WO2024009720A1 - Vehicle lamp - Google Patents

Vehicle lamp Download PDF

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Publication number
WO2024009720A1
WO2024009720A1 PCT/JP2023/022210 JP2023022210W WO2024009720A1 WO 2024009720 A1 WO2024009720 A1 WO 2024009720A1 JP 2023022210 W JP2023022210 W JP 2023022210W WO 2024009720 A1 WO2024009720 A1 WO 2024009720A1
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WIPO (PCT)
Prior art keywords
control lens
light
lens
control
section
Prior art date
Application number
PCT/JP2023/022210
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French (fr)
Japanese (ja)
Inventor
貴彦 本多
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株式会社小糸製作所
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Publication of WO2024009720A1 publication Critical patent/WO2024009720A1/en

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    • 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
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • 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
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • 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
    • F21S41/265—Composite lenses; Lenses with a patch-like 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
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • 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
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/20—Illuminance distribution within the emitted light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to the technical field of a vehicular lamp having a plurality of control lens parts that project light.
  • a vehicle lamp that has an optical system configured such that light emitted from a light source is incident on a projection lens, the traveling direction of the light is controlled by the projection lens, and the light is irradiated to the outside (for example, Patent Document 1 reference).
  • a plurality of light sources are mounted on a substrate, and a plurality of control lens portions of a projection lens are provided at positions corresponding to each light source.
  • the light emitted from each light source is incident on each control lens section, the traveling direction of which is controlled by the control lens section, and the light is irradiated to the outside.
  • the back focus which is the distance between the light emission surface of the light source and the control lens section, has a different length depending on the control lens section, and the irradiation range of light is determined by the length of the back focus and the curvature of the entrance surface of each control lens section. They are different. For example, in a control lens section with a long back focus, light is easily controlled in the direction of convergence, and in a control lens section with a short back focus, light is easily controlled in the direction of diffusion.
  • the total length of the vehicle lamp in the optical axis direction depends on the control lens portion with the highest light-gathering performance, and depending on the configuration of the optical system, there is a risk that miniaturization of the vehicle lamp in the optical axis direction may be hindered. There is.
  • an object of the present invention is to form a desired light distribution pattern while ensuring miniaturization in the optical axis direction.
  • a vehicle lamp includes a plurality of light sources that each emit light, and a projection lens that has a plurality of control lens sections that project light emitted from the plurality of light sources, and the plurality of control lenses At least a first control lens part and a second control lens part are provided as parts, the back focus of the first control lens part is longer than the back focus of the second control lens part, and the back focus of the first control lens part is made longer than the back focus of the second control lens part.
  • a primary lens is disposed between the lens portion and the light source to control light in a condensing direction.
  • the light emitted from the light source and incident on the primary lens is controlled by the primary lens in the condensing direction and is incident on the first control lens section, so that the distance from the light source to the first control lens section is
  • the focal length of the control lens section 1 is shorter than the focal length of the control lens section 1.
  • the light emitted from the light source and incident on the primary lens is controlled in the condensing direction by the primary lens and is incident on the first control lens section, so that the light from the light source to the first control lens section is The distance is shorter than the focal length of the first control lens section, and a desired light distribution pattern can be formed while ensuring miniaturization in the optical axis direction.
  • FIG. 3 is a conceptual diagram showing an optical path in an example having two control lens sections.
  • the direction in which light is irradiated to the outside is assumed to be the front, and the front, back, top, bottom, left, and right directions are indicated.
  • the directions of front, rear, top, bottom, left and right shown below are for convenience of explanation, and the implementation of the present invention is not limited to these directions.
  • the vehicle lamp 1 is, for example, a type that is attached to both the left and right ends of the vehicle body and has a direct optical system that does not have a reflector or the like to reflect light and radiates the light to the outside as direct light. It is a light fixture.
  • the vehicular lamp 1 has a lamp housing 2 having an opening at the front end and a cover 3 that closes the opening of the lamp housing 2 (see FIG. 1).
  • the lamp housing 2 and the cover 3 constitute a lamp outer casing 4, and the interior space of the lamp outer casing 4 is a lamp chamber 5.
  • a substrate 6, a primary lens 7, and a projection lens 8 are arranged in the lamp chamber 5. Note that in addition to a heat sink (not shown) to which the substrate 6 and the like are attached, a holder (not shown) for holding the primary lens 7 and the projection lens 8 may be arranged in the lamp chamber 5.
  • the board 6 faces in the front-rear direction, and a plurality of light sources 9 are mounted on the front surface of the board 6, spaced apart in the left-right direction, for example.
  • a light emitting diode LED
  • At least one primary lens 7 is arranged between the substrate 6 and the projection lens 8.
