WO2020174983A1 - Feu de véhicule - Google Patents

Feu de véhicule Download PDF

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Publication number
WO2020174983A1
WO2020174983A1 PCT/JP2020/002998 JP2020002998W WO2020174983A1 WO 2020174983 A1 WO2020174983 A1 WO 2020174983A1 JP 2020002998 W JP2020002998 W JP 2020002998W WO 2020174983 A1 WO2020174983 A1 WO 2020174983A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
spot light
scanning
vehicle
lens
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2020/002998
Other languages
English (en)
Japanese (ja)
Inventor
一臣 村上
内田　直樹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koito Manufacturing Co Ltd
Original Assignee
Koito Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koito Manufacturing Co Ltd filed Critical Koito Manufacturing Co Ltd
Priority to CN202080015445.0A priority Critical patent/CN113453954A/zh
Publication of WO2020174983A1 publication Critical patent/WO2020174983A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/16—Laser light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/275—Lens surfaces, e.g. coatings or surface structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/67—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors
    • F21S41/675—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors by moving reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/04—Controlling the distribution of the light emitted by adjustment of elements by movement of reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources

Definitions

  • the present disclosure relates to a vehicle lighting device that scans a laser spot light in front of a vehicle in a two-dimensional direction to perform a drawing display of a light distribution pattern.
  • Patent Document 1 discloses a vehicular lamp that displays a headlight of a predetermined shape. Paragraph number [0 1 3 6] [0 1 6 6] [0 3 5 3] of Patent Document 1 and FIG.
  • the elliptical laser spot light is horizontally scanned by a mirror that oscillates at high speed to draw a horizontal line of the light, and the elliptical laser spot light is further scanned horizontally.
  • the horizontal lines to be drawn are vertically stacked to form a headlight display of a predetermined shape.
  • the vehicle front lighting device of Patent Document 1 turns off the elliptical laser spot light when scanning on an object and removes it from the irradiation range. It is possible to perform headlight display of variable light distribution type capable of displaying headlights of the same shape.
  • Spot light generated by a high-power laser beam used for scanning is generally generated in an elliptical shape.
  • the resolution decreases and varies toward both ends of the long axis. It is displayed in the darkest and blurred area near the area.
  • the laser spot light to be emitted is elongated in an elliptical shape with a decrease in resolution and variations.
  • scanning is performed in a state in which a part of them overlaps in the direction (vertical direction) orthogonal to the scanning direction (horizontal direction).
  • Patent literature ⁇ 02020/174983 2 (:171?2020/002998
  • Patent Document 1 Japanese Patent Laid-Open No. 2 0 1 6 -2 0 7 4 8 3
  • variable light distribution headlamp display of FIG. 62 of Patent Document 1 is formed by four rows of horizontal lines that vertically overlap.
  • the oval spot light is extinguished when scanning the part that covers the driver's seat to avoid irradiating the driver's seat.
  • the vehicle lamps should be turned off in the first or fourth row. It must be made. In this case, the formed light distribution pattern becomes insufficient because the irradiation to the driver's seat is avoided and the irradiation to the diagonally upper and lower portions of the vehicle is eliminated.
  • the present disclosure provides a vehicular lamp that performs drawing display of a light distribution pattern in which the flexibility of the irradiation range is improved by preventing unnecessary turning off of spot light during drawing scanning. Is provided.
  • a vehicle lighting device includes a laser light source that generates elliptical spot light.
  • An optical system that converts the elliptical spot light into spot light with an aspect ratio of 1:1 and a light distribution pattern is drawn by scanning the spot light with an aspect ratio of 1:1 toward the outside of the vehicle.
  • the optical system generates spot light having an aspect ratio of 1:1 with respect to the length of the spot light in the first direction and the length in the second direction orthogonal to the first direction.
  • the resolution of spot light in the direction orthogonal to the scanning direction of the straight lines that are generated vertically by repeated high-speed scanning with spot light is improved.
  • the optical system in the vehicle lamp is an anamorphic lens.
  • the optical system in the vehicular lamp is a pair of cylindrical lenses, and one cylindrical lens rotates 90 ° around the central axis with respect to the other cylindrical lens. It is desirable that they are arranged in series on the central axis in this state.
  • the optical system in the vehicular lamp is a special lens, a microlens array is formed on a light incident surface of the special lens, and an emission surface of the special lens is aspherical. Is desirable.
  • the vehicle lamp is preferably a variable light distribution headlamp.
  • a vehicle lamp which is a variable light distribution type headlight, scans by scanning laser spot light with an aspect ratio of 1:1 so that it can be irradiated without irradiation (for example, in a driver's seat of an oncoming vehicle or while walking).
