used. It is characterized in that it is fitted in the light projecting window 33 so as to have power only in the axial direction (horizontal direction) orthogonal to the above, and the other parts are the same. That is, as shown in the top view of FIG. 11, the light distributing lens 103 has a diffusing section 103 having a shape obtained by dividing a general positive cylindrical lens into two along its generatrix.
a and 103b are separated by a gap.

Therefore, the light distribution lens 101 of the second embodiment.
In the same manner as the above case, each diffusion unit 103 as a light distribution lens
The laser light that has passed through a and 103b is once converged in the axial direction having power, and statically forms the reference line SL of relatively low brightness on the wall surface (object to be surveyed). In addition, each diffusion unit 1
The laser light passing between 03a and 103b forms a relatively high-luminance spot SP in the center of the reference line SL without being diffused at all.

According to the fifth embodiment, the same operation as that of the first embodiment is produced. Further, in the fifth embodiment, the light distribution lens 103 is arranged such that the light distribution window is oriented so as to have power only in the vertical direction (vertical direction) of FIGS. 1 and 2 as in the second embodiment. It may be fitted in 33.

[0063]

Sixth Embodiment In the sixth embodiment, as compared with the first embodiment, a light distribution lens 104 equivalent to the diffuser 1c of the light distribution lens 1 also serving as a flat plate portion is provided in the light projecting window 33. It is characterized by being fitted, and other parts are the same. That is, the light distribution lens 104 has a contour as shown in FIG. 12, and is a kind of negative cylindrical lens having power only in the axial direction (horizontal direction) orthogonal to the paper surface of FIGS. 1 and 2. is there.
That is, as shown in FIG. 13 which is a top view seen from the direction C in FIG. 12, the light distribution lens 104 is a general negative cylindrical lens which is divided into two along its generatrix, and one of them is used as a diffusion portion 104a. At the same time, the flat section 104b having a parallel plane is integrally connected to the divided section along the optical axis.

As shown in FIG. 13, the penta prism 35
The laser light L ₃ emitted from the laser enters the diffuser 104 a together with the flat plate 104 b of the light distribution lens 104. Of these, the laser light transmitted through the flat plate portion 104b forms a spot SP of relatively high brightness on the wall surface 87 without being diffused at all, as in the case of the conventional scanning method. Further, the laser light transmitted through the diffusing section 104a as the light distributing lens is diffused in the axial direction having the power as in the case of the system using the conventional cylindrical lens, and the reference light of relatively low brightness is displayed on the wall surface 87. Form the line SL statically.
That is, the diffusion unit 104a diffuses the laser light above the spot SP in FIG. 13 to form the reference line SL extending from the spot SP to the upper side.

According to the sixth embodiment, the same operation as that of the first embodiment is produced. Further, in the sixth embodiment, the light distribution lens 104 is arranged so that the light distribution lens 104 is oriented so as to have power only in the vertical direction (vertical direction) of FIGS. 1 and 2 as in the second embodiment. It may be fitted in 33.

[0066]

Seventh Embodiment In the seventh embodiment, as compared with the second embodiment, a light distribution lens 105 equivalent to the diffuser 101c of the light distribution lens 101 also being a flat plate portion is provided in the light projecting window 33. It is characterized by being fitted, and other parts are the same. That is, the light distributing lens 105 has an outer shape as shown in FIG. 14, and is a kind of negative cylindrical lens having power only in the axial direction (horizontal direction) orthogonal to the paper surface of FIGS. 1 and 2. Is. That is, as shown in FIG. 15 which is a top view seen from the direction D in FIG. 14, the light distributing lens 105 is a general positive cylindrical lens divided into two along its generatrix, and one of them is used as a diffusing portion 105a. At the same time, the flat plate portion 105b having a parallel plane is integrally connected to the divided section along the optical axis.

The laser light L ₃ emitted from the pentaprism 35 enters the diffuser 105a together with the flat plate 105b of the light distribution lens 105. The laser light transmitted through the diffusing section 105a is once converged in the axial direction having power and then diffused to statically form a relatively low-luminance reference line on the wall surface. Further, the laser light transmitted through the flat plate portion 105b forms a relatively high-luminance spot at the end of the reference line without being diffused at all, as in the case of the conventional scanning method.

According to the seventh embodiment, the same operation as that of the first embodiment is produced. Further, in the seventh embodiment, the light distribution lens 105 is arranged such that the light distribution window is oriented so as to have power only in the vertical direction (vertical direction) of FIGS. 1 and 2 as in the second embodiment. It may be fitted in 33.

