JPH01211705A - Light source device for light emission body by optical fiber - Google Patents
Light source device for light emission body by optical fiberInfo
- Publication number
- JPH01211705A JPH01211705A JP3663388A JP3663388A JPH01211705A JP H01211705 A JPH01211705 A JP H01211705A JP 3663388 A JP3663388 A JP 3663388A JP 3663388 A JP3663388 A JP 3663388A JP H01211705 A JPH01211705 A JP H01211705A
- Authority
- JP
- Japan
- Prior art keywords
- light source
- optical fiber
- source device
- light
- tube body
- 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
- 239000013307 optical fiber Substances 0.000 title claims abstract description 32
- 239000000463 material Substances 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 2
- 229920003002 synthetic resin Polymers 0.000 claims description 2
- 239000000057 synthetic resin Substances 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 230000005855 radiation Effects 0.000 claims 1
- 238000004544 sputter deposition Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000004907 flux Effects 0.000 abstract description 2
- 230000017525 heat dissipation Effects 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 241000283707 Capra Species 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001635 magnesium fluoride Inorganic materials 0.000 description 1
- 238000005058 metal casting Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4298—Coupling light guides with opto-electronic elements coupling with non-coherent light sources and/or radiation detectors, e.g. lamps, incandescent bulbs, scintillation chambers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0005—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type
- G02B6/0006—Coupling light into the fibre
Abstract
Description
【発明の詳細な説明】
「産業上の利用分野」
この発明は、光く光学）ファイバーによる発光体の光源
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a light source device for a luminous body using a luminous optical fiber.
就中、照明および光による装飾体などに使用される光フ
ァイバー用の光源装置に関するものである。In particular, the present invention relates to a light source device for optical fibers used for illumination and light decorations.
「従来の技術Ｊ
従来において、導光のための光ファイバーの結束端面に
反射鏡やレンズ系を配置して、そこに光源である白熱電
球またはハロゲン電球などのフィラメント像を結はせる
ように、それらの反射鏡やレンズ系の幾何学的配置か行
われている。しかしなからこのような装置の欠点として
、
（１）光学的、幾何学的配置の位置決めの是非が微妙に
光の集束効率に影響する。``Prior Art J'' In the past, a reflector or lens system was placed on the end face of a bundle of optical fibers for guiding light, and the filament image of the light source, such as an incandescent bulb or a halogen bulb, was focused thereon. However, the disadvantages of such devices are (1) The pros and cons of the optical and geometrical arrangement slightly affect the light focusing efficiency. Affect.
（２）極く小径である光ファイバーの結束端面へ筋効率
的集光か困難である。(2) It is difficult to efficiently focus the light onto the bundled end face of the optical fiber, which has an extremely small diameter.
（３）とくにレンズ系での集光効率か良くないなどが挙
けられる。(3) In particular, the light collection efficiency of the lens system is not good.
「発明が解決しようとする課題」
上記従来技術の欠点を解消したところの、光源利用効率
の高く、シかも製作、調整の容易な光ファイバーによる
発光体の光源装置を提供することを目的とする。``Problems to be Solved by the Invention'' It is an object of the present invention to provide a light source device using an optical fiber, which eliminates the drawbacks of the prior art, has high light source utilization efficiency, and is easy to manufacture and adjust.
［課題を解決するための手段］
反射鏡またはレンズ系で集光した光束を、内壁を反則鏡
面加工した円錘管体の大径側から小径側へ導入収斂させ
、その小径側端に位置する光ファイバー結束端面に導入
するようにしたことを特徴とする光ファイバーによる発
光体の光源装置の構成とする。[Means for solving the problem] A light beam focused by a reflecting mirror or a lens system is introduced from the large diameter side to the small diameter side of a conical tube body whose inner wall is treated with a mirror finish, and is converged to be located at the end of the small diameter side. A light source device of a light emitter using an optical fiber is characterized in that it is introduced into an end face of an optical fiber bundle.
「作用」
半球形状の反射鏡ケース（２）内の反射鏡（２ａ）で集
光し、はぼ平行または収斂性となった光線およびそれ以
外の必要な放出光も全て円錘管体（５）の小径側へ誘導
反射収斂させて、光源り１）の発光量の大部分を小径側
にある光ファイバー結束部（７）の端面に投入すること
かできてきわめて効率的である。またレンズ系（３）を
採用した装置においても同様に、光源（’１）の発光量
の集光効率をさらに向上することができる。"Operation" The light is collected by the reflector (2a) in the hemispherical reflector case (2), and the almost parallel or convergent light rays and other necessary emitted light are also collected by the conical tube (5 ) is extremely efficient because most of the light emitted from the light source 1) can be directed to the end face of the optical fiber bundle (7) on the small diameter side. Similarly, in a device employing the lens system (3), the efficiency of condensing the amount of light emitted by the light source ('1) can be further improved.