  • the light distribution pattern is displayed and displayed outside the vehicle while avoiding the minimum number of people).
  • the resolution of the spot laser light is improved, so that the variation in the resolution of the spot laser light is reduced, and the spot light to be scanned does not overlap in the direction orthogonal to the scanning direction.
  • the scanning range that must be turned off when scanning an object that does not require irradiation is narrowed, and the vehicular lamp can perform drawing display of the light distribution pattern with improved autonomy of the irradiation range ((1 ) To (4) effect).
  • the vehicular lamp since it is a variable light distribution type headlamp, the maximum range is obtained by avoiding the unnecessary objects (driver's seat of oncoming vehicles, pedestrians, etc.) as much as possible.
  • the type light distribution pattern can be displayed (effect (5)).
  • Fig. 18 is a horizontal sectional view of the first embodiment of the vehicular lamp.
  • FIG. 1 is an enlarged horizontal sectional view of the anamorphic lens of the first embodiment.
  • FIG. 1(:) Fig. 10 is an enlarged vertical sectional view of the anamorphic lens.
  • FIG. 2 is a perspective view of the scanning mechanism and the anamorphic lens according to the first embodiment, as viewed obliquely from the front of the reflecting mirror.
  • FIG. 3 is an explanatory diagram of an optical path in the vehicular lamp according to the first embodiment.
  • Fig. 48 is a scanning explanatory view of an elliptical laser spot light in a conventional vehicle lamp.
  • FIG. 4 is a scanning explanatory view of the elliptical laser spot light in the vehicular lamp of the present disclosure.
  • FIG. 5 is a perspective view of a scanning mechanism and a plurality of cylindrical lenses according to a second embodiment of a vehicular lamp as seen obliquely from the front of a reflecting mirror.
  • FIG. 6 is a partially enlarged horizontal sectional view showing a condenser lens according to a third embodiment of a vehicle lamp.
  • the vehicle lamp 1 according to the first embodiment will be described with reference to FIGS. 18 to 1 (3.
  • the vehicle lamp 1 according to the first embodiment includes a lamp body 2 and a lamp body 2. , A front cover 3 and a headlight unit 4.
  • the lamp body 2 has an opening on the front side of the vehicle, and the front cover 3 is made of a translucent resin or glass. Installed in the opening of the lamp body 2 ⁇ 02020/174983 5 ((171?2020/002998)
  • the lamp chamber 3 is formed inside.
  • the headlamp unit 4 shown in Fig. 18 is placed inside the lamp chamber 3 by the metal support member 5. To be done.
  • the headlight unit 4 has a projection lens 6, a phosphor 7, a laser light source 8, a scanning mechanism 9 and an anamorphic lens 10 as an optical system, which are shown in FIG.
  • the projection lens 6, the phosphor 7, the laser light source 8, the scanning mechanism 9 and the anamorphic lens 10 are all attached to the support member 5.
  • the support member 5 in Fig. 1 includes a bottom plate portion 53, side plate portions (5 stubs, 50) integrated with the left and right end portions of the bottom plate portion 53, and side plates (5 stubs, 50 s).
  • Lens support It has a cylindrical portion 51 that holds the projection lens 6 inside, and a flange portion 52 that is integrated with both the cylindrical portion 51 and the side plate portions (5 stubs, 50).
  • the base plate portion 5 6 has a screw fixing portion 5 and a heat radiating portion 5 9 which is thicker in the front and back than the screw fixing portion 5.
  • the projection lens 6 in FIG. 18 is a transparent or semi-transparent plano-convex lens, and the tip end of the cylindrical portion 5 1 of the lens support 5 with the convex light emitting surface 6 3 facing forward. Fixed inside the.
  • the phosphor 7 has a plate-like shape and is fixed to the inside of the base end of the cylindrical portion 51 of the lens support 5 behind the projection lens 6.
  • the laser light source 8 shown in FIG. 18 has a blue or purple laser diode, and is fixed to the light source support portion 5 II provided on the side plate portion 5 on the left side of the support member 5 to prevent heat during lighting. Dissipate heat.
  • the phosphor 7 is formed as a yellow phosphor when the laser light source 8 is blue, and is formed as a yellow and blue phosphor when the laser light source 8 is purple, and emits white light.
  • White light is red, blue, green ⁇ It may be generated by mixing laser light of three colors.
  • the laser light source 8, which is a laser diode light source, generates a vertically long elliptical spot light.
  • the laser light source 8 is arranged so as to generate vertically elongated elliptical light as shown in FIG.
  • the scanning mechanism 9 shown in FIG. 2 is a scanning device having a reflecting mirror 11 which can be tilted in two axial directions, and is fixed to the front surface of the heat dissipation portion 59. ⁇ 02020/174983 6 ⁇ (: 171?2020/002998
  • the anamorphic lens 10 shown in FIGS. 18 to 10 is an optical system having a plano-convex lens in which the curvature in the horizontal section and the curvature of the light emitting surface in the vertical section are different. Specifically, as shown in Fig. 1 and Fig. 10, the anamorphic lens 10 is formed so that the curvature of the vertical section is larger than that of the horizontal section.
  • the anamorphic lens 10 is fixed to either the bottom plate 5 3 or the base plate 5 6 while being placed between the laser light source 8 and the reflecting surface 1 13 of the reflecting mirror 11 1. ..
  • the headlight unit 4 has three aiming screws 12 (one of which is not shown) rotatably held by the lamp body 2 screwed to the screw fixing portion 5 of the support member 5. As a result, the lamp body 2 is tiltably supported.