  • the primary lens 7 has a function of controlling light in a condensing direction.
  • the projection lens 8 is arranged in front of the primary lens 7, and is formed, for example, in a shape extending left and right.
  • the projection lens 8 has a plurality of control lens sections 10 arranged in the left-right direction.
  • the control lens section 10 includes at least a first control lens section 10a and a second control lens section 10b, and is provided in the same number as the light sources 9.
  • the plurality of control lens sections 10 are integrally formed as each part of the projection lens 8.
  • a first control lens section 10a and a second control lens section 10b are provided as the control lens section 10, two light sources 9 are provided, and the primary lens 7 is An example in which one is provided will be described (see FIG. 2).
  • the first control lens section 10a is provided as a condenser lens that focuses light
  • the second control lens section 10b is provided as a diffusion lens that diffuses light. Therefore, the back focus of the first control lens section 10a is longer than the back focus of the second control lens section 10b.
  • the primary lens 7 is arranged between the first control lens section 10a and the light source 9. Since the primary lens 7 has a function of controlling light in the condensing direction, the light emitted from the light source 9 and incident on the primary lens 7 is controlled by the primary lens 7 in the condensing direction and passes through the first control lens. The light is incident on the section 10a.
  • a predetermined light distribution pattern is formed by superimposing the lights emitted from all the light sources 9, and when at least one light source 9 is turned off, one or more light sources
  • a light distribution pattern may be formed by the light emitted from the light source 9 .
  • the emitted light when light is emitted from one of the light sources 9, the emitted light enters the primary lens 7, is controlled by the primary lens 7 in the condensing direction, and is directed to the first light source 9.
  • the light enters the control lens section 10a is controlled in the focusing direction by the first control lens section 10a, is transmitted through the cover 3, and is irradiated forward.
  • the emitted light enters the second control lens section 10b, is controlled in a diffusion direction by the second control lens section 10b, and is transmitted through the cover 3 and forwards. It is irradiated towards.
  • the light emitted from one light source 9 is controlled in the condensing direction by the primary lens 7, and is incident on the first control lens section 10a, so that the light that is incident on the first control lens section 10a is sufficiently effective. Since the solid angle is secured, the distance L from the light source 9 to the first control lens section 10a is shortened compared to the case where the primary lens 7 is not arranged. Note that the distance S shown in FIG. 2 shows the focal length of the first control lens section 10a when the primary lens 7 is not arranged, and the distance P shown in FIG. ).
  • the primary lens 7 When the primary lens 7 is arranged in this way, there is no need to arrange a light emitting point (light source) at the focal point P, and the total length of the optical system including the first control lens section 10a and the primary lens 7 is shortened. becomes possible.
  • the first control lens section 10a is provided as a condensing lens and the second control lens section 10b is provided as a diffusing lens, and the back focus of the two is different.
  • the first control lens section 10a and the second control lens section 10b are not limited to being provided as a condensing lens and a diffusing lens, respectively.
  • the first control lens section 10a and the second control lens section 10b may both be provided as condensing lenses, and the primary lens 7 may be disposed on the side with a longer back focus, and the first control lens Both the portion 10a and the second control lens portion 10b may be provided as diffusion lenses, and the primary lens 7 may be disposed on the side where the back focus is lengthened.
  • a primary light source 9 is provided between at least the control lens section 10 with the longest back focus and the light source 9. It is sufficient if the lens 7 is arranged.
  • the primary lens 7 is not disposed between the control lens section 10 with the shortest back focus and the light source 9, and the other The primary lenses 7 may be arranged between all the control lens units 10 and the light sources 9, respectively.
  • the first control lens section 10a and the second control lens section 10b are provided as the plurality of control lens sections 10, and the first control lens section 10a is The back focus is made longer than the back focus of the second control lens section 10b, and a primary lens 7 that controls light in a focusing direction is arranged between the first control lens section 10a and the light source 9.
  • the light emitted from the light source 9 and incident on the primary lens 7 is controlled in the condensing direction by the primary lens 7 and is incident on the first control lens section 10a.
  • the distance to the first control lens portion 10a is shorter than the focal length of the first control lens portion 10a, and a desired light distribution pattern can be formed while ensuring miniaturization in the optical axis direction.
  • the total length of all optical systems is made to match the total length of the optical system having the control lens section 10 with the shortest back focus. This makes it possible to effectively utilize the light emitted from the light source 9 and improve optical efficiency, while also ensuring significant downsizing of the vehicular lamp 1.
