JPH038201A - Light projector - Google Patents
Light projectorInfo
- Publication number
- JPH038201A JPH038201A JP14032289A JP14032289A JPH038201A JP H038201 A JPH038201 A JP H038201A JP 14032289 A JP14032289 A JP 14032289A JP 14032289 A JP14032289 A JP 14032289A JP H038201 A JPH038201 A JP H038201A
- Authority
- JP
- Japan
- Prior art keywords
- light
- light source
- source lamp
- pipe
- light flux
- 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
- 230000004907 flux Effects 0.000 claims description 12
- 230000005855 radiation Effects 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 238000005286 illumination Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
Landscapes
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
物
本発明は、゛透光器、特に光源ランプから放射状に照射
され夜間の車輛操縦用や照明用などに使用光される光束
密度は小さくなり、光源ランプからの照射光束の利用効
率が非常に悪いため一定規格下での視野が狭くなったり
照度が低くなるという欠点があった。[Detailed Description of the Invention] [Industrial Field of Application] The present invention is directed to ``a translucent device, particularly a light source lamp that emits light radially and used for night vehicle operation, lighting, etc. The luminous flux density is small. However, since the utilization efficiency of the irradiated light beam from the light source lamp is very poor, the field of view becomes narrow under certain standards, and the illuminance becomes low.
射される光束を理論上−点に集光する仮想光輝度〔実施
例〕
次に、本発明の実施例について、図面を参照して説明す
る。Virtual luminance that theoretically condenses the emitted light beam onto a point [Example] Next, an example of the present invention will be described with reference to the drawings.
第１図は本発明の一実施例を示す断面図である。FIG. 1 is a sectional view showing one embodiment of the present invention.
↑７
第１図に示す透′光器は、光源ランプｌから放物面反射
鏡２へ進む光線ａは大部分は反射されて光軸に平行に進
み、ライトパイプ３のテーバ付壁面で多重反射されライ
トパイプ３のオリフィス部を通る。↑7 In the translucent device shown in Fig. 1, the light ray a that travels from the light source lamp l to the parabolic reflector 2 is mostly reflected and travels parallel to the optical axis, and is multiplexed on the tapered wall of the light pipe 3. It is reflected and passes through the orifice of the light pipe 3.
また、光源ランプ１から放物面反射鏡２へ進む光線ａの
残りの部分および光源ランプ１からライトパイプ３の壁
面へ進む光線すはライトパイプ３と放物面反射鏡２で囲
まれた空間をストレー状になって多重反射を繰返し、最
終的にライトパイプ３のオリフィス部を通過する。The remaining part of the light ray a that travels from the light source lamp 1 to the parabolic reflector 2 and the light ray that travels from the light source lamp 1 to the wall of the light pipe 3 are the space surrounded by the light pipe 3 and the parabolic reflector 2. The light becomes a stray light, undergoes multiple reflections, and finally passes through the orifice of the light pipe 3.
斯くして、光源ランプ１からの放射光束はライトパイプ
３のオリフィス部から半空間に向って進む放射光束にな
るが、その一部をライトパイプ３の先端部で反射させ立
体角の減少した光束１０３を得る。In this way, the emitted light flux from the light source lamp 1 becomes a emitted light flux that travels toward the half space from the orifice of the light pipe 3, but a part of it is reflected at the tip of the light pipe 3, resulting in a light flux with a reduced solid angle. Get 103.
一方、放射レンズ４は光束１０３を殆んど平行光束に変
換するため、長焦点距離を有し、焦点深度が大きくなる
ように設計される。On the other hand, the radiation lens 4 is designed to have a long focal length and a large depth of focus in order to convert most of the light beam 103 into a parallel light beam.
上述の実施例では、反射鏡として放物面反射鏡の例につ
いて述べたが、これに限定されるものではない。例えば
球面反射鏡であってもよい。In the above-mentioned embodiment, an example of a parabolic reflecting mirror was described as the reflecting mirror, but the invention is not limited to this. For example, it may be a spherical reflecting mirror.
操
本発明の彊光器は、光源からの光束の反射損失７
や透過損失を無視すれば理論上１００％緻する１ツ７
ことが可能であるため、！光輝度が上昇し、物体の照度
が増大するという効果がある。The optical device of the present invention can theoretically be 100% dense if reflection loss and transmission loss of the light beam from the light source are ignored! This has the effect of increasing the light brightness and increasing the illuminance of the object.
また、放射レンズをヘリコイド等で前後に可動In addition, the radiation lens can be moved back and forth using a helicoid, etc.
【図面の簡単な説明】
第１図は本発明の一実施例を示す断面図である。
１゛°°°°光源ランプ、２・・・・・・放物面反射鏡
、３・・・・・・ライトパイプ、４・・・・・放射レン
ズ、ａ、ｂ・・・・・・光線、Ｃ・・・・光束。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing one embodiment of the present invention. 1゛°°°°Light source lamp, 2... Parabolic reflector, 3... Light pipe, 4... Radiation lens, a, b... Ray, C... Luminous flux.
Claims (1)
らの光束を平行光束に変換するとともに他の入射光束を
単純に反射するための放物面および球面のいずれかの反
射鏡と、前記光源ランプからの直射光束および前記反射
鏡からの反射光束を集光し有限の立体角を有する光束を
作るためのライトパイプと、前記ライトパイプを通過し
た光束を所望の距離に所望の立体角で投光するための放
射レンズとを含むことを特徴とする投光器。A light source lamp as a brightness emitter, a parabolic or spherical reflecting mirror for converting the light flux from the light source lamp into a parallel light flux and simply reflecting other incident light fluxes, and the light source lamp a light pipe for condensing the direct light flux from the reflector and the reflected light flux from the reflecting mirror to create a light flux having a finite solid angle, and projecting the light flux passing through the light pipe at a desired distance at a desired solid angle. A projector characterized in that it includes a radiation lens for illumination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14032289A JPH038201A (en) | 1989-06-01 | 1989-06-01 | Light projector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14032289A JPH038201A (en) | 1989-06-01 | 1989-06-01 | Light projector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH038201A true JPH038201A (en) | 1991-01-16 |
Family
ID=15266121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14032289A Pending JPH038201A (en) | 1989-06-01 | 1989-06-01 | Light projector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH038201A (en) |
-
1989
- 1989-06-01 JP JP14032289A patent/JPH038201A/en active Pending
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