JPH01183001A - Light source device - Google Patents
Light source deviceInfo
- Publication number
- JPH01183001A JPH01183001A JP229788A JP229788A JPH01183001A JP H01183001 A JPH01183001 A JP H01183001A JP 229788 A JP229788 A JP 229788A JP 229788 A JP229788 A JP 229788A JP H01183001 A JPH01183001 A JP H01183001A
- Authority
- JP
- Japan
- Prior art keywords
- light
- fiber
- discharge lamp
- focal point
- diameter
- 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
- 239000000835 fiber Substances 0.000 claims abstract description 62
- 230000003287 optical effect Effects 0.000 abstract description 7
- 239000013307 optical fiber Substances 0.000 abstract 5
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- VSQYNPJPULBZKU-UHFFFAOYSA-N mercury xenon Chemical compound [Xe].[Hg] VSQYNPJPULBZKU-UHFFFAOYSA-N 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel 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
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4206—Optical features
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、顕微鏡、内視鏡、あるいは紫外線照射装置な
どに用いられる光源装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a light source device used in a microscope, an endoscope, an ultraviolet irradiation device, or the like.
顕微鏡、内視鏡などに用いられる光源装置には、内蔵ラ
ンプとして放電灯が良く用いられている。Discharge lamps are often used as built-in lamps in light source devices used in microscopes, endoscopes, and the like.
放電灯のうちキセノンショートアークランプ、水銀キセ
ノンランプ、超高圧水銀ランプ、メタルハライドランプ
などのショートアークギャップを有する放電灯は、輝度
９色温度か高いことから特に適している。Among discharge lamps, discharge lamps having a short arc gap, such as xenon short arc lamps, mercury xenon lamps, ultra-high pressure mercury lamps, and metal halide lamps, are particularly suitable because of their brightness and high color temperature.
しかしながら、ショートアークギャップを有する放電灯
は、これからの光を所定径以下に集光させて光密度を高
めるのが難かしいという問題があった。特に放電灯から
の光を集光し、集光された光をファイバによって案内し
ようとする場合、ファイバ径が細いと集光された光の一
部しかファイバ内に導入されず、光量の損失か大きいと
いう問題があった。However, a discharge lamp having a short arc gap has a problem in that it is difficult to condense future light to a predetermined diameter or less to increase light density. In particular, when trying to condense light from a discharge lamp and guide the condensed light through a fiber, if the fiber diameter is small, only a portion of the condensed light will be introduced into the fiber, resulting in a loss of light quantity. The problem was that it was big.
本発明は、ショートアーク、ギャップを有する放電灯か
らの光を高い、光密度で集光させ、さらにファイバ径か
集光径よりも小さい場合でも光量の損失を少なくしうる
光源装置を提供することを目的とし、ている。An object of the present invention is to provide a light source device that can condense light from a discharge lamp having a short arc or a gap with high light density, and can further reduce the loss of light amount even when the fiber diameter is smaller than the condensing diameter. It is an object.
本発明は、ショートアークキャップを有する放電灯と、
放電灯からの光を反射し集光させる楕円面反射鏡と、集
光した光を案内するファイバ部とを備え、前記放電灯は
、前記楕円面反射鏡の輪郭を形成する楕円面の第１焦点
の近傍に配置され、前記ファイバ部の入射端は、前記楕
円面の第２焦点の近傍に配置され、前記ファイバ部は、
ファイバ本体と、入射端側に位置し前記ファイバ本体と
接続されるテーパ部とを有していることを特徴とする光
源装置によって、上記従来技術の問題点を改善するもの
である。The present invention provides a discharge lamp having a short arc cap;
The discharge lamp includes an ellipsoidal reflector that reflects and condenses light from the discharge lamp, and a fiber section that guides the condensed light. the fiber section is disposed near a focal point, the input end of the fiber section is disposed near a second focal point of the ellipsoid, and the fiber section
The problems of the prior art described above are improved by a light source device characterized by having a fiber body and a tapered portion located on the incident end side and connected to the fiber body.
本発明では、ショートアークギャップを有する放電灯か
らの光を楕円面反射鏡で反射し集光させてファイバ部に
入射させる。In the present invention, light from a discharge lamp having a short arc gap is reflected by an ellipsoidal reflector, condensed, and incident on the fiber section.
この際、楕円面反射鏡の輪郭を形成する楕円面の第１焦
点の近傍に放電灯を配置すると、放電灯からの光は楕円
面反射鏡によって楕円面の第２焦点の近傍に高い光密度
ですなわち小さな集光径で集光される。従って第２焦点
の近傍にファイバ部を配置することにより集光された光
をファイバ部に光量損失少なく入射させることかできる
。さらにファイバ部の入射側にテーパ部を設けているの
で、ファイバ本体の直径が集光径よりも小さい場合であ
ってもこれに伴なう光量の損失を少なくすることができ
る。At this time, if the discharge lamp is placed near the first focal point of the ellipsoid that forms the outline of the ellipsoidal reflector, the light from the discharge lamp will be directed to a high light density near the second focus of the ellipsoid by the ellipsoidal reflector. In other words, the light is focused with a small focusing diameter. Therefore, by arranging the fiber section near the second focal point, the focused light can be made to enter the fiber section with less light loss. Further, since the tapered portion is provided on the incident side of the fiber portion, even if the diameter of the fiber body is smaller than the condensing diameter, the loss in the amount of light accompanying this can be reduced.