[0069]

[Embodiment 8] In the eighth embodiment, as compared with the sixth embodiment, a light distribution lens 106 equivalent to the light distribution lens 104 in which only the flat plate portion 104b is removed is used. It is characterized in that it is fitted in the light projecting window 33 so as to have power only in the axial direction (horizontal direction) orthogonal to the above, and the other parts are the same. That is, as shown in the top view of FIG. 16, this light distribution lens 106 is one in which a general negative cylindrical lens is divided into two along its generatrix, and one of them is inserted into the laser light optical path L ₃ from its axial side. It is arranged so that it can be.

Therefore, as in the case of the light distributing lens 1 of the first embodiment, the laser light transmitted through the light distributing lens 106 is
A reference line SL of relatively low brightness is statically formed on the wall surface (object to be surveyed) by being diffused in the axial direction having power.
Further, the laser light passing through the side of the light distribution lens 106 is not diffused at all and forms a spot SP of relatively high brightness at the end of the reference line SL.

According to the eighth embodiment, the same operation as that of the first embodiment is produced. Further, in the eighth embodiment, the light distribution lens 106 is arranged so that the window for projecting light has a power only in the vertical direction (vertical direction) of FIGS. 1 and 2 as in the case of the second embodiment. It may be fitted in 33.

[0072]

[Ninth Embodiment] In the ninth embodiment, a light distribution lens 107 equivalent to the light distribution lens 105 in which only the flat plate portion 105b is removed is used in comparison with the seventh embodiment. It is characterized in that it is fitted in the light projecting window 33 so as to have power only in the axial direction (horizontal direction) orthogonal to the above, and the other parts are the same. That is, as shown in the top view of FIG. 17, this light distribution lens 107 is one in which a general positive cylindrical lens is divided into two along its generatrix, and one of them is inserted into the laser light L ₃ optical path from its axial side. It is arranged so that it can be.

Therefore, as in the case of the light distributing lens 1 of the first embodiment, the laser light transmitted through the light distributing lens 107 is
A reference line SL having a relatively low brightness on the wall surface (object to be surveyed) that is once converged in the axial direction having power and then diffused.
To form statically. In addition, the laser beam that has passed by the side of the light distribution lens 107 is not diffused at all and the reference line S
A relatively high-intensity spot SP is formed at the end of L.

According to the ninth embodiment, exactly the same operation as in the first embodiment is produced. Further, in the ninth embodiment, the light distribution lens 107 is arranged so that the light distribution window is oriented so as to have power only in the vertical direction (vertical direction) of FIGS. 1 and 2 as in the second embodiment. It may be fitted in 33.

[0075]

Example 10 Compared to the first example, the tenth example has power only in the axial direction (horizontal direction) orthogonal to the paper surfaces of FIGS. 1 and 2 instead of the light distributing lens 1. The light distribution lens 108, which is a general negative cylindrical lens,
As shown in FIG. 18, it is characterized in that it is fitted into the light projecting window 33 so that only part of the laser light optical path 1 is transmitted,
The other parts are the same. That is, the light distribution lens 108
Are arranged so that only the lower half of the optical path of the laser light L ₃ is transmitted, as shown in the front view of FIG.

Therefore, in the lower half of the optical path of this laser light L ₃ , as shown in FIG. 20, which is a top view seen from the direction E in FIG. 19, the light distribution lens 108 is moved in the axial direction in which its power is provided. The laser light L ₃ is diffused to statically form a relatively low-luminance reference line SL on the wall surface (object to be surveyed).
On the other hand, the laser light passing through the side of the light distribution lens 108 is not diffused at all and forms a spot SP of relatively high brightness in the center of the reference line SL.

The tenth embodiment produces exactly the same operation as the first embodiment. Further, in the tenth embodiment, the light distribution lens 108 is arranged such that the light distribution window has a power in only the vertical direction (vertical direction) of FIGS. 1 and 2 as in the second embodiment. It may be fitted in 33.

[0078]

Eleventh Embodiment Compared to the tenth embodiment, the eleventh embodiment is different from the tenth embodiment in that instead of the light distributing lens 108, the axial direction (horizontal direction) orthogonal to the paper surface of FIGS. direction)
A light distribution lens 10 obtained by dividing a general negative cylindrical lens having power only in the direction orthogonal to its axis.
9 is fitted in the light projecting window 33, and the other parts are the same. That is, as shown in FIG. 22, each portion 109a of the divided light distribution lens 109, thereby separating the 109b, upper and lower ends of the optical path of the laser beam L ₃ in a state sandwiching the gap between them It is arranged.

