JPH0337703U - - Google Patents
Info
- Publication number
- JPH0337703U JPH0337703U JP9710689U JP9710689U JPH0337703U JP H0337703 U JPH0337703 U JP H0337703U JP 9710689 U JP9710689 U JP 9710689U JP 9710689 U JP9710689 U JP 9710689U JP H0337703 U JPH0337703 U JP H0337703U
- Authority
- JP
- Japan
- Prior art keywords
- lens
- light distribution
- front lenses
- convex lens
- lens step
- 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.)
- Granted
Links
- 230000004907 flux Effects 0.000 claims 1
- 230000003287 optical effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 1
Description
第１図は本考案に係る配光可変型車両用前照灯
の第一の実施例を示す一部切欠した縦断面図、第
２図は第１図における−線断面図、第３図は
レンズ位置変更手段の一実施例を示す要部斜視図
、第４図は同前面レンズの組み合わせを示す模式
化した斜視図、第５図は同前照灯のスポツト照射
時の状態を示すものであり、ａはレンズ位置を示
す説明図、ｂは照度分布を示すグラフ、第６図は
同前照灯の拡散照射時の状態を示すものであり、
ａはレンズ位置を示す説明図、ｂは照度分布を示
すグラフ、第７図ａ及びｂは前面レンズの他の実
施例を模式化した斜視図であり、第８図は同じく
前面レンズの他の実施例を模式化した斜視図、第
９図は従来の配光可変型車両用前照灯を示す略平
断面図、第１０図は同照度分布を示すグラフであ
る。
１……ケーシング、２……前面レンズ、３……
プロジエクタランプ、５……コリメータレンズ、
６……固定レンズ、７，１１……シリンドリカル
凸レンズステツプ、９……可動レンズ、１０……
平坦部。
FIG. 1 is a partially cutaway vertical cross-sectional view showing a first embodiment of a variable light distribution vehicle headlamp according to the present invention, FIG. 2 is a cross-sectional view taken along the - line in FIG. 1, and FIG. FIG. 4 is a schematic perspective view showing a combination of the front lenses, and FIG. 5 is a perspective view of the main parts showing an embodiment of the lens position changing means. FIG. A is an explanatory diagram showing the lens position, b is a graph showing the illuminance distribution, and Fig. 6 shows the state of the headlight during diffuse illumination.
7a is an explanatory diagram showing the lens position, b is a graph showing the illuminance distribution, FIGS. 7a and 7b are schematic perspective views of other embodiments of the front lens, and FIG. FIG. 9 is a schematic perspective view of an embodiment, FIG. 9 is a schematic cross-sectional view showing a conventional variable light distribution vehicle headlamp, and FIG. 10 is a graph showing the illuminance distribution. 1...Casing, 2...Front lens, 3...
Projector lamp, 5...Collimator lens,
6... Fixed lens, 7, 11... Cylindrical convex lens step, 9... Movable lens, 10...
Flat area.
Claims (1)
前面レンズを設け、該両前面レンズの相対位置を
変更して照射光束の照射分布を変更する配光可変
型車両用前照灯において、 前記２枚の前面レンズにそれぞれ構成した等ピ
ツチのシリンドリカルレンズステツプを、少なく
とも一方のレンズについてその一部を平坦な非レ
ンズ部としたことを特徴とする配光可変型車両用
前照灯。 (2) ２枚の前面レンズに構成したシリンドリカ
ルレンズステツプが、凸レンズステツプと凸レン
ズステツプ、凸レンズステツプと凹レンズステツ
プであることを特徴とする請求項１記載の配光可
変型車両用前照灯。[Claims for Utility Model Registration] (1) Two front lenses are provided in front on the optical axis of the projector lamp, and the light distribution is variable by changing the relative position of both front lenses to change the irradiation distribution of the irradiated light flux. A variable light distribution headlamp for a vehicle, characterized in that at least one of the two front lenses has equally spaced cylindrical lens steps formed as a flat non-lens part. Headlights for type vehicles. (2) The variable light distribution vehicle headlamp according to claim 1, wherein the cylindrical lens steps formed of two front lenses are a convex lens step and a convex lens step, or a convex lens step and a concave lens step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9710689U JPH0648643Y2 (en) | 1989-08-22 | 1989-08-22 | Variable light distribution vehicle headlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9710689U JPH0648643Y2 (en) | 1989-08-22 | 1989-08-22 | Variable light distribution vehicle headlight |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0337703U true JPH0337703U (en) | 1991-04-11 |
| JPH0648643Y2 JPH0648643Y2 (en) | 1994-12-12 |
Family
ID=31646256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9710689U Expired - Lifetime JPH0648643Y2 (en) | 1989-08-22 | 1989-08-22 | Variable light distribution vehicle headlight |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0648643Y2 (en) |
-
1989
- 1989-08-22 JP JP9710689U patent/JPH0648643Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0648643Y2 (en) | 1994-12-12 |
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