またこのレンズ系（３）の背面に付設した反射カバー（
２”ａ）の、不規則な反射光もレンズ系（３）を通過し
た後、円錘管体（５）により小径側へ誘導収斂される。In addition, a reflective cover attached to the back of this lens system (3) (
After the irregular reflected light of 2"a) also passes through the lens system (3), it is guided and converged to the small diameter side by the conical tube body (5).
これらの装置によって、−本宛が一ミリ以下の小径の光
ファイバーを集めた光ファイバー結束部（７）、（７’
）端面に対しても、容易に大光量を効率的に集中投入す
ることかできる。With these devices, optical fiber bundles (7), (7'
) A large amount of light can be easily and efficiently concentrated into the end face.
「実施例」
第１図ａ、第１図すに示すのはこの発明の光ファイバー
による発光体の光源装置（Ｌ）てあって、半球状の反射
鏡ケース（２）に、円錘管体（５）がとりつけられ、第
１１１ｂに明らかなように、光源となる各種電球なとの
光源（１）［フィラメントなど］は半球形状の反射鏡（
２ａ）または後述のレンズ系（３）の焦点近傍に配置す
る。この反射鏡（２ａ）の場合、光源（１）からそのフ
ランジ部（Ｆ）まての立体角はなるべく２π（スデラジ
アン）以上として、光源（１）からの光束をできるだけ
有効に利用する第２図ａ、第２図す図示の光源装置（Ｌ
″）は、反射カバーケース（２“）内面に反射カバー（
２”ａ）を施し、レンズ系（３）を配置したものて、
このレンズ系（３）は球状に近い高屈折率の短焦点レン
スを用いるとよい。なおこの種の光ファイバーの材質は
一般にプラスチック材であり、それが熱線集中による過
度の昇温を避けるため、後述するような多重（多層）被
膜コーチインク処理層（３′）をレンズ系（３）に施し
て赤外線を反射阻止することが望ましい。``Example'' Figures 1a and 1s show a light source device (L) for a light emitting body using an optical fiber according to the present invention, in which a conical tube body ( 5) is attached, and as is clear from No. 111b, the light source (1) [filament, etc.], such as various light bulbs, is a hemispherical reflecting mirror (
2a) or near the focal point of the lens system (3) described later. In the case of this reflecting mirror (2a), the solid angle from the light source (1) to its flange (F) is set to be at least 2π (Sderadian) as much as possible to utilize the luminous flux from the light source (1) as effectively as possible. a. The light source device shown in Figure 2 (L
″) has a reflective cover (2″) on the inside of the reflective cover case (2″).
2”a) and the lens system (3) is arranged,
As this lens system (3), it is preferable to use a short focal length lens having a nearly spherical shape and a high refractive index. The material of this type of optical fiber is generally a plastic material, and in order to avoid excessive temperature rise due to concentration of heat rays, a multi-coated coach ink treatment layer (3') as described below is applied to the lens system (3). It is desirable to apply the coating to prevent infrared rays from being reflected.
そして前記第１図ｂ、第２図すに示すように内面に反射
鏡面加工層（４）［研磨、めっき、アルミニウムその他
の真空蒸着またはスパッタリンクな、と］を施した円錘
管体（５）の大径側を、反射鏡ケへ
一′−ス（２）のフランジ（Ｆ）の外径部［もしくはレ
ンズ系（３）の口径および反射カバーケース（２′）の
外径部］に合わせて嵌接させる。 （ｐ）はバッキング
を示す。円錘管体（５）の小径側には、光ファイ定する
。As shown in FIG. 1b and FIG. 2, the conical tube body (5 ) to the outer diameter of the flange (F) of the reflector case (2) [or the aperture of the lens system (3) and the outer diameter of the reflector cover case (2')]. Fit them together. (p) indicates backing. An optical fiber is installed on the small diameter side of the conical tube body (5).
ここで円錘管体（５）の形状と、内面光輝仕上けにはと
くに光学的精度は要しないか、反射効率には充分留意す
る。Here, sufficient attention should be paid to the shape of the conical tube body (5) and whether particular optical precision is required for the bright finish on the inner surface, and to the reflection efficiency.