Therefore, at the upper end portion and the lower end portion of the optical path of the laser light L ₃ , as shown in FIG. 23 which is a top view seen from the F direction in FIG. 22, the light distribution lens 109 which is a diffusion portion, The laser beam L ₃ is diffused in the axial direction having the power to statically form the comparatively low luminance reference line SL on the wall surface. On the other hand, each part 109a, 1 of the light distribution lens 109
The central portion of the laser beam L ₃ that has passed through the gap between the lines 09b forms a relatively high-luminance spot SP at the center of the reference line SL without being diffused at all.

According to the eleventh embodiment, the same operation as that of the first embodiment is produced. Further, in the eleventh embodiment, the light distribution lens 109 is arranged so that the light distribution window is oriented so that the power is provided only in the vertical direction (vertical direction) of FIGS. 1 and 2 as in the second embodiment. It may be fitted in 33.

[0081]

Twelfth Embodiment In the twelfth embodiment, a light distribution lens 110 equivalent to the light distribution lens 102 of the fourth embodiment and the light distribution lens 109 of the eleventh embodiment is combined in the light projecting window 33. It is characterized by being fitted, and other parts are the same. That is, as shown in FIG. 24, the light distribution lens 110 is
A central portion of a general negative cylindrical lens having a power only in the axial direction (horizontal direction) orthogonal to the paper surface of FIGS. 1 and 2 is formed as an opening 110a which is cut into a rectangle along the optical axis direction. Is.

Therefore, the light distribution lens 110, which is a diffusion unit,
The peripheral portion of the laser light transmitted through the optical member is diffused in the axial direction having power and statically forms the reference line SL of relatively low brightness on the wall surface (object to be surveyed). Further, the laser light that has passed through the opening 110a of the light distribution lens 110 is not diffused at all and forms a relatively high-luminance spot SP at the center of the reference line SL.

The twelfth embodiment produces exactly the same operation as the first embodiment. Further, in the twelfth embodiment, the light distribution lens 110 is arranged such that the light distribution window is oriented so as to have power only in the vertical direction (vertical direction) of FIGS. 1 and 2, as in the second embodiment. It may be fitted in 33.

[0084]

[Thirteenth Embodiment] In the thirteenth embodiment, as compared with the twelfth embodiment, a light distributing lens 111 equivalent to the light distributing lens 110 of the twelfth embodiment being a positive lens is provided in the light projecting window 33. It is characterized by being fitted, and other parts are the same. That is,
As shown in FIG. 25, the light distribution lens 111 has a central portion of a general positive cylindrical lens having power only in the axial direction (horizontal direction) orthogonal to the paper surface of FIGS. 1 and 2.
It is formed as an opening 111a that is cut out in a rectangular shape along the optical axis direction.

Therefore, the light distribution lens 111, which is a diffusion unit,
The peripheral portion of the laser light transmitted through the optical member is once converged in the axial direction with power and then diffused to statically form the comparatively low luminance reference line SL on the wall surface (measurement object). Form. Further, the laser light that has passed through the opening 111a of the light distribution lens 111 is not diffused at all and forms a spot SP of relatively high brightness at the center of the reference line SL.

According to the thirteenth embodiment, exactly the same operation as the first embodiment is produced. Further, in the thirteenth embodiment, the light distribution lens 111 is arranged so that the window for projecting light has a power only in the vertical direction (vertical direction) of FIGS. 1 and 2 as in the case of the second embodiment. It may be fitted in 33.

[0087]

[Embodiment 14] Compared with the first embodiment, the fourteenth embodiment has a diffusing portion 1a, which constitutes the light distribution lens 1 of the first embodiment.
The light distribution lens 112, which is equivalent to the case of using 1c as a graded index lens, is fitted in the light projecting window 33, and the other parts are the same. That is, as shown in FIG. 26, the light distribution lens 112 is divided into three parts in the axial direction (horizontal direction) orthogonal to the paper surfaces of FIGS. 1 and 2. Then, the central portion thereof is configured as a flat plate portion 112b having a uniform refractive index. Further, both ends thereof are diffusion parts 112a and 112c configured as graded index lenses in which the refractive index is distributed so as to gradually increase toward the outer end side.

Therefore, as in the case of the first embodiment, the laser light transmitted through each of the diffusing sections 112a and 112c functioning as a negative lens is diffused in the axial direction having the power, and then on the wall surface (object to be surveyed). Relatively low brightness reference line SL
To form statically. Further, the laser light that has passed through the flat plate portion 112b is not diffused at all and forms a relatively high-luminance spot SP in the center of the reference line SL.

According to the fourteenth embodiment, the same operation as that of the first embodiment is produced. Further, in the fourteenth embodiment, the light distribution lens 112 is projected in such a direction as to have power only in the vertical direction (vertical direction) of the paper surface of FIGS. 1 and 2 as in the second embodiment. It may be fitted into the window 33.