  • the primary lens 7 since it is not necessary to arrange the primary lens 7 on the optical path of all the optical systems, it is possible to reduce the number of parts and reduce the size of the vehicle lamp 1. For example, by arranging the primary lens 7 only on the optical path of one optical system that has the control lens section 10 with the longest back focus length, the increase in the number of parts can be minimized and It is possible to ensure downsizing of the lamp 1.
  • the vehicle lamp 1 can be made smaller.
  • the first control lens section 10a is provided as a condenser lens that condenses light
  • the second control lens section 10b is provided as a diffuser lens that diffuses light. Since a light pattern is formed, it is possible to reduce the size of the vehicle lamp 1 and to improve the degree of freedom in designing the light distribution pattern.
  • control lens sections 10 are integrally formed as each part of the projection lens 8.
  • the vehicle lamp 1 can be made smaller.
  • SYMBOLS 1 Vehicle lamp, 6... Board, 7... Primary lens, 8... Projection lens, 9... Light source, 10... Control lens part

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

This vehicle lamp comprises a plurality of light sources that each emit light, and a projection lens having a plurality of control lens parts that project the light emitted from each of the plurality of light sources. At least a first control lens part and a second control lens part are provided as the plurality of control lens parts. The back focus of the first control lens part is made longer than the back focus of the second control lens part. A primary lens that controls light in a light focusing direction is disposed between the first control lens part and the light source.

Description

車輌用灯具Vehicle lights
　本発明は光を投影する複数の制御レンズ部を有する車輌用灯具についての技術分野に関する。 The present invention relates to the technical field of a vehicular lamp having a plurality of control lens parts that project light.
　光源から出射された光が投影レンズに入射され投影レンズによって光の進行方向が制御されて外部へ向けて照射されるように構成された光学系を有する車輌用灯具がある（例えば、特許文献１参照）。特許文献１に記載された車輌用灯具においては、複数の光源が基板に搭載され、各光源に対応する位置に投影レンズの複数の制御レンズ部が設けられている。各光源から出射された光はそれぞれの制御レンズ部に入射され制御レンズ部によって進行方向が制御されて外部へ向けて照射される。 There is a vehicle lamp that has an optical system configured such that light emitted from a light source is incident on a projection lens, the traveling direction of the light is controlled by the projection lens, and the light is irradiated to the outside (for example, Patent Document 1 reference). In the vehicle lamp described in Patent Document 1, a plurality of light sources are mounted on a substrate, and a plurality of control lens portions of a projection lens are provided at positions corresponding to each light source. The light emitted from each light source is incident on each control lens section, the traveling direction of which is controlled by the control lens section, and the light is irradiated to the outside.
　光源の出射面と制御レンズ部の間の距離であるバックフォーカスは制御レンズ部によって異なる長さにされており、バックフォーカスの長さや各制御レンズ部の入射面の曲率等によって光の照射範囲が異なるようにされている。例えば、バックフォーカスが長い制御レンズ部においては光が集光方向に制御され易くバックフォーカスが短い制御レンズ部においては光が拡散方向に制御され易くされている。 The back focus, which is the distance between the light emission surface of the light source and the control lens section, has a different length depending on the control lens section, and the irradiation range of light is determined by the length of the back focus and the curvature of the entrance surface of each control lens section. They are different. For example, in a control lens section with a long back focus, light is easily controlled in the direction of convergence, and in a control lens section with a short back focus, light is easily controlled in the direction of diffusion.
　従って、各制御レンズ部のバックフォーカスをそれぞれ必要な長さにすること等により、所望の配光パターンを形成することが可能にされている。 Therefore, it is possible to form a desired light distribution pattern by setting the back focus of each control lens portion to the required length, respectively.
特開２０２１－１８０１１３号公報JP 2021-180113 Publication
　ところで、上記のような複数の制御レンズ部を有する構成においては、各制御レンズ部のバックフォーカスをそれぞれ必要な長さにすること等により所望の配光パターンを形成することが可能ではあるが、バックフォーカスは集光制御するための制御レンズ部が拡散制御するための制御レンズ部より長くなる。 By the way, in the configuration having a plurality of control lens sections as described above, it is possible to form a desired light distribution pattern by setting the back focus of each control lens section to a required length, etc. The back focus is such that the control lens section for controlling light condensation is longer than the control lens section for controlling diffusion.
　従って、車輌用灯具の光軸方向における全長は集光性能の最も高い制御レンズ部に依存することになり、光学系の構成によっては車輌用灯具の光軸方向における小型化に支障を来すおそれがある。 Therefore, the total length of the vehicle lamp in the optical axis direction depends on the control lens portion with the highest light-gathering performance, and depending on the configuration of the optical system, there is a risk that miniaturization of the vehicle lamp in the optical axis direction may be hindered. There is.