円錘管体（５）の構成材としては放熱を考慮して、アル
ミニウム、亜鉛その他の金属鋳造品、耐熱用スーパーエ
ンジニアリングプラスチックスなとの耐熱性合成樹脂材
の射出成形品、セラミックス成形品かよい。さらに内面
に赤外線部透過用多層液ＩＨ！コーチインク処理を施し
た耐熱カラス成形品てあれは一層有効である。この多層
被膜コーチインク処理はたとえは、ＭｇＦ２． ｌｎＳ
あるいはＴｉＯ□。Considering heat dissipation, the conical tube body (5) may be made of aluminum, zinc or other metal castings, injection molded products of heat-resistant synthetic resin materials such as heat-resistant super engineering plastics, or ceramic molded products. . Furthermore, there is a multilayer liquid IH for transmitting infrared light on the inside! Heat-resistant glass molded products treated with coach ink are even more effective. This multilayer coating coach ink treatment is similar to MgF2. lnS
Or TiO□.
５ｉ（１２なとの金属酸化物の薄層を真空蒸着なとのく
、、：葭＞を選択的に透過または反射させる特異な機能
を有するものである。A thin layer of metal oxide such as 5i (12) is vacuum-deposited and has a unique function of selectively transmitting or reflecting light.
この円錘管体（５）の外表面は、複数個のフィン（６）
を張設して空冷放熱効果を行う。なお要すれは別設のマ
イクロファンを併用すれは放熱上万全である。The outer surface of this conical tube body (5) has a plurality of fins (6).
is installed to provide air cooling and heat dissipation effect. In addition, it is best to use a separate micro fan for heat dissipation.
前述のように円錘管体（５）の形状の光学的精度は緩や
かであるから、たとえは円錘管体（５）を縦７、つ割り
なとの分割構造として製作、組立ての容易化を図るとよ
い。As mentioned above, the optical precision of the shape of the conical tube body (5) is moderate, so for example, the conical tube body (5) can be made into a structure divided into 7 parts vertically and 7 halves to facilitate assembly. It is a good idea to aim for this.
なお前述の反射鏡ケース（２）、反射カバーケース（２
′）の構成材についても前記円錘管体（５）と同様の材
質をもって構成することか有効である。In addition, the above-mentioned reflector case (2) and reflector cover case (2)
It is also effective to use the same material as the conical tube body (5) for the constituent material of the conical tube body (5).
第３図は光ファイバー結束部（７）に、面発光体（Ａ）
［前記結束した光ファイバーの延長部分を平面状に並べ
、その一部に粗面（Ｊ）を施して、そこより光か面状に
発するようにした装飾表示体１を繋いた例を示すもので
、 この発明の光源装Ｗ （＋−） 。Figure 3 shows a surface light emitter (A) attached to the optical fiber bundle (7).
[This is an example in which the extended portions of the bundled optical fibers are arranged in a plane, a part of which is provided with a rough surface (J), and a decorative display body 1 is connected from which light is emitted in a planar shape. , the light source device W (+-) of this invention.
同（Ｌ’）を用いるのに好適である。It is suitable to use the same (L').
第４図は第３図と同様の面発光体＜Ａ）の両側に、たと
えは二基の光源装置（Ｌ）、同（［、）を配置し、それ
らの光ファイバー結束部（７）、同（７゛）、カプラ（
８）、同（８′）を繋いだ例をンＪ〈ず。In Figure 4, for example, two light source devices (L) and the same ([,) are arranged on both sides of a surface light emitter <A) similar to that in Figure 3, and their optical fiber bundles (7) and the same (7゛), coupler (
8) and an example of connecting the same (8').
第５図は面発光体（Ａ）の両側に設けた光ファイバー結
束部（７）、同（７゛）を−基の光源装置（Ｉ、）のカ
プラ（８）に繋いた例である。FIG. 5 shows an example in which the optical fiber bundles (7) provided on both sides of the surface light emitter (A) are connected to the coupler (8) of the base light source device (I,).
「発明の効果」
■この発明の光ファイバーによる発光体の光源装置は反
射鏡、反射カバーなとを有する反射鏡ケース、反射カバ
ーケースに、反射鏡面別下層を内面に有する円錘管体を
組み合わせた構成によって、光源の利用効率かきわめて
よくなる。"Effects of the Invention" ■The light source device of the light emitter using optical fiber of this invention combines a reflective mirror case having a reflective mirror, a reflective cover, etc., a reflective cover case, and a conical tube body having a lower layer with a separate reflective mirror surface on the inner surface. Depending on the configuration, the efficiency of light source use can be extremely high.
■ そのような装置の調整は容易であり、設計製作上有
利で容易である。■ Adjustment of such a device is easy, and it is advantageous and easy to design and manufacture.
■ レンズ系の効率も向上する。■ The efficiency of the lens system is also improved.
■ 放熱性が良好である。■ Good heat dissipation.