Further, each diffusing section 112 of the light distributing lens 112.
Alternatively, a and 112b may be a graded index portion corresponding to a positive lens in which the refractive index is distributed so as to gradually decrease toward the outer end side. In this way, each diffusion unit 1
The laser beams that have passed through 12a and 112c are once converged in the axial direction with power and then diffused to statically form the reference line SL of relatively low brightness on the wall surface (object to be surveyed). Become.

Further, the diffusing section 112 of the light distributing lens 112.
Only one of a and 112b may be used.

[0092]

Fifteenth Embodiment The fifteenth embodiment is different from the first embodiment in the axial direction (horizontal direction) orthogonal to the paper surfaces of FIGS. 1 and 2.
The light distribution lens 113, which is a combination of a positive cylindrical lens having power only in the vertical direction and a positive cylindrical lens having power only in the vertical direction (vertical direction) of the paper surface, is fitted in the light projecting window 33, and the other parts Are the same.

That is, as shown in FIG. 27, the light distribution lens 1
Reference numeral 13 denotes an axial direction (horizontal direction) orthogonal to the paper surface of FIGS. 1 and 2.
A positive cylindrical lens that has power only in
Horizontal diffusion unit 113a and the vertical direction of the paper (vertical direction)
A positive cylindrical lens that has power only in
Vertical diffusion section 113b on the paper surface of FIG. 1 and FIG.
It has a configuration in which they are arranged in a direction orthogonal to each other. And FIG.
As shown in the front view of FIG.
The light L_ThreeIt was inserted only in the lower half of the optical path. Obedience
As shown in FIG. 29, which is a top view seen from the direction G in FIG.
Laser light L_ThreeIn the lower half of the optical path of
The light L_ThreeIs partially incident on the horizontal diffusion unit 113a.
Together with the laser light L_ThreeIs the vertical diffusion part 113.
incident on b. On the other hand, in the side view seen from the H direction in FIG.
As shown in FIG. 30, the laser light L _ThreeThe upper half of the optical path
, The laser light L_ThreePasses through the light distribution lens 113
Pass without.

Therefore, in the state in which the light projecting portion rotation motor 66 is stopped, as shown in FIG. 31, the horizontal direction extended on the wall surface 87 by the laser light diffused by the horizontal diffusing section 113a. The reference line SL1, the vertical reference line SL2 extending in the vertical direction by the laser light diffused by the vertical diffusion unit 113b, and the light distribution lens 11
A high-intensity spot SP is projected by the laser light that has passed through the light projecting window 33 without entering the light source 3. The horizontal reference line SL1 and the vertical reference line SL2 are orthogonal to each other at an intermediate portion between them, and a high-luminance spot SP is formed at the intersection thereof.

When it is necessary to form the reference line in the entire circumferential direction as in the marking operation in the room, the operator instructs the rotation projecting section 15 to rotate the rotation projecting section 15. . Then, the light-projection unit rotation motor 66 is rotationally driven, and a line formed by the scanning locus of the spot SP is formed on the wall surface existing in the entire circumferential direction. An operator visually or visually identifies this line to perform marking or the like.

Further, when the reference line is formed on the flat wall surface existing only in one direction, the operator instructs the rotation projecting portion 15 to stop the rotation light projecting portion 15. Then, the light-projection unit rotation motor 66 is stopped, and as long as the wall surface is a short distance to some extent and the surroundings are relatively dark,
Horizontal reference line SL1 and vertical reference line SL on the wall
2 is visibly formed. The operator adjusts the rotational position of the rotary light projecting unit 15 by pressing the rotational position adjustment button 100 a proper number of times so that the dot-shaped reference line SL is formed on a desired wall surface. Then, the horizontal reference line SL1 and the vertical reference line SL2 formed on the desired wall surface are visually observed to perform marking or the like.

Even when the reference line is formed on the flat wall surface existing in only one direction, if the distance to the wall surface is further increased or the brightness is increased, the horizontal reference line SL1 and Visual inspection of the vertical reference line SL2 becomes impossible. In that case, the operator is required to operate the rotation instruction operating unit 98.
Is used to instruct rotation of the rotary projection unit 15. Then, the light projecting unit rotating motor 66 is rotationally driven, and a line formed by the scanning locus of the spot SP is formed on the flat wall surface. In this case, since the scanning locus of the spot SP cannot be visually observed, the operator identifies the scanning locus of the spot SP by the photodetector and performs marking or the like.