  • the vertically elongated elliptical laser spot light !_ 3 1 that causes a decrease in resolution near both ends of the long axis passes through the anamorphic lens 10 and the laser spot light with an aspect ratio 1:1! _ 3 2 improves the resolution in the vertical direction, which had been reduced before transmission through the anamorphic lens 10.
  • the laser spot light !_ 3 2 shown in Fig. 1 and Fig. 10 is reflected by the anamorphic lens 10 by the reflecting surface 1 of the reflecting mirror 1 1. It is condensed and reflected so that the aspect ratio becomes 1:1.
  • the scanning mechanism 9 shown in FIG. 1 and FIG. 2 includes a reflecting mirror 11, a base 13, a rotating body 14, a pair of first suspension bars 15 and a pair of second suspension bars _1, a pair of permanent mirrors.
  • the magnet 17 has a pair of permanent magnets 18 and a terminal portion 19.
  • the plate-shaped rotating body 14 shown in FIG. 2 is supported by the base 13 so that it can be tilted to the left and right by a pair of first suspension bars 15.
  • the reflecting mirror 11 is supported by the rotating body 14 so as to be vertically rotatable by the pair of second chambers _ 16.
  • the pair of permanent magnets 17 and the pair of permanent magnets 18 are arranged in the base 13 ⁇ 02020/174983 7 ⁇ (: 171?2020/002998
  • a pair of first and second suspension bars _ (15, 16) are provided in the extending direction, and the reflecting mirror 11 and the rotating body 14 are independently provided by a control mechanism (not shown).
  • First and second coils (not shown) that are controlled by the electric current and are energized through the terminal portion 19 are provided.
  • the rotating body 14 shown in Fig. 2 reciprocally tilts left and right around the axis of the first torsion bar _ 15 based on whether or not the power is supplied to the first coil (not shown). ..
  • the reflecting mirror 11 tilts up and down reciprocally about the axis of the second suspension bar _ 16 based on whether the second coil (not shown) is turned on or off.
  • the laser with an aspect ratio of 1:1 reflected by the reflecting surface 1 1 3 — the spot light 1-32 is tilted in the horizontal direction of the rotating body 1 4 and the vertical direction of the reflecting surface 1 1 3 .
  • the phosphor 7, the projection lens 6, the front end opening 20 3 of the extension reflector 20 in the lamp chamber 3, and the front cover 3 shown in Fig. 18 are transmitted or passed through in order, and the top, bottom, left, and right To be scanned.
  • the scanning mechanism 9 reciprocally oscillates the white spotted laser spot light !_ 3 2 with an aspect ratio of 1:1 in the left-right direction while shifting the reflecting mirror 11 by a small distance in the vertical direction. Based on the turning on/off control of the laser light source 8, the scanning mechanism 9 vertically stacks dots and lines drawn in a predetermined position and with a predetermined length to form a white light distribution pattern of a predetermined shape based on the scanning mode. (Headlight display) is displayed in front of the outside of the vehicle. In other words, the laser spot light !_32 with an aspect ratio of 1:1 is scanned toward the outside of the vehicle to draw and display the light distribution pattern.
  • the scanning mechanism 9 can be equipped with various scanning mechanisms such as a 1 ⁇ /1 mirror 1 ⁇ /1 3 mirror, a galvanometer mirror, and a rotating mirror.
  • variable type light distribution pattern (see Fig. 4-8) by a conventional vehicular lamp that scans an elliptical laser spot light and a laser spot light with an aspect ratio of 1:1!
  • the advantage of the vehicular lamp 1 of the present embodiment over the conventional example will be described by comparing the variable light distribution patterns (see FIG. 4B) of the vehicular lamp 1 of the present embodiment that scans the.
  • Reference numeral I1 in Fig. 4 is an elliptical laser beam of a conventional vehicle lamp that is vertically long and vertically long. ⁇ 02020/174983 8 ⁇ (: 171?2020/002998
  • the reference numeral 1_32 in FIG. 4 indicates laser spot light having an aspect ratio of 1:1 of the vehicular lamp 1 according to the present embodiment.
  • the symbols !_ in Fig. 4 and Fig. 4 indicate roads ahead of the vehicle (not shown), and symbols 1 to 1 indicate pedestrians on the road ahead.
  • the reference numeral 301 indicates a rectangular scanning area in front of the vehicle by the laser spot light, and the numbers 1, 2, 3, 4 -... on the left side of the scanning area 301 are laser spots. The number of scanning steps by light is shown.
  • the scanning mechanism 9 of the present embodiment uses the laser spot light having an aspect ratio of 1:1 based on the tilt of the reflecting mirror 11.
  • !_ 3 2 scans the first step from left end to right end at high speed.
  • the scanning mechanism 9 tilts the reflecting mirror 1 1 diagonally downward to the left with the laser spot light !_ 3 2 turned off, scans from the left end of the second stage to the right end again at high speed, and then 3 and 4 Repeat up to n steps.
  • the scanning mechanism 9 scans the laser spot light !_ 3 2 so that the upper and lower laser spot light !_ 3 2 are adjacent to each other and do not overlap each other as shown in FIG.
  • the scanning mechanism (not shown) of the conventional vehicle lamp shown in FIG. 4 is similar to the scanning mechanism 9 of the present embodiment, in that scanning from the left end to the right end by the elliptical laser spot light is performed. The point is that the tilting of the reflecting mirror diagonally downward to the left and the scanning from the left end to the right end in the next lower stage are repeated at high speed up to 1!