　そこで、本発明は、光軸方向における小型化を確保した上で所望の配光パターンを形成することを目的とする。 Therefore, an object of the present invention is to form a desired light distribution pattern while ensuring miniaturization in the optical axis direction.
　本発明に係る車輌用灯具は、光をそれぞれ出射する複数の光源と、前記複数の光源からそれぞれ出射された光を投影する複数の制御レンズ部を有する投影レンズとを備え、前記複数の制御レンズ部として少なくとも第１の制御レンズ部と第２の制御レンズ部が設けられ、前記第１の制御レンズ部のバックフォーカスが前記第２の制御レンズ部のバックフォーカスより長くされ、前記第１の制御レンズ部と前記光源の間に光を集光方向に制御するプライマリーレンズが配置されたものである。 A vehicle lamp according to the present invention includes a plurality of light sources that each emit light, and a projection lens that has a plurality of control lens sections that project light emitted from the plurality of light sources, and the plurality of control lenses At least a first control lens part and a second control lens part are provided as parts, the back focus of the first control lens part is longer than the back focus of the second control lens part, and the back focus of the first control lens part is made longer than the back focus of the second control lens part. A primary lens is disposed between the lens portion and the light source to control light in a condensing direction.
　これにより、光源から出射されプライマリーレンズに入射された光がプライマリーレンズによって集光方向に制御されて第１の制御レンズ部に入射されるため、光源から第１の制御レンズ部までの距離が第１の制御レンズ部の焦点距離より短くなる。 As a result, the light emitted from the light source and incident on the primary lens is controlled by the primary lens in the condensing direction and is incident on the first control lens section, so that the distance from the light source to the first control lens section is The focal length of the control lens section 1 is shorter than the focal length of the control lens section 1.
　本発明によれば、光源から出射されプライマリーレンズに入射された光がプライマリーレンズによって集光方向に制御されて第１の制御レンズ部に入射されるため、光源から第１の制御レンズ部までの距離が第１の制御レンズ部の焦点距離より短くなり、光軸方向における小型化を確保した上で所望の配光パターンを形成することができる。 According to the present invention, the light emitted from the light source and incident on the primary lens is controlled in the condensing direction by the primary lens and is incident on the first control lens section, so that the light from the light source to the first control lens section is The distance is shorter than the focal length of the first control lens section, and a desired light distribution pattern can be formed while ensuring miniaturization in the optical axis direction.
図２と共に本発明車輌用灯具の実施の形態を示すものであり、本図は、車輌用灯具の概略断面図である。An embodiment of the vehicular lamp of the present invention is shown together with FIG. 2, and this figure is a schematic cross-sectional view of the vehicular lamp. 二つの制御レンズ部を有する例において光路を示す概念図である。FIG. 3 is a conceptual diagram showing an optical path in an example having two control lens sections.
　以下に、本発明車輌用灯具を実施するための形態について添付図面を参照して説明する。 Hereinafter, embodiments for implementing the vehicle lamp of the present invention will be described with reference to the accompanying drawings.
　以下の説明にあっては、光の外部への照射方向を前方として前後上下左右の方向を示すものとする。但し、以下に示す前後上下左右の方向は説明の便宜上のものであり、本発明の実施に関しては、これらの方向に限定されることはない。 In the following description, the direction in which light is irradiated to the outside is assumed to be the front, and the front, back, top, bottom, left, and right directions are indicated. However, the directions of front, rear, top, bottom, left and right shown below are for convenience of explanation, and the implementation of the present invention is not limited to these directions.
　尚、図面は発明の内容の理解を容易にするために概略的に示す。 Note that the drawings are shown schematically to facilitate understanding of the content of the invention.
　車輌用灯具１は、例えば、車体の左右両端部にそれぞれ取り付けられて配置され、光を反射するリフレクター等を有さず光が直射光として外部へ向けて照射される直射光学系を有するタイプの灯具である。 The vehicle lamp 1 is, for example, a type that is attached to both the left and right ends of the vehicle body and has a direct optical system that does not have a reflector or the like to reflect light and radiates the light to the outside as direct light. It is a light fixture.
　車輌用灯具１は前端に開口を有するランプハウジング２とランプハウジング２の開口を閉塞するカバー３とを有している（図１参照）。ランプハウジング２とカバー３によって灯具外筐４が構成され、灯具外筐４の内部空間が灯室５とされている。 The vehicular lamp 1 has a lamp housing 2 having an opening at the front end and a cover 3 that closes the opening of the lamp housing 2 (see FIG. 1). The lamp housing 2 and the cover 3 constitute a lamp outer casing 4, and the interior space of the lamp outer casing 4 is a lamp chamber 5.