As described above, according to the fifteenth embodiment, the reference lines SL1 and SL2 are formed in the horizontal and vertical directions without performing the scanning by the rotary projection unit 15. Also,
Even if the distance is long or the surroundings are dark, the reference line in the horizontal direction can be formed as the locus of the spot SP by performing the scanning by the rotary projection unit 15. Further, even when it is necessary to project the reference line in the entire circumferential direction such as inking out in the room, the rotation projection unit 15 scans the reference line extending in the entire circumferential direction to trace the spot SP. Can be formed as.

[0099]

Sixteenth Embodiment The sixteenth embodiment is different from the fifteenth embodiment in that the four sides of the plane-parallel plate have power only in the axial direction (horizontal direction) orthogonal to the plane of the paper of FIGS. A light distribution lens 114 formed by combining a cylindrical lens and a positive cylindrical lens having a power only in the vertical direction (vertical direction) of the paper surface is fitted in the light projecting window 33, and the other parts are the same.

That is, as shown in FIG. 32, the light distribution lens 1
At the center of 14, a flat plate portion 114a made of parallel flat glass that is square when viewed from the front is formed. Then, a horizontal diffusing portion 114b having a shape obtained by bisecting a positive cylindrical lens having power only in an axial direction (horizontal direction) orthogonal to the paper surface of FIGS. 1 and 2 and a vertical direction (vertical direction) of the paper surface. ), And a vertical diffusion portion 114c having a shape obtained by bisecting a positive cylindrical lens having power only in (1) is formed by integral molding so as to surround the flat plate portion 114a.

Therefore, when the motor 66 for rotating the light projecting portion is stopped, the horizontal reference line SL1 extending in the horizontal direction by the laser light diffused by the horizontal diffusing portion 114b and the vertical diffusing surface are formed on the wall surface 87. The vertical reference line SL2 extending in the vertical direction by the laser light diffused by the portion 114c and the high-brightness spot SP by the laser light passing through the flat plate portion 114a are projected. The horizontal reference line SL1 and the vertical reference line SL2 are orthogonal to each other at an intermediate portion between them, and a high-luminance spot SP is formed at the intersection thereof.

According to the sixteenth embodiment, exactly the same operation as that of the fifteenth embodiment is produced. In the sixteenth embodiment,
The shape of the horizontal diffusion portion 114b and the vertical diffusion portion 114c may be obtained by dividing the negative cylindrical lens in two along the axis thereof. Also, the horizontal diffusion portion 114b
Alternatively, the vertical diffusion portions 114c may be formed in only one place each.

[0103]

The seventeenth embodiment differs from the seventeenth embodiment in that the laser light oscillated from one light source (laser diode 34) is emitted through one optical path in the first to sixteenth embodiments.
Laser light emitted from two light sources is emitted through two optical paths, and a cylindrical lens is arranged only in one optical path. <Structure of Embodiment> The structure of the seventeenth embodiment is shown in FIG. In FIG. 33, the rotary light projecting unit 115 has a rotary shaft 122 oriented in the vertical axis direction by a rotary motor 116 as a rotary unit that can freely switch ON / OFF as a switching unit.
Rotate around.

In the rotary light projecting unit 115, two laser diodes 117 and 118 and a cylindrical lens 1 are provided.
19, reflection mirror 120, and beam splitter 121
Is arranged.

Each of the laser diodes 117 and 118 as the first and second laser light sources oscillates a laser beam in parallel with the rotation axis 122. This laser diode 117,1
A cylindrical lens 24 and an anamorphic lens 18 as shown in FIG.

The cylindrical lens 119 as a light distribution lens is a positive cylindrical lens having power only in the axial direction orthogonal to the paper surface of FIG. 33, and emits the laser light oscillated from the laser diode 118 as the first laser light source. It diffuses in the axial direction orthogonal to the paper surface of FIG.

The reflection mirror 120 reflects the laser light transmitted through the cylindrical lens 119 in the direction orthogonal to the rotation axis 122. A beam splitter 121 as an optical path synthesizing unit and an emitting unit axially aligns the laser light reflected by the reflection mirror 120 and the laser light oscillated by the laser diode 117 in the plane of FIG. The light is emitted to the side of 115. <Operation of Embodiment> According to the seventeenth embodiment, in the beam splitter 121, the laser light emitted from the laser diode 117 is adjusted to the central portion of the laser light diffused by the cylindrical lens 119. Therefore, as shown in FIG. 6, the laser light diffused in the cylindrical lens 119 forms the reference line SL extending in the horizontal direction on the wall 87. On the other hand, the laser light emitted from the laser diode 117 forms a high-intensity spot SP at the center of the reference line SL.

