JP4656004B2 - 車両用前照灯 - Google Patents
車両用前照灯 Download PDFInfo
- Publication number
- JP4656004B2 JP4656004B2 JP2006153870A JP2006153870A JP4656004B2 JP 4656004 B2 JP4656004 B2 JP 4656004B2 JP 2006153870 A JP2006153870 A JP 2006153870A JP 2006153870 A JP2006153870 A JP 2006153870A JP 4656004 B2 JP4656004 B2 JP 4656004B2
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- JP
- Japan
- Prior art keywords
- projection lens
- shape
- vehicle headlamp
- view
- deformation
- 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.)
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- 238000012986 modification Methods 0.000 claims 1
- 230000004048 modification Effects 0.000 claims 1
- 230000003287 optical effect Effects 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 3
- 239000013585 weight reducing agent Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Images
Description
K=a×R×R+b………(1)
2 放電灯(光源)
3 リフレクタ
4 投影レンズ
5 シェード
6 ソケット機構
7 発光部
8 フレーム部材
9 透孔
10 反射面
11 縦長領域
12 一般の投影レンズ
13 反射光が透過する部分の縦長領域から外側の形状に2次曲線的な変形を加えた投影レンズ
LP 所定の配光パターン
HL−HR 左右の水平線
VU−VD 上下の垂直線
Z1−Z1 反射面の光軸
Z2−Z2 投影レンズの光軸
F1 反射面の第1焦点
F2 反射面の第2焦点
F3 投影レンズの焦点
O−O 中心
K 異型度
L1〜6、M1〜4、N1〜2 距離
Claims (3)
- プロジェクタタイプの車両用前照灯において、
光源と、
楕円もしくは楕円を基準とする反射面を有し、かつ、前記光源からの光を反射させるリフレクタと、
前記リフレクタの前記反射面からの反射光を透過させて所定の配光パターンとして前方に投影する投影レンズと、
を備え、
前記投影レンズの正面視の左右両側縁は、一般の投影レンズの正面視の円形状の左右両側縁より内側に位置し、
前記投影レンズは、前記一般の投影レンズの左右両側部分を除いた中央部分であって、前記反射光のほとんどが透過する縦長領域の形状を基本とする基本形状に合わせた形状に形成されていて、
前記投影レンズの正面視の左右両側縁は、2次曲線的な変形の変形度に基づいて形成されている、
ことを特徴とする車両用前照灯。 - 前記投影レンズの正面視の左右両側縁は、2次曲線的な変形の変形度に基づいて形成されているものであって、
前記一般の投影レンズを所定数個のほぼ水平面で切断し、前記ほぼ水平面で切断された各断面の距離に異型度を乗じ、前記投影レンズの前記縦長領域の外側の形状に、2次曲線的な変形を加えるものである、ことを特徴とする請求項1に記載の車両用前照灯。 - 前記2次曲線的な変形の変形度に基づいて形成されている前記投影レンズの正面視の形状は、縦長の楕円形状である、ことを特徴とする請求項2に記載の車両用前照灯。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006153870A JP4656004B2 (ja) | 2006-06-01 | 2006-06-01 | 車両用前照灯 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006153870A JP4656004B2 (ja) | 2006-06-01 | 2006-06-01 | 車両用前照灯 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007324000A JP2007324000A (ja) | 2007-12-13 |
JP4656004B2 true JP4656004B2 (ja) | 2011-03-23 |
Family
ID=38856616
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006153870A Active JP4656004B2 (ja) | 2006-06-01 | 2006-06-01 | 車両用前照灯 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4656004B2 (ja) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0684401A (ja) * | 1992-09-01 | 1994-03-25 | Koito Mfg Co Ltd | プロジェクタ型前照灯 |
JP2001023419A (ja) * | 1999-07-12 | 2001-01-26 | Koito Mfg Co Ltd | 車両用前照灯 |
JP2003217321A (ja) * | 2002-01-24 | 2003-07-31 | Stanley Electric Co Ltd | 車両用灯具 |
-
2006
- 2006-06-01 JP JP2006153870A patent/JP4656004B2/ja active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0684401A (ja) * | 1992-09-01 | 1994-03-25 | Koito Mfg Co Ltd | プロジェクタ型前照灯 |
JP2001023419A (ja) * | 1999-07-12 | 2001-01-26 | Koito Mfg Co Ltd | 車両用前照灯 |
JP2003217321A (ja) * | 2002-01-24 | 2003-07-31 | Stanley Electric Co Ltd | 車両用灯具 |
Also Published As
Publication number | Publication date |
---|---|
JP2007324000A (ja) | 2007-12-13 |
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