JPH0241122B2 - - Google Patents
Info
- Publication number
- JPH0241122B2 JPH0241122B2 JP61034184A JP3418486A JPH0241122B2 JP H0241122 B2 JPH0241122 B2 JP H0241122B2 JP 61034184 A JP61034184 A JP 61034184A JP 3418486 A JP3418486 A JP 3418486A JP H0241122 B2 JPH0241122 B2 JP H0241122B2
- Authority
- JP
- Japan
- Prior art keywords
- light
- mirror
- shielding plate
- image
- reflective surface
- 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.)
- Expired - Lifetime
Links
Landscapes
- Supplying Of Containers To The Packaging Station (AREA)
- Vehicle Body Suspensions (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Description
【発明の詳細な説明】
（技術分野）
本発明は、反射面による結像（プロジエクター
の原理）を利用した照明装置に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to an illumination device that utilizes image formation by a reflective surface (projector principle).
（従来技術）
例えば、第２図に示すように楕円の第１の焦点
F1の光源１から出た光を反射鏡２で反射させ、
第２の焦点F2に集中させた後、凸レンズ３で平
行光線にする際、焦点近傍に遮光板４を配置する
と、その投影像が明瞭となる。これをヘツドラン
プに適用し遮光板４のエツジラインをすれ違いビ
ームのカツトオフラインとすれば、そのエツジラ
インの形状の選定により任意の配光パターンが得
られる。(Prior art) For example, as shown in FIG.
The light emitted from light source 1 of F 1 is reflected by reflector 2,
After concentrating on the second focus F2 , when converting the light into parallel light using the convex lens 3, if a light shielding plate 4 is placed near the focus, the projected image will become clear. If this is applied to a headlamp and the edge line of the light shielding plate 4 is used as the cutoff line of the passing beam, an arbitrary light distribution pattern can be obtained by selecting the shape of the edge line.
しかし、第３図の構成では、凸レンズ３の屈折
を利用しているため、光源１から出る光の波長の
違いによつて屈折方向が異なつて虹色の光が生じ
るようになり、これを防止するための色消しレン
ズが必要となる。また、凸レンズ３のコストが非
常に高くなるといつた問題点がある。 However, in the configuration shown in Fig. 3, since the refraction of the convex lens 3 is used, the refraction direction changes depending on the wavelength of the light emitted from the light source 1, resulting in rainbow-colored light, which can be prevented. You will need an achromatic lens for this purpose. Another problem is that the cost of the convex lens 3 becomes extremely high.
（発明の目的）
本発明の目的は、低コストで明暗境界線が明確
な配光パターンを得ることができる照明装置を提
供することにある。(Object of the Invention) An object of the present invention is to provide a lighting device that can obtain a light distribution pattern with clear bright and dark boundaries at low cost.
（発明の概要）
本発明は、光源から出た光を２次曲面の反射面
を持つリフレクターで反射させて照射光とし、２
次曲面の反射面を有する結像用の反射鏡とこの結
像用の反射鏡とその焦点の間に配置された２次曲
面の反射面を持つ焦点距離調整用のミラーとの合
成焦点上またはその近傍に配置した配光パターン
形成部材の像を前記照射光により投影し、前記結
像用の反射鏡の反射で結像させるようにしたこと
を特徴とするものである。(Summary of the Invention) The present invention reflects light emitted from a light source with a reflector having a reflective surface of a quadratic curved surface to produce irradiation light.
On the composite focal point of an imaging reflecting mirror having a reflecting surface of a quadratic curved surface and a focal length adjustment mirror having a reflecting surface of a quadratic curved surface placed between the imaging reflecting mirror and its focal point, or An image of a light distribution pattern forming member disposed in the vicinity thereof is projected by the irradiation light, and the image is formed by reflection from the image forming reflecting mirror.
（実施例）
第１図は本発明の一実施例を示すもので、１１
は光源、１２は所要の配光パターンの照射光を作
るためのリフレクター、１３は遮光板、１４は焦
点距離調整用のミラー、１５は結像用のミラーで
あり、本実施例では、ミラー１４として回転双曲
面鏡、ミラー１５として球面（凹面）鏡を用いて
いる。(Example) Figure 1 shows an example of the present invention.