Then, when it is necessary to form the reference line in the entire circumferential direction as in the marking operation in the room, the rotary motor 116 rotates the rotary light projecting unit 115. Then, a line formed by the scanning locus of the spot SP is formed on the wall surface existing in the entire circumferential direction. An operator visually or visually identifies this line to perform marking or the like.

When the reference line is formed on the flat wall surface existing in only one direction, the rotary motor 116 is used.
To stop. Then, as long as the wall surface is a short distance to some extent and the surroundings are relatively dark, the reference line SL is visibly formed on the wall surface. Therefore, the operator visually checks the reference line SL formed on the desired wall surface to perform marking or the like.

Even when the reference line is formed on the flat wall surface existing in only one direction, if the distance to the wall surface becomes longer or the brightness becomes brighter, the dot-shaped reference line SL Visual inspection becomes impossible. In that case, the rotary projection unit 115 is rotated by the rotary motor 116.
As a result, since the high-brightness spot SP is scanned, a line due to an afterimage of the spot SP is formed. The operator detects the afterimage of the spot SP using an optical position detector to perform marking or the like. Note that when the rotary light projecting unit 115 is rotated, the reference line SL cannot be formed, and thus the oscillation of the light emitting diode 118 may be stopped.

[0111]

[Embodiment 18] Compared to the 17th embodiment, the 18th embodiment has a laser diode 117 and a beam splitter 121.
It is characterized in that a light distribution lens 123 is provided between and. <Structure of Embodiment> The structure of the eighteenth embodiment is shown in FIG. In FIG. 34, a light distribution lens 123 is a lens having the same configuration as the light distribution lens 101 used in the third example, and is arranged so as to have power only in the axial direction facing the left-right direction in FIG. There is. Therefore, this light distribution lens 1
After being reflected by the beam splitter 121, the laser light transmitted through the peripheral portion of 01 is diffused in the vertical direction of the paper surface. Further, the laser light transmitted through the central portion of the light distribution lens 101 is reflected by the beam splitter 121 and goes straight without being diffused at all. <Operation of Embodiment> According to the eighteenth embodiment, in the beam splitter 121, the laser light diffused by the light distribution lens 123 is made to intersect with the laser light diffused by the cylindrical lens 119. As in the case shown in FIG. 31, the laser light diffused by the cylindrical lens 119 forms a horizontal reference line SL1 extending in the horizontal direction on the wall surface 87. On the other hand, the laser light diffused by the peripheral portion of the light distribution lens 123 forms a vertical reference line SL2 extending in the vertical direction. Further, the laser light transmitted through the central portion of the light distribution lens 123 forms a high-intensity spot SP at the intersection of the reference lines SL1 and SL2.

Then, when it is necessary to form the reference line in the entire circumferential direction as in the marking operation in the room, the rotary motor 116 rotates the rotary light projecting unit 115. Then, a line formed by the scanning locus of the spot SP is formed on the wall surface existing in the entire circumferential direction. An operator visually or visually identifies this line to perform marking or the like.

When the reference line is formed on the flat wall surface existing in only one direction, the rotary motor 116 is used.
To stop. Then, as long as the wall surface is a short distance and the surroundings are relatively dark, the horizontal reference line S is displayed on the wall surface.
L1 and the vertical reference line SL2 are formed to be visible. Therefore, the operator visually checks the horizontal reference line SL1 and the vertical reference line SL2 formed on the desired wall surface to perform marking or the like.

Even when the reference line is formed on the flat wall surface existing in only one direction, if the distance to the wall surface becomes further and the brightness becomes brighter, the horizontal reference line SL1 and Visual inspection of the vertical reference line SL2 becomes impossible. In that case, the rotary projection unit 115 is rotated by the rotary motor 116. As a result, since the high-intensity pot SP is scanned, a line due to the afterimage of the spot SP is formed. The operator detects the afterimage of the spot SP using an optical position detector to perform marking or the like.

[0115]

[Embodiment 19] This embodiment 19 is different from the embodiment 17 in that only one laser diode 126 is arranged and the laser light oscillated from this laser diode 126 is used as the second embodiment.
It is characterized in that it is divided by the beam splitter 124 of.

The structure of the nineteenth embodiment is shown in FIG.
In FIG. 35, a laser diode 126 as a laser light source oscillates laser light in a direction orthogonal to the rotation axis 122 of the rotary light projecting unit 115. The laser beam oscillated from the laser diode 126 is separated by the first beam splitter 124, which serves as an optical path separating unit, into a laser beam that travels straight and a laser beam that is reflected in a direction parallel to the rotation axis 122.

