JPH0179203U - - Google Patents
Info
- Publication number
- JPH0179203U JPH0179203U JP1987174399U JP17439987U JPH0179203U JP H0179203 U JPH0179203 U JP H0179203U JP 1987174399 U JP1987174399 U JP 1987174399U JP 17439987 U JP17439987 U JP 17439987U JP H0179203 U JPH0179203 U JP H0179203U
- Authority
- JP
- Japan
- Prior art keywords
- front lens
- point
- normal
- lens
- degrees
- 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
- 230000003287 optical effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 1
Description
第１図及び第２図は本考案に係る前面レンズの
設定手順の説明図である。第３図はスラント形前
照灯の一般的構造を説明するための垂直断面図、
第４図は同じく水平断面図である。第５図は第３
図のＡ部を拡大して描いた光路図、第６図は第４
図のＢ部を拡大して描いた光路図である。
１……ランプハウジング、２……前面レンズ、
２′……本考案に係る前面レンズ、２ａ，２ａ′
……前面レンズの内面、２ｂ，２ｂ′……前面レ
ンズの外面、３……リフレクタ、４……光源バル
ブ、５……バルブ用のソケツト。
FIGS. 1 and 2 are explanatory diagrams of the procedure for setting the front lens according to the present invention. Figure 3 is a vertical sectional view to explain the general structure of a slant headlight.
FIG. 4 is also a horizontal sectional view. Figure 5 is the third
The optical path diagram is an enlarged view of part A in the figure.
FIG. 2 is an enlarged optical path diagram of part B in the figure. 1...Lamp housing, 2...Front lens,
2'...Front lens according to the present invention, 2a, 2a'
...Inner surface of the front lens, 2b, 2b'...Outer surface of the front lens, 3...Reflector, 4...Light source bulb, 5...Socket for bulb.
Claims (1)
ンズ面の少なくとも１部分が、上記前照灯の光軸
に対して４５度以下の交角を有する自動車用前照
灯の前面レンズにおいて、 (a) 上記４５度以下の交角をなすレンズ面の任
意の点Ｐにおける法線をｈとし、 (b) 上記の点Ｐに入射した、光軸に平行な光線
が、当該前面レンズを通過して出射する点をＱと
し、 (c) 上記の点Ｑにおける法線をｈ′とし、 (d) 前記の法線ｈと法線ｈ′とが平行となるよ
うに設定したことを特徴とする、自動車用前照灯
の前面レンズ。[Scope of Claim for Utility Model Registration] A front lens for an automobile headlamp, in which at least a portion of the lens surface has an angle of intersection of 45 degrees or less with the optical axis of the headlamp. In the front lens of the lamp, (a) the normal line at any point P on the lens surface that forms the above-mentioned intersection angle of 45 degrees or less is h, and (b) the ray of light parallel to the optical axis that is incident on the above-mentioned point P is The point where the light passes through the front lens and exits is Q. (c) The normal line at the above point Q is h'. (d) The normal h and the normal h' are set to be parallel. The front lens of an automobile headlamp is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987174399U JPH0739126Y2 (en) | 1987-11-17 | 1987-11-17 | Front lens of automobile headlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987174399U JPH0739126Y2 (en) | 1987-11-17 | 1987-11-17 | Front lens of automobile headlight |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0179203U true JPH0179203U (en) | 1989-05-29 |
| JPH0739126Y2 JPH0739126Y2 (en) | 1995-09-06 |
Family
ID=31466255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987174399U Expired - Lifetime JPH0739126Y2 (en) | 1987-11-17 | 1987-11-17 | Front lens of automobile headlight |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0739126Y2 (en) |
-
1987
- 1987-11-17 JP JP1987174399U patent/JPH0739126Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0739126Y2 (en) | 1995-09-06 |