これらによって希望する小面積の光ファイバー結束部端
面ｌ＼光量を効率的に絞り込むことができる。By these means, it is possible to efficiently narrow down the desired amount of light at the end face l\ of the optical fiber bundle in a small area.
【図面の簡単な説明】
第１図ａはこの発明の光ファイバーによる発光体の光源
装置の組立前の外観図、
第１１図すは第１図の組立後の縦断面図、第２図ａはこ
の発明の光ファイバーによる発光体の光源装置の他の例
の組立前の外観図、第２ ｌ’３ ｂは第２図ａの組立
後の縦断面図、第３図はこの発明の光ファイバーによる
発光体の光源装置を適用する面発光体の正面図、第・１
図は同ｊ７＜この発明の光ファイバーによる発光体の光
源装置を適用する他の例の面発光体の正面図、
第５し１は同しくこの発明の光ファイバーによる発光体
の光源装置を適用するさらに他の例の面発光体の正面図
である。
（Ｌ）、（Ｌ“）・・・・・光源装置
（１）・・・光源 （２） 反射鏡ケー
ス（２ａ） 反射鏡 （２′）・ 反射カバー
ケース（２’ａ） 反射カバー （３） レン
ズ系（３°）・・・・多重（多層）被膜コーティング処
理層（４） 反射鏡面加工８４ （５＞ ・
円錘管体（７）、（７°） 光ファイバー結束部（
８）、（８″）・ カプラ
特許出願人 サカエ理研−Ｌ業株式会社代理人 弁理
士 松 永 善 蔵
ｒ１
晃３図
Ｊ′
晃４図
第５図[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1a is an external view of a light source device of a light emitting body using optical fibers of the present invention before assembly, Fig. 11 is a vertical cross-sectional view of Fig. 1 after assembly, and Fig. 2a is a An external view before assembly of another example of a light source device of a light emitting body using an optical fiber of this invention, 2 l'3 b is a vertical sectional view after assembly of FIG. 2 a, and FIG. Front view of a surface light emitter to which a body light source device is applied, Part 1
Figure 5-1 is a front view of another example of a surface light emitter to which the light source device for a light emitter using optical fibers of the present invention is applied; It is a front view of the surface light emitter of another example. (L), (L")...Light source device (1)...Light source (2) Reflector case (2a) Reflector (2')/Reflector cover case (2'a) Reflector cover (3 ) Lens system (3°)...Multi-layer coating treatment layer (4) Reflective mirror finishing 84 (5> ・
Conical tube body (7), (7°) Optical fiber bundle (
8), (8″) Capra Patent Applicant Sakae Riken-L-Gyo Co., Ltd. Agent Patent Attorney Yoshizo Matsunaga r1 Ko 3 Figure J' Ko 4 Figure 5
Claims (1)
射鏡面加工した円錘管体の大径側から小径側へ導入収斂
させ、その小径側端に位置する光ファイバー結束部端面
に導入するようにしたことを特徴とする光ファイバーに
よる発光体の光源装置。 ２ 反射鏡面仕上げを内壁に施した反射鏡ケースを設け
たことを特徴とする請求項１記載の光ファイバーによる
発光体の光源装置。 ３ レンズ系の背後に反射表面仕上げを内壁に施した反
射カバーケースを設けたことを特徴とする請求項１記載
の光ファイバーによる発光体の光源装置。 ４ 円錘管体または反射鏡ケース、反射カバーケースは
金属、セラミックス、耐熱性合成樹脂材、または耐熱ガ
ラス成形品よりなる請求項１記載の光ファイバーによる
発光体の光源装置。 ５ 耐熱ガラス成形品に赤外線に対する選択的透過また
は反射性を付与する多層コーティング処理を施したこと
を特徴とする請求項４記載の光ファイバーによる発光体
の光源装置。 ６ 反射鏡および反射カバー面は、めっき、真空蒸着、
スパッタリングなどによる鏡面仕上げ処理を施したこと
を特徴とする請求項１記載の光ファイバーによる発光体
の光源装置。 ７ 円錘管体外面に複数個の放熱フィンを立設したこと
を特徴とする請求項１記載の光ファイバーによる発光体
の光源装置。[Claims] 1. A light beam condensed by a reflecting mirror or a lens system is introduced from the large-diameter side to the small-diameter side of a conical tube body whose inner wall is polished to a reflective mirror surface, and is converged into an optical fiber bundle located at the small-diameter end of the conical tube body. 1. A light source device for a luminous body using an optical fiber, characterized in that the light source is introduced into the end face of the part. 2. The light source device for a light emitter using an optical fiber according to claim 1, further comprising a reflective mirror case whose inner wall is finished with a reflective mirror surface. 3. The light source device for a light emitting body using an optical fiber according to claim 1, further comprising a reflective cover case whose inner wall is provided with a reflective surface finish behind the lens system. 4. The light source device for a luminous body using an optical fiber according to claim 1, wherein the conical tube body, the reflecting mirror case, and the reflecting cover case are made of metal, ceramics, heat-resistant synthetic resin material, or heat-resistant glass molded product. 5. The light source device of a luminous body using an optical fiber according to claim 4, wherein the heat-resistant glass molded product is subjected to a multilayer coating treatment that imparts selective transmission or reflection to infrared rays. 6 The reflective mirror and reflective cover surfaces are plated, vacuum deposited,