　灯室５には基板６とプライマリーレンズ７と投影レンズ８が配置されている。尚、灯室５には基板６等が取り付けられる図示しないヒートシンクの他にプライマリーレンズ７や投影レンズ８を保持する図示しないホルダー等が配置されていてもよい。 A substrate 6, a primary lens 7, and a projection lens 8 are arranged in the lamp chamber 5. Note that in addition to a heat sink (not shown) to which the substrate 6 and the like are attached, a holder (not shown) for holding the primary lens 7 and the projection lens 8 may be arranged in the lamp chamber 5.
　基板６は前後方向を向き、基板６の前面には複数の光源９が、例えば、左右方向に離隔して搭載されている。光源９としては、例えば、発光ダイオード（ＬＥＤ：Light Emitting Diode）が用いられている。 The board 6 faces in the front-rear direction, and a plurality of light sources 9 are mounted on the front surface of the board 6, spaced apart in the left-right direction, for example. As the light source 9, for example, a light emitting diode (LED) is used.
　プライマリーレンズ７は基板６と投影レンズ８の間において少なくとも一つが配置されている。プライマリーレンズ７は光を集光方向に制御する機能を有している。 At least one primary lens 7 is arranged between the substrate 6 and the projection lens 8. The primary lens 7 has a function of controlling light in a condensing direction.
　投影レンズ８はプライマリーレンズ７の前側に配置され、例えば、左右に延びる形状に形成されている。投影レンズ８は左右方向において並ぶ複数の制御レンズ部１０を有している。制御レンズ部１０は少なくとも第１の制御レンズ部１０ａと第２の制御レンズ部１０ｂを含み光源９と同数が設けられている。複数の制御レンズ部１０は投影レンズ８の各一部として一体に形成されている。 The projection lens 8 is arranged in front of the primary lens 7, and is formed, for example, in a shape extending left and right. The projection lens 8 has a plurality of control lens sections 10 arranged in the left-right direction. The control lens section 10 includes at least a first control lens section 10a and a second control lens section 10b, and is provided in the same number as the light sources 9. The plurality of control lens sections 10 are integrally formed as each part of the projection lens 8.
　尚、以下には、説明を容易にするために、制御レンズ部１０として第１の制御レンズ部１０ａと第２の制御レンズ部１０ｂが設けられると共に二つの光源９が設けられ、プライマリーレンズ７は一つが設けられた例について説明する（図２参照）。 In the following, for ease of explanation, a first control lens section 10a and a second control lens section 10b are provided as the control lens section 10, two light sources 9 are provided, and the primary lens 7 is An example in which one is provided will be described (see FIG. 2).
　第１の制御レンズ部１０ａは光を集光する集光レンズとして設けられ、第２の制御レンズ部１０ｂは光を拡散する拡散レンズとして設けられている。従って、第１の制御レンズ部１０ａのバックフォーカスは第２の制御レンズ部１０ｂのバックフォーカスより長くされている。 The first control lens section 10a is provided as a condenser lens that focuses light, and the second control lens section 10b is provided as a diffusion lens that diffuses light. Therefore, the back focus of the first control lens section 10a is longer than the back focus of the second control lens section 10b.
　プライマリーレンズ７は第１の制御レンズ部１０ａと光源９の間に配置されている。プライマリーレンズ７は光を集光方向に制御する機能を有しているため、光源９から出射されプライマリーレンズ７に入射された光はプライマリーレンズ７によって集光方向に制御されて第１の制御レンズ部１０ａに入射される。 The primary lens 7 is arranged between the first control lens section 10a and the light source 9. Since the primary lens 7 has a function of controlling light in the condensing direction, the light emitted from the light source 9 and incident on the primary lens 7 is controlled by the primary lens 7 in the condensing direction and passes through the first control lens. The light is incident on the section 10a.
　車輌用灯具１においては、全ての光源９から出射された光が重ね合わされることにより所定の配光パターンが形成されるが、少なくとも一つの光源９が消灯された状態において一つ又は複数の光源９から出射された光によって配光パターンが形成されてもよい。 In the vehicle lamp 1, a predetermined light distribution pattern is formed by superimposing the lights emitted from all the light sources 9, and when at least one light source 9 is turned off, one or more light sources A light distribution pattern may be formed by the light emitted from the light source 9 .