  • the conventional scanning by the vehicle lamp differs from the scanning in the present embodiment shown in FIG. 4 in that the upper and lower ends of the vertically adjacent elliptical laser spot lights 11 are overlapped with each other. ..
  • the laser spot light has the property of being condensed into an elliptical shape, so that the lower and upper resolutions of the spot light deteriorate and vary. , Long vertical oval. Therefore, in the conventional scanning with vehicle lamps, even if the upper and lower end portions are arranged to be adjacent to each other, the upper and lower end portions are expected to be different due to the variation in the resolution degradation generated in the elliptical laser spot light. They may overlap each other outside.
  • the laser spot light with an aspect ratio of 1:1 is provided by providing an optical system that uses the laser spot light 1_31 as laser spot light with an aspect ratio of 1:1 !_32, that is, an anamorphic lens 10.
  • !_32 has no blurring at the upper and lower ends due to reduced resolution. Therefore, it is not necessary to scan the upper and lower end portions by overlapping as in the conventional method, and the upper and lower end portions of the laser spot light !_ 3 2 may unexpectedly overlap with each other due to variations in the decrease in resolution. Absent.
  • the vehicle lamp that scans the laser spot light with an aspect ratio of 1:1 in the present embodiment and the second and third embodiments to be described later is a variable light distribution type headlamp. It has the following advantages: For example, as shown in Fig. 4, there are pedestrians 1 to 1 in the range of the code 8 "2 2 on the second step. Do not give glare to pedestrians 1 to 1 when scanning laser spot light.
  • the laser spot light !_ 3 2 having the aspect ratio 1:1 may be turned off only when it reaches the range of the code 8 ⁇ 2 2 in the second scanning. ..
  • This embodiment has a laser spot light !_ with an aspect ratio of 1:1. The scanning can be performed without overlapping the spot lights with 3 2 to minimize the extinguishing range.
  • the vehicular lamp according to the second embodiment has an anamorphic optical system according to the first embodiment in which the optical system for changing the elliptical laser spot light !_ 3 1 to the laser spot light !_ 3 2 having an aspect ratio of 1:1. Different from lens 10
  • the vehicle lamp according to the second embodiment has a configuration common to that of the first embodiment, ⁇ 02020/174983 10 ((171?2020/002998
  • the vehicular lamp according to the second embodiment uses an anamorphic lens 1 as an optical system that changes the elliptical laser spot light !_ 3 1 into laser spot light !_ 3 2 having an aspect ratio of 1:1. Instead of 0, it has a pair of cylindrical lenses 21 and 22 of the same shape (see Fig. 5). Each of the cylindrical lenses 21 and 22 has a shape in which the light emitting surface of a transparent or semitransparent rectangular parallelepiped is formed as an arc surface.
  • the cylindrical lens 2 2 is arranged in series on the central axis !_ 1 while being rotated 90 ° around the common central axis !_ 1 with respect to the cylindrical lens 21.
  • the light incident surfaces 2 1 3 and 2 2 3 are directed to the laser light source 8 side, and the light emitting surfaces 2 1 and 2 2 13 are of the scanning mechanism 9. It is arranged between the laser light source 8 and the scanning mechanism 9 while facing the reflection surface 1 13.
  • the light emitted from the laser light source 8 is transmitted through the cylindrical lens 2 1 and the cylindrical lens 2 2 in this order as vertically elongated elliptical laser spot light!
  • the circular laser spot light 1:1 becomes !_ 3 2, which is incident on the reflecting surface 1 13 of the scanning mechanism 9 and is reflected toward the front of the vehicle.
  • the laser spot light 1_3 2 with an aspect ratio of 1:1 is scanned toward the front of the vehicle with the lowered vertical resolution being improved, and a variable light distribution pattern of a predetermined shape is displayed.
  • the vehicular lamp in the third embodiment has an anamorphic optical system in the first embodiment in which the optical system for changing the elliptical laser spot light !_ 3 1 to the laser spot light !_ 3 2 having an aspect ratio of 1:1. Different from lens 10
  • the vehicular lamp according to the third embodiment has the same configuration as that of the first embodiment, and therefore illustration and description of the components other than the laser light source 8 and the optical system are omitted.
  • the vehicular lamp according to the third embodiment is an optical system for changing the elliptical laser spot light !_3 1 to the laser spot light !_ 3 2 having an aspect ratio of 1:1.
  • a special lens 23 having a projection surface 23 is provided.
  • the light emitted from the laser light source 8 is transmitted through the special lens 23 from the microlens array 233 as vertically elongate elliptical laser spot light !_ 31 and is emitted from the light emitting surface 23 of the aspherical shape.
  • the circular laser spot light !_ 32 with an aspect ratio of 1:1 in the vertical and horizontal directions is incident on the reflection surface of the scanning mechanism and is reflected toward the front of the vehicle.
  • the laser spot light !_ 32 with an aspect ratio of 1:1 was scanned toward the front of the vehicle with the lowered vertical resolution being improved, and the variable type light distribution pattern with a predetermined shape was scanned. Display the code.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