2. The light source device of a light emitting body using an optical fiber according to claim 1, wherein the light source device is subjected to a mirror finish treatment by sputtering or the like. 7. The light source device for a light emitter using an optical fiber according to claim 1, characterized in that a plurality of radiation fins are erected on the outer surface of the conical tube body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3663388A JPH01211705A (en) | 1988-02-19 | 1988-02-19 | Light source device for light emission body by optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3663388A JPH01211705A (en) | 1988-02-19 | 1988-02-19 | Light source device for light emission body by optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01211705A true JPH01211705A (en) | 1989-08-24 |
Family
ID=12475241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3663388A Pending JPH01211705A (en) | 1988-02-19 | 1988-02-19 | Light source device for light emission body by optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01211705A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0342103U (en) * | 1989-08-31 | 1991-04-22 | ||
| JPH0550415U (en) * | 1991-12-10 | 1993-07-02 | 大阪瓦斯株式会社 | Light source |
| US5515242A (en) * | 1994-10-03 | 1996-05-07 | Ford Motor Company | Double confocal fiber optic light collector |
| EP0764862A1 (en) * | 1995-09-20 | 1997-03-26 | General Electric Company | Compact optical coupling systems |
| EP0900979A1 (en) * | 1997-09-05 | 1999-03-10 | Francisco Sanchez Navarro | Lighting system |
| US7111962B2 (en) | 2003-03-25 | 2006-09-26 | Seiko Epson Corporation | Light source and projector |
| US7178948B2 (en) | 2004-08-17 | 2007-02-20 | Hewlett-Packard Development Company, L.P. | Light collection system |
| EP2378323A3 (en) * | 2010-03-31 | 2012-08-29 | Koito Manufacturing Co., Ltd. | Vehicle lamp |
| US8632232B2 (en) | 2010-03-31 | 2014-01-21 | Koito Manufacturing Co., Ltd. | Vehicular headlamp having a columnar light guide |
| JP2017515156A (en) * | 2014-04-29 | 2017-06-08 | コーニング インコーポレイテッド | Optical connector for coupling light source to optical fiber |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5852506B2 (en) * | 1977-07-20 | 1983-11-22 | 株式会社日立製作所 | image recording device |
-
1988
- 1988-02-19 JP JP3663388A patent/JPH01211705A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5852506B2 (en) * | 1977-07-20 | 1983-11-22 | 株式会社日立製作所 | image recording device |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0342103U (en) * | 1989-08-31 | 1991-04-22 | ||
| JPH0550415U (en) * | 1991-12-10 | 1993-07-02 | 大阪瓦斯株式会社 | Light source |
| US5515242A (en) * | 1994-10-03 | 1996-05-07 | Ford Motor Company | Double confocal fiber optic light collector |
| EP0764862A1 (en) * | 1995-09-20 | 1997-03-26 | General Electric Company | Compact optical coupling systems |
| US5692091A (en) * | 1995-09-20 | 1997-11-25 | General Electric Company | Compact optical coupling systems |
| EP0900979A1 (en) * | 1997-09-05 | 1999-03-10 | Francisco Sanchez Navarro | Lighting system |
| US7111962B2 (en) | 2003-03-25 | 2006-09-26 | Seiko Epson Corporation | Light source and projector |
| US7178948B2 (en) | 2004-08-17 | 2007-02-20 | Hewlett-Packard Development Company, L.P. | Light collection system |
| EP2378323A3 (en) * | 2010-03-31 | 2012-08-29 | Koito Manufacturing Co., Ltd. | Vehicle lamp |
| US8632232B2 (en) | 2010-03-31 | 2014-01-21 | Koito Manufacturing Co., Ltd. | Vehicular headlamp having a columnar light guide |
| JP2017515156A (en) * | 2014-04-29 | 2017-06-08 | コーニング インコーポレイテッド | Optical connector for coupling light source to optical fiber |
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