The laser light reflected in the direction parallel to the rotation axis 22 is diffused in the direction orthogonal to the paper surface of FIG. 35 by passing through the cylindrical lens 119, and is orthogonal to the rotation axis 122 by the first reflection mirror 120. It is reflected in the direction you do.

On the other hand, the laser beam transmitted through the first beam splitter 124 is reflected by the second reflecting mirror 125 in the direction parallel to the rotation axis 122. The second beam splitter 121 as an optical path separating means axially aligns the laser light reflected by the first reflection mirror 120 and the laser light reflected by the second reflection mirror 125 in the plane of the paper of FIG. And is emitted to the side of the rotary light projecting unit 115.

According to the nineteenth embodiment, the same operation as that of the seventeenth embodiment is produced.

[0120]

Twentieth Embodiment This twentieth embodiment is different from the nineteenth embodiment in that the second reflecting mirror 125 and the beam splitter 121.
It is characterized in that a light distribution lens 123 is provided between and.

The structure of the twentieth embodiment is shown in FIG.
In FIG. 36, a light distribution lens 123 is a lens having the same configuration as the light distribution lens 123 used in the eighteenth example and arranged in the same direction.

According to the twentieth embodiment, exactly the same action as the eighteenth embodiment is produced.

[0123]

According to the laser surveying instrument of the present invention configured as described above, the method of diffusing the laser beam by the cylindrical lens to form the reference plane or the reference line and the reference plane or the reference plane by scanning the laser beam Combined with the method of forming lines. Therefore, it is possible to project the reference line in the entire circumferential direction, and more than the case of the simple rotary scanning type,
The reference line can be visually projected onto a long-distance wall surface, and even if the surroundings are bright, the reference line can be projected visually.

[Brief description of drawings]

FIG. 1 is a sectional view of a laser surveying instrument according to a first embodiment of the present invention.

FIG. 2 is an optical configuration diagram of the laser emission optical system of FIG.

FIG. 3 is a perspective view of the light distribution lens of FIG.

FIG. 4 is a functional explanatory diagram of the light distribution lens of FIG.

5 is a block diagram showing an internal circuit of the laser surveying device of FIG.

FIG. 6 is an operation explanatory view of the first embodiment of the present invention.

FIG. 7 is an operation explanatory view of the second embodiment of the present invention.

FIG. 8 is a perspective view of a light distribution lens used in a laser surveying instrument according to a third embodiment of the present invention.

9 is a top view of the light distributing lens of FIG.

FIG. 10 is a top view of a light distribution lens used in a laser surveying instrument according to a fourth embodiment of the present invention.

FIG. 11 is a top view of a light distribution lens used in a laser surveying instrument according to a fifth embodiment of the present invention.

FIG. 12 is a perspective view of a light distribution lens used in a laser surveying instrument according to a sixth embodiment of the present invention.

FIG. 13 is a functional explanatory diagram of the light distribution lens of FIG.

FIG. 14 is a perspective view of a light distribution lens used in a laser surveying instrument according to a seventh embodiment of the present invention.

15 is a top view of the light distributing lens of FIG.

FIG. 16 is a top view of a light distribution lens used in a laser surveying instrument according to an eighth embodiment of the present invention.

FIG. 17 is a top view of a light distribution lens used in a laser surveying instrument according to a ninth embodiment of the present invention.

FIG. 18 is a perspective view of a light distribution lens used in a laser surveying instrument according to a tenth embodiment of the present invention.

FIG. 19 is a front view of the light distributing lens of FIG.

20 is a top view of the light distributing lens of FIG.

FIG. 21 is a perspective view of a light distribution lens used in a laser surveying instrument according to an eleventh embodiment of the present invention.

22 is a front view of the light distributing lens of FIG. 21. FIG.

23 is a top view of the light distributing lens of FIG. 21. FIG.

FIG. 24 is a perspective view of a light distribution lens used in a laser surveying instrument according to a twelfth embodiment of the present invention.

FIG. 25 is a perspective view of a light distribution lens used in a laser surveying instrument according to a thirteenth embodiment of the present invention.

FIG. 26 is a perspective view of a light distribution lens used in a laser surveying instrument according to a fourteenth embodiment of the present invention.

FIG. 27 is a perspective view of a light distribution lens used in a laser surveying instrument according to a fifteenth embodiment of the present invention.

28 is a front view of the light distributing lens of FIG.

29 is a top view of the light distribution lens of FIG. 27. FIG.

30 is a side view of the light distribution lens of FIG. 27. FIG.

FIG. 31 is an operation explanatory view of the fifteenth embodiment of the present invention.

FIG. 32 is a perspective view of a light distribution lens used in a laser surveying instrument according to a sixteenth embodiment of the present invention.