La présente invention concerne un feu de véhicule qui comprend : une source de lumière laser qui génère un projecteur elliptique; un système optique qui change le projecteur elliptique en un projecteur ayant un rapport d'aspect de 1 : 1; et un mécanisme de balayage qui dessine et affiche un motif de distribution de lumière par balayage du projecteur ayant le rapport d'aspect de 1 : 1 vers l'extérieur d'un véhicule.
PCT/JP2020/002998 2019-02-27 2020-01-28 Feu de véhicule Ceased WO2020174983A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202080015445.0A CN113453954A (zh) 2019-02-27 2020-01-28 车辆用灯具

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-034446 2019-02-27
JP2019034446A JP2020140822A (ja) 2019-02-27 2019-02-27 車両用灯具

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WO2020174983A1 true WO2020174983A1 (fr) 2020-09-03

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CN115143421A (zh) * 2022-09-05 2022-10-04 苏州龙马璞芯芯片科技有限公司 一种机动车前照灯

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JP2014522507A (ja) * 2011-06-10 2014-09-04 ヒューレット−パッカード デベロップメント カンパニー エル．ピー． 光学的に走査するための装置、システム及び方法
JP2017090467A (ja) * 2011-07-22 2017-05-25 ケーエルエー−テンカー コーポレイション 高品質で安定した出力ビーム、および長寿命高変換効率の非線形結晶を備えたレーザ
JP2017162800A (ja) * 2016-02-22 2017-09-14 ヴァレオ ビジョンＶａｌｅｏ Ｖｉｓｉｏｎ 光源のマトリックスを備えた光ビーム投影デバイス、当該デバイスを備えた照明およびヘッドライトモジュール
JP2017174637A (ja) * 2016-03-24 2017-09-28 株式会社小糸製作所 車両用前照灯

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