JPH01126005U - - Google Patents

Info

Publication number
JPH01126005U
JPH01126005U JP1988021181U JP2118188U JPH01126005U JP H01126005 U JPH01126005 U JP H01126005U JP 1988021181 U JP1988021181 U JP 1988021181U JP 2118188 U JP2118188 U JP 2118188U JP H01126005 U JPH01126005 U JP H01126005U
Authority
JP
Japan
Prior art keywords
convex lens
light source
light
source bulb
focal point
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.)
Pending
Application number
JP1988021181U
Other languages
English (en)
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 filed Critical
Priority to JP1988021181U priority Critical patent/JPH01126005U/ja
Publication of JPH01126005U publication Critical patent/JPH01126005U/ja
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
    • F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
    • F21S41/689—Flaps, i.e. screens pivoting around one of their edges
    • 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
    • F21S41/162—Incandescent light sources, e.g. filament or halogen lamps
    • 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
    • F21S41/28—Cover glass
    • 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
    • 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
    • F21S41/255—Lenses with a front view of circular or truncated circular outline

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)

Description

【図面の簡単な説明】
第１図は本考案に係るプロジエクタ型前照灯の
一実施例を示す断面図及び配光パターン図表、第
２図は上記と異なる実施例の断面図である。第３
図乃至第９図はプロジエクタ型前照灯の原理的説
明図である。 １……凹面鏡（反射鏡）、２……光源バルブ、
３……凸レンズ、４……シエード、４ａ……正立
姿勢のシエード、４ｂ……傾倒姿勢のシエード、
４ｃ……シエード支承軸、４ｂ―１……シエード
に形成した回転楕円状反射面、６，６′……プリ
ズム、７……アウタレンズ。

Claims (1)

  1. 【実用新案登録請求の範囲】 １ 反射鏡の焦点近傍に光源バルブを設置し、上
    記の光源バルブから出射した光が反射鏡で反射さ
    れて焦点を結び、凸レンズによつて前記反射光を
    前方に投射するプロジエクタ型前照灯において、 (a) 前記の凸レンズのメリジオナル像画に沿
    つた縁を有するシエードを、後方に傾斜可能なよ
    うに支承し、 (b) 上記シエードが後方に傾倒したときに上
    側となる面に凹面鏡を設けると共に、該凹面鏡の
    反射面を回転楕円面状に構成し、 (c) 上記回転楕円面の第１焦点を光源バルブ
    のフイラメント近傍に位置せしめると共に、その
    第２焦点を前記凸レンズの上端部近傍に位置せし
    めて、光源バルブから回転楕円面鏡に入射した光
    を凸レンズの上端部近傍に集光せしめ、かつ、 (d) 凸レンズ上端近傍にプリズムを設けて、
    上記の凸レンズ近傍に集光した光を水平方向、乃
    至水平よりも下方に向けて投射するように構成し
    たことを特徴とするプロジエクタ型前照灯。 ２ 反射鏡の焦点近傍に光源バルブを設置し、上
    記の光源バルブから出射した光が反射鏡で反射さ
    れて焦点を結び、凸レンズによつて前記反射光を
    前方に投射するプロジエクタ型前照灯において、 (a) 前記の凸レンズのメリジオナル像面に沿
    つた縁を有するシエードを、後方に傾倒可能なよ
    うに支承し、 (b) 上記シエードが後方に傾倒したときに上
    側となる面に凹面鏡を設けると共に、該凹面鏡の
    反射面を回転楕円面状に構成し、 (c) 上記回転楕円面の第１焦点を光源バルブ
    のフイラメント近傍に位置せしめると共に、その
    第２焦点を前記凸レンズの上端部近傍に位置せし
    めて、光源バルブから回転楕円面鏡に入射した光
    を凸レンズの上端部近傍に集光せしめ、かつ、 (e) 凸レンズ近傍に集光した光が、該凸レン
    ズ前方の素通しアウタレンズを通過する個所にプ
    リズムを設けて、上記の凸レンズ近傍に集光した
    光を水平方向、乃至水平よりも下方に向けて投射
    するように構成したことを特徴とするプロジエク
    タ型前照灯。
JP1988021181U 1988-02-22 1988-02-22 Pending JPH01126005U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988021181U JPH01126005U (ja) 1988-02-22 1988-02-22

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988021181U JPH01126005U (ja) 1988-02-22 1988-02-22

Publications (1)

Publication Number Publication Date
JPH01126005U true JPH01126005U (ja) 1989-08-29

Family

ID=31238185

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988021181U Pending JPH01126005U (ja) 1988-02-22 1988-02-22

Country Status (1)

Country Link
JP (1) JPH01126005U (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0676604A (ja) * 1992-06-03 1994-03-18 Koito Mfg Co Ltd 投射型自動車用ヘッドランプ
JP2000195312A (ja) * 1998-12-28 2000-07-14 Robert Bosch Gmbh 種々の特性を有する光束を発生するための車両用ヘッドライト装置
WO2012096725A1 (en) * 2011-01-13 2012-07-19 General Electric Company Projector type headlamp of maximized light collecting efficiency
WO2015024655A1 (de) * 2013-08-20 2015-02-26 Audi Ag Projektionsmodul für einen kraftfahrzeugsscheinwerfer

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0676604A (ja) * 1992-06-03 1994-03-18 Koito Mfg Co Ltd 投射型自動車用ヘッドランプ
JP2000195312A (ja) * 1998-12-28 2000-07-14 Robert Bosch Gmbh 種々の特性を有する光束を発生するための車両用ヘッドライト装置
WO2012096725A1 (en) * 2011-01-13 2012-07-19 General Electric Company Projector type headlamp of maximized light collecting efficiency
US8485705B2 (en) 2011-01-13 2013-07-16 General Electric Company Projector type headlamp of maximized light collecting efficiency
WO2015024655A1 (de) * 2013-08-20 2015-02-26 Audi Ag Projektionsmodul für einen kraftfahrzeugsscheinwerfer

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