JP5681513B2 - 車両用前照灯 - Google Patents
車両用前照灯 Download PDFInfo
- Publication number
- JP5681513B2 JP5681513B2 JP2011024992A JP2011024992A JP5681513B2 JP 5681513 B2 JP5681513 B2 JP 5681513B2 JP 2011024992 A JP2011024992 A JP 2011024992A JP 2011024992 A JP2011024992 A JP 2011024992A JP 5681513 B2 JP5681513 B2 JP 5681513B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- translucent member
- light source
- region
- optical axis
- 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.)
- Expired - Fee Related
Links
- 230000003287 optical effect Effects 0.000 claims description 62
- 230000002093 peripheral effect Effects 0.000 description 11
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- 239000000463 material Substances 0.000 description 3
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- 229910052782 aluminium Inorganic materials 0.000 description 2
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Images
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
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
-
- 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
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/322—Optical layout thereof the reflector using total internal reflection
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Planar Illumination Modules (AREA)
Description
Claims (4)
- 水平カットオフラインと該水平カットオフラインに対して所定の傾斜角をなす傾斜カットオフラインとを有するロービーム用配光パターンを車両前方に投影する車両用前照灯であって、
車両前後方向の前方へ向けて配置された光源と、
前記光源の前方側に配置された透光部材と、を備え、
前記光源は、下端縁が直線状に延びる発光面を有するとともに、該発光面の下端縁を灯具前後方向と略直交する水平線上に位置させるようにして配置されており、
前記透光部材は、前記光源から出射した光を入射させて該透光部材の前面で内面反射させた後、該透光部材の後面で再度内面反射させて該透光部材の前面から出射させるように構成されており、
前記透光部材の前面は、透光部材に入射した光源からの光の少なくとも一部を内面で全反射する自由曲面で構成されており、
前記透光部材の後面は、自由曲面を基準面として形成された所定の光反射制御面で構成されており、
前記透光部材は、一部の領域がアプラナチックレンズとして機能する、
ことを特徴とする車両用前照灯。 - 前記透光部材の前面は、その中央部が光源に向かって凹んでいることを特徴とする請求項1に記載の車両用前照灯。
- 前記透光部材の前面は、光軸を中心とする所定範囲内の中央領域上に、光源からの光を前記後面に向かって反射する反射部が形成されていることを特徴とする請求項1または2に記載の車両用前照灯。
- 前記一部の領域は、前記透光部材の外周から中心に向かって所定の幅をもって形成されている領域であることを特徴とする請求項1乃至3のいずれか1項に記載の車両用前照灯。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011024992A JP5681513B2 (ja) | 2011-02-08 | 2011-02-08 | 車両用前照灯 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011024992A JP5681513B2 (ja) | 2011-02-08 | 2011-02-08 | 車両用前照灯 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2012164562A JP2012164562A (ja) | 2012-08-30 |
JP5681513B2 true JP5681513B2 (ja) | 2015-03-11 |
Family
ID=46843753
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2011024992A Expired - Fee Related JP5681513B2 (ja) | 2011-02-08 | 2011-02-08 | 車両用前照灯 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP5681513B2 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6250289B2 (ja) * | 2013-02-07 | 2017-12-20 | 株式会社小糸製作所 | 光学面決定方法 |
JP6226669B2 (ja) * | 2013-09-25 | 2017-11-08 | ライト プレスクリプションズ イノベーターズ エルエルシー | 車両用灯具 |
JP2021125294A (ja) * | 2020-01-31 | 2021-08-30 | 住友ベークライト株式会社 | 光分配器、照明用光源および装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7460985B2 (en) * | 2003-07-28 | 2008-12-02 | Light Prescriptions Innovators, Llc | Three-dimensional simultaneous multiple-surface method and free-form illumination-optics designed therefrom |
ES2263128T3 (es) * | 2004-04-21 | 2006-12-01 | C.R.F. Societa Consortile Per Azioni | Faro en forma de placa delgada para vehiculos automoviles. |
JP4964753B2 (ja) * | 2007-12-12 | 2012-07-04 | 株式会社小糸製作所 | 車両用照明灯具 |
JP5350771B2 (ja) * | 2008-12-24 | 2013-11-27 | 株式会社小糸製作所 | 車両用照明灯具 |
-
2011
- 2011-02-08 JP JP2011024992A patent/JP5681513B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2012164562A (ja) | 2012-08-30 |
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