JPS647701U - - Google Patents
Info
- Publication number
- JPS647701U JPS647701U JP10175187U JP10175187U JPS647701U JP S647701 U JPS647701 U JP S647701U JP 10175187 U JP10175187 U JP 10175187U JP 10175187 U JP10175187 U JP 10175187U JP S647701 U JPS647701 U JP S647701U
- Authority
- JP
- Japan
- Prior art keywords
- concave mirror
- revolution
- light source
- source bulb
- paraboloid
- 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
- 238000010586 diagram Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 1
Description
第１図は本考案のプロジエクタ型前照灯の一実
施例を示し、模式的に描いた水平断面図である。
第２図は同じく正面図である。第３図は公知例の
プロジエクタ型前照灯の説明図である。第４図乃
至第６図は従来例のプロジエクタ型前照灯を示し
、第４図は平面図、第５図は側面図、第６図は正
面図である。第７図及び第８図は上記従来例の光
学的特性を示す図表である。第９図は従来例の断
面図である。第１０図乃至第１２図は上記従来例
における問題点の説明図である。
１，１′……凹面鏡、１ａ……回転楕円面、１
ｂ……回転放物面、２……光源バルブ、３……凸
レンズ、４……シエード、５……プロジエクタユ
ニツト、６……ランプハウジング、７，７′……
前面カバー、８……固定ブラケツト、９……フレ
ーム。
FIG. 1 is a schematic horizontal sectional view showing an embodiment of the projector type headlamp of the present invention.
FIG. 2 is also a front view. FIG. 3 is an explanatory diagram of a known projector type headlamp. 4 to 6 show a conventional projector type headlamp, in which FIG. 4 is a plan view, FIG. 5 is a side view, and FIG. 6 is a front view. FIGS. 7 and 8 are charts showing the optical characteristics of the above-mentioned conventional example. FIG. 9 is a sectional view of a conventional example. FIGS. 10 to 12 are explanatory diagrams of problems in the above conventional example. 1,1'...Concave mirror, 1a...Spheroidal surface, 1
b... Paraboloid of revolution, 2... Light source bulb, 3... Convex lens, 4... Shade, 5... Projector unit, 6... Lamp housing, 7, 7'...
Front cover, 8... Fixed bracket, 9... Frame.
Claims (1)
の光源バルブから出射した光が凹面鏡で反射され
てカツトラインを有するシエード近傍で焦点を結
び、凸レンズによつて前記反射光を前方に投射す
るプロジエクタ型の自動車用前照灯において、前
記凹面鏡の中央部付近を回転楕円面状に構成する
とともに、該凹面鏡の周辺部付近を回転放物面状
に構成し、前記光源バルブを上記回転放物面の焦
点付近に位置せしめたことを特徴とするプロジエ
クタ型の自動車用前照灯。 A projector type in which a light source bulb is installed near the focal point of a concave mirror, the light emitted from the light source bulb is reflected by the concave mirror and focused near a shade having a cut line, and the reflected light is projected forward by a convex lens. In the automobile headlamp, the vicinity of the center of the concave mirror is configured in the shape of an ellipsoid of revolution, and the vicinity of the periphery of the concave mirror is configured in the shape of a paraboloid of revolution, and the light source bulb is located at the focal point of the paraboloid of revolution. A projector-type automobile headlamp characterized by being located nearby.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10175187U JPH0635286Y2 (en) | 1987-07-03 | 1987-07-03 | Projector type vehicle headlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10175187U JPH0635286Y2 (en) | 1987-07-03 | 1987-07-03 | Projector type vehicle headlight |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS647701U true JPS647701U (en) | 1989-01-17 |
| JPH0635286Y2 JPH0635286Y2 (en) | 1994-09-14 |
Family
ID=31331034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10175187U Expired - Lifetime JPH0635286Y2 (en) | 1987-07-03 | 1987-07-03 | Projector type vehicle headlight |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0635286Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004355852A (en) * | 2003-05-27 | 2004-12-16 | Morita Mfg Co Ltd | Light irradiation equipment for medical use |
| JP2006260823A (en) * | 2005-03-15 | 2006-09-28 | Koito Mfg Co Ltd | Vehicular lighting tool |
| JP2010500716A (en) * | 2006-08-09 | 2010-01-07 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Lighting fixture to be installed in the recess |
-
1987
- 1987-07-03 JP JP10175187U patent/JPH0635286Y2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004355852A (en) * | 2003-05-27 | 2004-12-16 | Morita Mfg Co Ltd | Light irradiation equipment for medical use |
| JP2006260823A (en) * | 2005-03-15 | 2006-09-28 | Koito Mfg Co Ltd | Vehicular lighting tool |
| JP2010500716A (en) * | 2006-08-09 | 2010-01-07 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Lighting fixture to be installed in the recess |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0635286Y2 (en) | 1994-09-14 |