12 is a light source, 12 is a reflector for producing irradiation light with a required light distribution pattern, 13 is a light shielding plate, 14 is a mirror for adjusting the focal length, and 15 is a mirror for imaging. In this embodiment, the mirror 14 As the mirror 15, a rotating hyperboloid mirror is used, and as the mirror 15, a spherical (concave) mirror is used.
前記リフレクター１２、球面鏡１５及び回転双
曲面鏡１４は同一光軸上に配置している。リフレ
クター１２は回転楕円面の反射面を有しており、
その焦点E1、E2の一方の焦点E1に前記光源１１
を配置している。前記球面鏡１５はその中央部に
切欠き（透光部）を有しており、この球面鏡１５
の反射面側に回転双曲面鏡１４をその突面の反射
面が球面鏡１５と対向するように配置している。
回転双曲面鏡１４は第１、第２の焦点F1、F2を
有し、その第１の焦点F1上またはその近傍に前
記遮光板１３を配置し、また第２の焦点F2を球
面鏡１５の焦点と一致させている。 The reflector 12, the spherical mirror 15, and the rotating hyperboloid mirror 14 are arranged on the same optical axis. The reflector 12 has a spheroidal reflecting surface,
The light source 11 is located at one of the focal points E 1 and E 2 .
are placed. The spherical mirror 15 has a notch (light-transmitting part) in its center.
A rotating hyperboloid mirror 14 is arranged on the reflective surface side of the mirror 14 so that its projecting reflective surface faces the spherical mirror 15.
The rotating hyperboloid mirror 14 has first and second focal points F 1 and F 2 , and the light shielding plate 13 is disposed on or near the first focal point F 1 , and the second focal point F 2 is disposed on or near the first focal point F 1 . The focus is made to coincide with the focus of the spherical mirror 15.
なお、１６は保護用のカバーレンズで、別の手
段で保護ができれば省略可能である。また、この
レンズ１６にプリズムカツトを施して配光調整を
行うようにしてもよい。 Note that 16 is a cover lens for protection, which can be omitted if protection can be provided by other means. Further, the lens 16 may be provided with a prism cut to adjust the light distribution.
上記のような構成とすると、光源１１から出た
光はリフレクター１２で反射して前方に進み、遮
光板１３を照射する。この照射光により遮光板１
３の像が投影され、回転双曲面鏡１４及び球面鏡
１５での反射により明瞭に結像される。この結
果、遮光板１３のエツジライン１３Ａが明瞭とな
り、例えば自動車のヘツドランプに応用した場合
には、遮光板１３のエツジライン１３Ａはすれ違
いビームにおけるカツトオフラインとなつて、明
暗境界線が明瞭なすれ違いビーム配光パターンが
得られる。しかも、エツジラインは所望の形状に
設定可能であるので、種々のすれ違いビーム配光
パターンを得ることができる。 With the above configuration, the light emitted from the light source 11 is reflected by the reflector 12, travels forward, and illuminates the light shielding plate 13. This irradiation light causes the light shielding plate 1 to
3 is projected and clearly formed by reflection from the rotating hyperboloid mirror 14 and the spherical mirror 15. As a result, the edge line 13A of the light-shielding plate 13 becomes clear. For example, when applied to an automobile headlamp, the edge line 13A of the light-shielding plate 13 becomes a cut-off line in the passing beam, and the light-dark boundary line is clearly defined in the passing-beam distribution. A pattern is obtained. Moreover, since the edge line can be set to a desired shape, various passing beam light distribution patterns can be obtained.
投影像の大きさ、つまり配光パターンの広がり
は、遮光板１３に照射される光の照射面の大きさ
と球面鏡１５の焦点距離による拡大率で決まる。
従つて、遮光板に照射される光の照射面の大きさ
と光量が確保できれば、リフレクター１２の反射
面の曲面はどのような形状でもよいことになる。 The size of the projected image, that is, the spread of the light distribution pattern, is determined by the size of the irradiation surface of the light irradiated onto the light shielding plate 13 and the magnification rate depending on the focal length of the spherical mirror 15.