　上記のように構成された車輌用灯具１において、一方の光源９から光が出射されると、出射された光がプライマリーレンズ７に入射されプライマリーレンズ７によって集光方向に制御されて第１の制御レンズ部１０ａに入射され第１の制御レンズ部１０ａによって集光方向に制御されてカバー３を透過されて前方へ向けて照射される。また、他方の光源９から光が出射されると、出射された光が第２の制御レンズ部１０ｂに入射され第２の制御レンズ部１０ｂによって拡散方向に制御されてカバー３を透過されて前方へ向けて照射される。 In the vehicle lamp 1 configured as described above, when light is emitted from one of the light sources 9, the emitted light enters the primary lens 7, is controlled by the primary lens 7 in the condensing direction, and is directed to the first light source 9. The light enters the control lens section 10a, is controlled in the focusing direction by the first control lens section 10a, is transmitted through the cover 3, and is irradiated forward. Further, when light is emitted from the other light source 9, the emitted light enters the second control lens section 10b, is controlled in a diffusion direction by the second control lens section 10b, and is transmitted through the cover 3 and forwards. It is irradiated towards.
　このように一方の光源９から出射された光はプライマリーレンズ７によって集光方向に制御されて第１の制御レンズ部１０ａに入射され第１の制御レンズ部１０ａに入射される光の十分な有効立体角が確保されるため、プライマリーレンズ７が配置されない場合に比し光源９から第１の制御レンズ部１０ａまでの距離Ｌが短縮化される。尚、図２に示す距離Ｓは、プライマリーレンズ７が配置されない場合の第１の制御レンズ部１０ａの焦点距離を示し、図２に示すＰは第１の制御レンズ部１０ａの焦点（仮想の焦点）である。 In this way, the light emitted from one light source 9 is controlled in the condensing direction by the primary lens 7, and is incident on the first control lens section 10a, so that the light that is incident on the first control lens section 10a is sufficiently effective. Since the solid angle is secured, the distance L from the light source 9 to the first control lens section 10a is shortened compared to the case where the primary lens 7 is not arranged. Note that the distance S shown in FIG. 2 shows the focal length of the first control lens section 10a when the primary lens 7 is not arranged, and the distance P shown in FIG. ).
　このようにプライマリーレンズ７が配置された場合には、焦点Ｐに発光点（光源）を配置する必要がなく、第１の制御レンズ部１０ａとプライマリーレンズ７を有する光学系の全長を短縮化することが可能になる。 When the primary lens 7 is arranged in this way, there is no need to arrange a light emitting point (light source) at the focal point P, and the total length of the optical system including the first control lens section 10a and the primary lens 7 is shortened. becomes possible.
　尚、上記には、第１の制御レンズ部１０ａが集光レンズとして設けられ第２の制御レンズ部１０ｂが拡散レンズとして設けられ両者のバックフォーカスが異なる例を示したが、車輌用灯具１においては、第１の制御レンズ部１０ａと第２の制御レンズ部１０ｂがそれぞれ集光レンズと拡散レンズとして設けられることに限られることはない。例えば、第１の制御レンズ部１０ａと第２の制御レンズ部１０ｂが何れも集光レンズとして設けられバックフォーカスが長くされた側にプライマリーレンズ７が配置されていてもよく、第１の制御レンズ部１０ａと第２の制御レンズ部１０ｂが何れも拡散レンズとして設けられバックフォーカスが長くされた側にプライマリーレンズ７が配置されていてもよい。 Incidentally, in the above example, the first control lens section 10a is provided as a condensing lens and the second control lens section 10b is provided as a diffusing lens, and the back focus of the two is different. However, the first control lens section 10a and the second control lens section 10b are not limited to being provided as a condensing lens and a diffusing lens, respectively. For example, the first control lens section 10a and the second control lens section 10b may both be provided as condensing lenses, and the primary lens 7 may be disposed on the side with a longer back focus, and the first control lens Both the portion 10a and the second control lens portion 10b may be provided as diffusion lenses, and the primary lens 7 may be disposed on the side where the back focus is lengthened.
　また、車輌用灯具１においては、バックフォーカスの長さが異なる三つ以上の制御レンズ部１０が設けられた構成において、少なくともバックフォーカスが最も長くされた制御レンズ部１０と光源９の間にプライマリーレンズ７が配置されていればよい。例えば、バックフォーカスの長さが異なる三つ以上の制御レンズ部１０が設けられた構成において、バックフォーカスが最も短くされた制御レンズ部１０と光源９の間にプライマリーレンズ７が配置されず、他の全ての制御レンズ部１０と光源９の間にそれぞれプライマリーレンズ７が配置されていてもよい。 Further, in the vehicle lamp 1, in a configuration in which three or more control lens sections 10 having different back focus lengths are provided, a primary light source 9 is provided between at least the control lens section 10 with the longest back focus and the light source 9. It is sufficient if the lens 7 is arranged. For example, in a configuration in which three or more control lens sections 10 with different back focus lengths are provided, the primary lens 7 is not disposed between the control lens section 10 with the shortest back focus and the light source 9, and the other The primary lenses 7 may be arranged between all the control lens units 10 and the light sources 9, respectively.