FIG. 33 is a schematic configuration diagram of a laser surveying device according to a seventeenth embodiment of the present invention.

FIG. 34 is a schematic configuration diagram of a laser surveying instrument according to an eighteenth embodiment of the present invention.

FIG. 35 is a schematic configuration diagram of a laser surveying instrument according to a nineteenth embodiment of the present invention.

FIG. 36 is a schematic configuration diagram of a laser surveying instrument according to a twentieth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Light distribution lens 11 Laser surveying apparatus 12 Main body casing 13 Light projecting device 15 Rotating light projecting section 20 Main body section 23 Laser diode 27 Polarizing beam splitter 35 Penta prism 66 Light projecting section rotation motor SL Reference line SP spot 101 to 114 Light distribution lens

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Noriaki Takahashi 2-39-9 Maeno-cho, Itabashi-ku, Tokyo Inside Asahi Optical Co., Ltd. (72) Eiichi Ito 2-36-9 Maeno-cho, Itabashi-ku, Tokyo Asahi Optical Co., Ltd.

Claims (16)

[Claims] 1. A laser light source, an emitting portion for emitting laser light oscillated from the laser light source to the outside, and an optical path of the laser light from the laser light source to the emitting portion, in a part of a cross section of the optical path. A light distribution lens having power in only one direction, arranged, rotating means for rotating the emitting direction of the laser light by the emitting section within a fixed plane, and switching means for switching between operation and stop of the rotating means. A laser surveying device characterized in that 2. The laser surveying instrument according to claim 1, wherein the light distribution lens is a cylindrical lens. 3. The laser surveying instrument according to claim 1, wherein the light distribution lens is a graded index lens. 4. The power direction of the light distributing lens is
4. The laser surveying instrument according to claim 1, wherein the rotation direction is the same as the rotation direction of the emitting direction of the laser light by the rotating means. 5. The power direction of the light distribution lens is
The laser surveying instrument according to any one of claims 1 to 3, wherein the laser surveying device is orthogonal to the rotation direction of the emitting direction of the laser light by the rotating means. 6. The light distribution lens diffuses the laser light only on one side of the optical path of the laser light emitted without passing through the light distribution lens.
The laser surveying instrument according to any one of 1. 7. The light distribution lens diffuses the laser light on both sides of the optical path of the laser light emitted without passing through the light distribution lens. Laser surveying instrument described in. 8. The laser surveying device according to claim 1, wherein a plurality of the light distribution lenses are arranged in a part of an optical path cross section of the laser light. 9. The power direction of a part of the plurality of light distributing lenses is the same as the rotation direction of the laser light emitting direction by the rotating means, and the remaining light distribution lenses are the same. 9. The laser surveying device according to claim 8, wherein the direction of the power of the optical lens is orthogonal to the rotation direction of the emitting direction of the laser light by the rotating means. 10. The light distributing lens diffuses the laser light in opposite directions with respect to the optical path of the laser light emitted without passing through the light distributing lenses. 4. The laser surveying instrument according to any one of 3 to 3. 11. A parallel plane plate made of a transparent member is arranged in a portion of the optical path cross section of the laser light where the light distribution lens is not arranged.
Alternatively, the laser surveying device according to item 8. 12. The laser surveying device according to claim 11, wherein said light distribution lens and said plane-parallel plate are integrally formed. 13. A laser light source, an emission part for emitting the laser light oscillated from the laser light source to the outside, and an optical path separation for separating the optical path of the laser light from the laser light source to the emission part into a plurality of optical paths. Means, a light distributing lens arranged in one of the optical paths separated by the optical path separating means, and having a power in only one direction, and a rotating means for rotating the emitting direction of the laser light by the emitting part within a certain plane. A laser surveying instrument, comprising: a switching means for switching between operation and stop of the rotating means. 14. The laser surveying apparatus according to claim 13, further comprising optical path combining means for combining the plurality of optical paths separated by the optical path separating means before the emission part. 15. A first laser light source, a second laser light source, an emission unit that combines laser light oscillated from these laser light sources and emits the laser light to the outside, and the first laser light source emits the laser light. Section, which is arranged in the optical path of the laser beam up to the section, having a power in only one direction, rotating means for rotating the emitting direction of the laser beam by the emitting section within a certain plane, and operation of this rotating means And a switching means for switching between stopping and stopping, and a laser surveying instrument. 16. An optical path synthesizing means for synthesizing an optical path of the laser light transmitted through the light distribution lens and an optical path of the laser light emitted from the second laser light source in front of the emitting portion. 16. The laser surveying device according to claim 15.