Therefore, the curved surface of the reflector 12 may have any shape as long as the size of the irradiation surface and the amount of light irradiated onto the light shielding plate can be secured.
なお、遮光板１３を除去することにより、走行
ビーム配光パターンを得ることもできる。また、
ミラー１４，１５は図示例以外の２次曲面でもよ
い。 Note that by removing the light shielding plate 13, a traveling beam light distribution pattern can also be obtained. Also,
The mirrors 14 and 15 may be quadratic curved surfaces other than the illustrated example.
（発明の効果）
以上のように本発明によれば、プロジエクター
の原理を利用し遮光板の像を投影して所望の配光
パターンを得る際、光の反射のみを使用している
ので、波長の違いによる虹の発生がなく、良好な
配光パターンを低コストで実現できる。また、遮
光板のエツジラインを明瞭に投影できるため、ヘ
ツドランプに応用した場合、カツトオフラインが
はつきりしたすれ違いビーム配光パターンを得る
ことができる。更に、結像用の反射鏡の焦点距離
を焦点距離調整用のミラーにて任意に設定できる
ため奥行寸法の短縮が可能となる。(Effects of the Invention) As described above, according to the present invention, when obtaining a desired light distribution pattern by projecting an image of a light shielding plate using the principle of a projector, only reflection of light is used. There is no rainbow caused by differences in wavelength, and a good light distribution pattern can be achieved at low cost. Furthermore, since the edge line of the light shielding plate can be clearly projected, when applied to a headlamp, a passing beam light distribution pattern with a sharp cutoff line can be obtained. Furthermore, since the focal length of the imaging reflecting mirror can be arbitrarily set using the focal length adjusting mirror, the depth dimension can be shortened.
第１図は本発明に係る照明装置の一実施例を示
す断面図、第２図は従来例の構成説明図である。
１１……光源、１２……リフレクター、１３…
…遮光板、１３Ａ……エツジライン、１４……回
転双曲面鏡、１５……球面鏡、１６……保護用の
カバーレンズ。
FIG. 1 is a sectional view showing an embodiment of a lighting device according to the present invention, and FIG. 2 is a diagram illustrating the configuration of a conventional example. 11...Light source, 12...Reflector, 13...
... Light shielding plate, 13A ... Edge line, 14 ... Rotating hyperboloid mirror, 15 ... Spherical mirror, 16 ... Protective cover lens.
Claims (1)
フレクターで反射させて照射光とし、２次曲面の
反射面を有する結像用の反射鏡とこの結像用の反
射鏡とその焦点の間に配置された２次曲面の反射
面を持つ焦点距離調整用のミラーとの合成焦点上
またはその近傍に配置した配光パターン形成部材
の像を前記照射光により投影し、前記結像用の反
射鏡の反射で結像させるようにしたことを特徴と
する照明装置。1 The light emitted from the light source is reflected by a reflector with a reflective surface of a quadratic curved surface to become irradiation light, and an imaging mirror with a reflective surface of a quadratic curved surface is used. The irradiation light projects an image of a light distribution pattern forming member placed on or near the composite focal point of a focal length adjustment mirror having a quadratic reflective surface placed between them, and An illumination device characterized in that an image is formed by reflection from a reflecting mirror.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3418486A JPS62193008A (en) | 1986-02-19 | 1986-02-19 | lighting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3418486A JPS62193008A (en) | 1986-02-19 | 1986-02-19 | lighting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62193008A JPS62193008A (en) | 1987-08-24 |
| JPH0241122B2 true JPH0241122B2 (en) | 1990-09-14 |
Family
ID=12407109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3418486A Granted JPS62193008A (en) | 1986-02-19 | 1986-02-19 | lighting equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62193008A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06311039A (en) * | 1993-04-21 | 1994-11-04 | Nippon Philips Kk | Digital-analog converter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2578955B1 (en) * | 1985-03-14 | 1987-04-03 | Cibie Projecteurs | MOTOR VEHICLE PROJECTOR INCORPORATING A PARABOLIC REFLECTOR AND AN ELLIPTICAL REFLECTOR |
-
1986
- 1986-02-19 JP JP3418486A patent/JPS62193008A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62193008A (en) | 1987-08-24 |
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