JPH01166904U - - Google Patents
Info
- Publication number
- JPH01166904U JPH01166904U JP6478388U JP6478388U JPH01166904U JP H01166904 U JPH01166904 U JP H01166904U JP 6478388 U JP6478388 U JP 6478388U JP 6478388 U JP6478388 U JP 6478388U JP H01166904 U JPH01166904 U JP H01166904U
- Authority
- JP
- Japan
- Prior art keywords
- reflecting mirror
- focal point
- light source
- projector
- projection 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.)
- Pending
Links
- 230000003287 optical effect Effects 0.000 claims 1
Description
第１図は本考案に係るプロジエクタ型前照灯の
一実施例を示す斜視図、第２図は同じ実施例の要
部を示す正面図、第３図は第１図の―線に沿
う断面図、第４図は同じく第１図の―線に沿
う断面図、第５図は同じく本考案の別の実施例を
要部で示す正面図、第６図は従来例を示す断面図
である。
１……プロジエクタ型前照灯、２……反射鏡、
２ａ……第一反射鏡、２ｂ……第二反射鏡、３…
…光源、４……投影レンズ、５……遮光板、Ｆ１
１……第一反射鏡の第一焦点、Ｆ１２……第一反
射鏡の第二焦点、Ｆ２１……第二反射鏡の第一焦
点、Ｆ２２……第二反射鏡の第二焦点、Ｆ３……
投影レンズの焦点。
Fig. 1 is a perspective view showing an embodiment of a projector-type headlamp according to the present invention, Fig. 2 is a front view showing the main parts of the same embodiment, and Fig. 3 is a cross section taken along the line - in Fig. 1. 4 is a sectional view taken along the line - in FIG. 1, FIG. 5 is a front view showing the main parts of another embodiment of the present invention, and FIG. 6 is a sectional view showing the conventional example. . 1...Projector type headlight, 2...Reflector,
2a...first reflecting mirror, 2b...second reflecting mirror, 3...
...Light source, 4... Projection lens, 5... Light shielding plate, F 1
1 ...First focal point of the first reflecting mirror, F12 ...Second focal point of the first reflecting mirror, F21 ...First focal point of the second reflecting mirror, F22 ...Second focal point of the second reflecting mirror , F3 ...
Focus of the projection lens.
Claims (1)
の反射鏡と、この反射鏡側にある第一焦点の近傍
に配設される光源と、前記反射鏡からの光束を受
けるように配置される投影レンズと、前記反射鏡
と前記投影レンズとの中間に配置される遮光板と
から成るプロジエクタ型前照灯において、前記反
射鏡の光軸を対称として対となる少なくとも二組
の反射鏡に分割され、上下方向に配置される第一
反射鏡は前記光源の長軸方向への長さの略中間を
第一焦点とし前記遮光板が設けられた位置を第二
焦点とする回転楕円面で構成され、左右方向に配
置される第二反射鏡は前記光源の長軸方向への長
さの略反射鏡寄りの端部を第一焦点とし前記投影
レンズが設けられた位置を第二焦点とする回転楕
円面で構成され、これ以外の反射鏡は前記第一焦
点と第二焦点との夫々が前記第一反射鏡と第二反
射鏡との夫々の中間に位置する回転楕円面として
構成されたことを特徴とするプロジエクタ型前照
灯。 a spheroidal reflecting mirror formed up to approximately the maximum diameter on the minor axis side; a light source disposed near a first focal point on the reflecting mirror side; and a light source arranged to receive the light beam from the reflecting mirror. In a projector-type headlamp, the projector-type headlamp includes a projection lens, and a light shielding plate disposed between the reflecting mirror and the projection lens, at least two sets of reflecting mirrors forming a pair symmetrically with respect to the optical axis of the reflecting mirror. The first reflecting mirror, which is divided into two and arranged vertically, is an ellipsoid of revolution with a first focal point approximately at the middle of the length in the long axis direction of the light source and a second focal point at the position where the light shielding plate is provided. The second reflecting mirror arranged in the left-right direction has a first focal point at the end of the light source nearer to the reflecting mirror in the longitudinal direction of the light source, and a second focal point at the position where the projection lens is provided. The other reflecting mirrors are configured as ellipsoids of revolution in which the first focal point and the second focal point are respectively located between the first reflecting mirror and the second reflecting mirror. A projector-type headlight that is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6478388U JPH01166904U (en) | 1988-05-17 | 1988-05-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6478388U JPH01166904U (en) | 1988-05-17 | 1988-05-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01166904U true JPH01166904U (en) | 1989-11-22 |
Family
ID=31290243
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6478388U Pending JPH01166904U (en) | 1988-05-17 | 1988-05-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01166904U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04223001A (en) * | 1990-12-25 | 1992-08-12 | Stanley Electric Co Ltd | compound reflector |
| US8123366B2 (en) | 2007-08-24 | 2012-02-28 | Seiko Epson Corporation | Light source with truncated ellipsoidal reflector |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62154501A (en) * | 1985-12-27 | 1987-07-09 | 市光工業株式会社 | Projector type vehicle headlight |
| JPS6471001A (en) * | 1987-09-10 | 1989-03-16 | Koito Mfg Co Ltd | Head light of vehicle |
-
1988
- 1988-05-17 JP JP6478388U patent/JPH01166904U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62154501A (en) * | 1985-12-27 | 1987-07-09 | 市光工業株式会社 | Projector type vehicle headlight |
| JPS6471001A (en) * | 1987-09-10 | 1989-03-16 | Koito Mfg Co Ltd | Head light of vehicle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04223001A (en) * | 1990-12-25 | 1992-08-12 | Stanley Electric Co Ltd | compound reflector |
| US8123366B2 (en) | 2007-08-24 | 2012-02-28 | Seiko Epson Corporation | Light source with truncated ellipsoidal reflector |