　以上に記載した通り、車輌用灯具１にあっては、複数の制御レンズ部１０として少なくとも第１の制御レンズ部１０ａと第２の制御レンズ部１０ｂが設けられ、第１の制御レンズ部１０ａのバックフォーカスが第２の制御レンズ部１０ｂのバックフォーカスより長くされ、第１の制御レンズ部１０ａと光源９の間に光を集光方向に制御するプライマリーレンズ７が配置されている。 As described above, in the vehicle lamp 1, at least the first control lens section 10a and the second control lens section 10b are provided as the plurality of control lens sections 10, and the first control lens section 10a is The back focus is made longer than the back focus of the second control lens section 10b, and a primary lens 7 that controls light in a focusing direction is arranged between the first control lens section 10a and the light source 9.
　従って、光源９から出射されプライマリーレンズ７に入射された光がプライマリーレンズ７によって集光方向に制御されて第１の制御レンズ部１０ａに入射されるため、光源９から第１の制御レンズ部１０ａまでの距離が第１の制御レンズ部１０ａの焦点距離より短くなり、光軸方向における小型化を確保した上で所望の配光パターンを形成することができる。 Therefore, the light emitted from the light source 9 and incident on the primary lens 7 is controlled in the condensing direction by the primary lens 7 and is incident on the first control lens section 10a. The distance to the first control lens portion 10a is shorter than the focal length of the first control lens portion 10a, and a desired light distribution pattern can be formed while ensuring miniaturization in the optical axis direction.
　特に、プライマリーレンズ７の光源９に対する位置やプライマリーレンズ７の屈折力を調整することにより、バックフォーカスが最も短くされた制御レンズ部１０を有する光学系の全長に全ての光学系の全長を一致させることが可能になり、光源９から出射される光の有効活用を図り光学効率を高めた上で車輌用灯具１の大幅な小型化を確保することができる。 In particular, by adjusting the position of the primary lens 7 with respect to the light source 9 and the refractive power of the primary lens 7, the total length of all optical systems is made to match the total length of the optical system having the control lens section 10 with the shortest back focus. This makes it possible to effectively utilize the light emitted from the light source 9 and improve optical efficiency, while also ensuring significant downsizing of the vehicular lamp 1.
　また、プライマリーレンズ７を全ての光学系の光路上に配置する必要がないため、部品点数の増加を少なくした上で車輌用灯具１の小型化を確保することができる。例えば、バックフォーカスの長さが最も長い制御レンズ部１０を有する一つの光学系の光路上のみにプライマリーレンズ７を配置する構成にすることにより、部品点数の増加を最小限にした上で車輌用灯具１の小型化を確保することができる。 Furthermore, since it is not necessary to arrange the primary lens 7 on the optical path of all the optical systems, it is possible to reduce the number of parts and reduce the size of the vehicle lamp 1. For example, by arranging the primary lens 7 only on the optical path of one optical system that has the control lens section 10 with the longest back focus length, the increase in the number of parts can be minimized and It is possible to ensure downsizing of the lamp 1.
　一方、複数の制御レンズ部１０のうちバックフォーカスの長さが最も短くされた制御レンズ部１０以外の制御レンズ部１０と光源９の間にそれぞれプライマリーレンズ７が配置される構成にされることにより、複数の制御レンズ部１０のうちバックフォーカスの長さが最も短くされた制御レンズ部１０以外の制御レンズ部１０と各光源９の間の距離を短くすることが可能になり、光学系全体の全長の短縮化による車輌用灯具１の小型化を図ることができる。 On the other hand, by arranging the primary lenses 7 between the light source 9 and each control lens section 10 other than the control lens section 10 with the shortest back focus length among the plurality of control lens sections 10, , it becomes possible to shorten the distance between each light source 9 and the control lens section 10 other than the control lens section 10 with the shortest back focus length among the plurality of control lens sections 10, thereby reducing the overall optical system. By shortening the overall length, the vehicle lamp 1 can be made smaller.
　さらに、第１の制御レンズ部１０ａが光を集光する集光レンズとして設けられ、第２の制御レンズ部１０ｂが光を拡散する拡散レンズとして設けられることにより、集光レンズと拡散レンズによって配光パターンが形成されるため、車輌用灯具１の小型化を図った上で配光パターンに関する設計の自由度の向上を図ることができる。 Furthermore, the first control lens section 10a is provided as a condenser lens that condenses light, and the second control lens section 10b is provided as a diffuser lens that diffuses light. Since a light pattern is formed, it is possible to reduce the size of the vehicle lamp 1 and to improve the degree of freedom in designing the light distribution pattern.
　さらにまた、複数の制御レンズ部１０が投影レンズ８の各一部として一体に形成されている。 Furthermore, a plurality of control lens sections 10 are integrally formed as each part of the projection lens 8.
　従って、複数の制御レンズ部１０を各別に形成する必要がなく、部品点数の削減による製造コストの低減を図った上で車輌用灯具１の小型化を図ることができる。 Therefore, there is no need to form a plurality of control lens sections 10 separately, and it is possible to reduce the size of the vehicle lamp 1 while reducing the manufacturing cost by reducing the number of parts.
　加えて、複数の光源９が一つの基板６に搭載されることにより、複数の光源９をそれぞれ各別の基板に搭載する必要がなく、部品点数の削減による製造コストの低減を図った上で車輌用灯具１の小型化を図ることができる。 In addition, since the plurality of light sources 9 are mounted on one board 6, there is no need to mount each of the plurality of light sources 9 on separate boards, and the manufacturing cost is reduced by reducing the number of parts. The vehicle lamp 1 can be made smaller.
１…車輌用灯具、６…基板、７…プライマリーレンズ、８…投影レンズ、９…光源、１０…制御レンズ部 DESCRIPTION OF SYMBOLS 1... Vehicle lamp, 6... Board, 7... Primary lens, 8... Projection lens, 9... Light source, 10... Control lens part

Claims (5)

  1. 　光をそれぞれ出射する複数の光源と、
    　前記複数の光源からそれぞれ出射された光を投影する複数の制御レンズ部を有する投影レンズとを備え、
    　前記複数の制御レンズ部として少なくとも第１の制御レンズ部と第２の制御レンズ部が設けられ、
    　前記第１の制御レンズ部のバックフォーカスが前記第２の制御レンズ部のバックフォーカスより長くされ、
    　前記第１の制御レンズ部と前記光源の間に光を集光方向に制御するプライマリーレンズが配置された
    　車輌用灯具。     multiple light sources that each emit light,
    a projection lens having a plurality of control lens sections that project light emitted from the plurality of light sources, respectively;
    At least a first control lens section and a second control lens section are provided as the plurality of control lens sections,
    The back focus of the first control lens part is longer than the back focus of the second control lens part,
    A vehicular lamp, wherein a primary lens for controlling light in a condensing direction is disposed between the first control lens section and the light source.
  2. 　前記第１の制御レンズ部が光を集光する集光レンズとして設けられ、
    　前記第２の制御レンズ部が光を拡散する拡散レンズとして設けられた
    　請求項１に記載の車輌用灯具。     The first control lens section is provided as a condensing lens that condenses light,
    The vehicular lamp according to claim 1, wherein the second control lens section is provided as a diffusion lens that diffuses light.
  3. 　前記複数の制御レンズ部が前記投影レンズの各一部として一体に形成された
    　請求項１又は請求項２に記載の車輌用灯具。     The vehicular lamp according to claim 1 or 2, wherein the plurality of control lens parts are integrally formed as each part of the projection lens.
  4. 　前記複数の光源が一つの基板に搭載された
    　請求項１又は請求項２に記載の車輌用灯具。     The vehicular lamp according to claim 1 or 2, wherein the plurality of light sources are mounted on one board.
  5. 　前記制御レンズ部が三つ以上設けられ、
    　前記制御レンズ部のうち少なくとも二つの制御レンズ部のバックフォーカスが異なる長さにされ、
    　前記複数の制御レンズ部のうちバックフォーカスの長さが最も短くされた前記制御レンズ部以外の前記制御レンズ部と前記光源の間にそれぞれ前記プライマリーレンズが配置された
    　請求項１に記載の車輌用灯具。     three or more control lens parts are provided,
    At least two of the control lens units have different back focus lengths,
    The vehicle according to claim 1, wherein the primary lens is disposed between each of the control lens sections other than the control lens section whose back focus length is the shortest among the plurality of control lens sections and the light source. Light equipment.
PCT/JP2023/022210 2022-07-07 2023-06-15 Vehicle lamp WO2024009720A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012174656A (en) * 2011-02-24 2012-09-10 Stanley Electric Co Ltd Vehicle light unit
JP2016219282A (en) * 2015-05-21 2016-12-22 市光工業株式会社 Vehicular lighting fixture

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012174656A (en) * 2011-02-24 2012-09-10 Stanley Electric Co Ltd Vehicle light unit
JP2016219282A (en) * 2015-05-21 2016-12-22 市光工業株式会社 Vehicular lighting fixture

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