以下、本発明の実施例を図面に基づいて説明する。 Embodiments of the present invention will be described below based on the drawings.
第１図は本発明に係る光源装置の実施例の構成図である
。本実施例の光源装置は、放電灯１と、放電灯１からの
光を集光させる反射鏡２と、集光した光を案内するファ
イバ部３とを備えている。FIG. 1 is a configuration diagram of an embodiment of a light source device according to the present invention. The light source device of this embodiment includes a discharge lamp 1, a reflecting mirror 2 that collects light from the discharge lamp 1, and a fiber section 3 that guides the collected light.
放電灯１は、陽極４と陰極５とかショートアークギャッ
プ６を介して対向しており、陽極４．陰極５間に所定の
電圧を印加することにより、ショートアークギャップ６
で放電させ光を放出させるようになっている。The discharge lamp 1 has an anode 4 and a cathode 5 facing each other with a short arc gap 6 interposed therebetween. By applying a predetermined voltage between the cathode 5, a short arc gap 6 is created.
It is designed to discharge light and emit light.
また反射＠２としては、放電灯１のショートアークギャ
ップ６の各位置からの光の集光に適した楕円面反射鏡が
用いられている。Further, as the reflection @2, an ellipsoidal reflecting mirror suitable for condensing light from each position of the short arc gap 6 of the discharge lamp 1 is used.
ファイバ部３は、第２′図に示すように、集光された光
の入射側にテーパ部７を有している。テーパ部７は、テ
ーパ状部分すなわちテーパ状ファイバ部８と、これを取
囲む外皮９とからなっている。As shown in FIG. 2', the fiber section 3 has a tapered section 7 on the incident side of the focused light. The tapered portion 7 consists of a tapered portion, that is, a tapered fiber portion 8, and an outer skin 9 surrounding the tapered portion.
外皮９は例えはステンレス製のものである。またテーパ
状ファイバ８は、入射端８ａの直径が出射端８ｂの直径
よりも大きくなっており、ファイバ本体９に取付けられ
るかあるいはファイバ本体９゛ と一体に形成されて
いる。なおファイバ本体９は、複数本のファイバが束ね
られたものであっても良いし、あるいは１本のファイバ
からなっていても良い。The outer skin 9 is made of stainless steel, for example. Further, the tapered fiber 8 has an input end 8a having a diameter larger than an output end 8b, and is attached to the fiber body 9 or formed integrally with the fiber body 9'. Note that the fiber main body 9 may be a bundle of a plurality of fibers, or may be a single fiber.
放電灯１９反射鏡２およびファイバ部３は、第３図に示
すように配置されている。The discharge lamp 19, reflecting mirror 2, and fiber section 3 are arranged as shown in FIG.
すなわち、放電灯１は、陰極５が反射鏡２の楕円面の第
１焦点Ｆ１の近傍に位置するよう配置さ＝ ４ −
れ、ファイバ部３は、反射鏡２の楕円面の第２焦点Ｆ２
の近傍に配置される。That is, the discharge lamp 1 is arranged such that the cathode 5 is located near the first focal point F1 of the ellipsoidal surface of the reflecting mirror 2, and the fiber section 3 is located near the second focal point F2 of the ellipsoidal surface of the reflecting mirror 2.
is placed near.
このように配置することにより、放電灯１のショートア
ークキャップ６からの光は反射鏡２で反射されて、第２
焦点Ｆ２に高密度に集光される。With this arrangement, the light from the short arc cap 6 of the discharge lamp 1 is reflected by the reflector 2, and the light from the short arc cap 6 of the discharge lamp 1 is reflected by the reflector 2.
The light is concentrated at a focal point F2 with high density.
例えは、反射鏡２の直径を約７６州、放電灯１のショー
トアークギャップ６の長さｄを１．３＋ｎｍ。For example, the diameter of the reflector 2 is approximately 76 nm, and the length d of the short arc gap 6 of the discharge lamp 1 is 1.3+nm.
反射鏡２の中心Ｃから放電灯１までの距離Ｘを１３．５
ｍｍ、中心Ｃから第２焦点Ｆ２までの距離ｙを１２０ｍ
ｍ、第２焦点Ｆ２からファイバ部３の入射端までの距離
Ｚを５ＩｎＩｎとすると、光の集光径をファイバ部３の
入射端において２ｍｍ乃至３ ｒｏｍ程度の小さなもの
にすることができる。The distance X from the center C of the reflector 2 to the discharge lamp 1 is 13.5.
mm, and the distance y from the center C to the second focal point F2 is 120 m.
m, and the distance Z from the second focal point F2 to the input end of the fiber section 3 is 5 InIn, the condensed diameter of the light can be made as small as about 2 mm to 3 rom at the input end of the fiber section 3.
さらに本実施例の光源装置では、ファイバ部３の入射側
かテーパ状ファイバ８となっているので、ファイバ本体
９の直径か光の集光径よりも小さいときにも、集光され
た光をファイバ部３により案内する際の光量の損失を小
さくすることができる。Furthermore, in the light source device of this embodiment, since the input side of the fiber section 3 is the tapered fiber 8, even when the diameter of the fiber body 9 is smaller than the diameter of the light condensing beam, the condensed light can be It is possible to reduce the loss in the amount of light when guiding by the fiber section 3.
例えば、放電灯１として出カフ５Ｗのキセノンショート
アークランプを用い、反射鏡２として直径７６ｍｍの可
視光反射のコールドリフレクタを用いて集光径を３州と
なるようにし、約１關の直径のファイバ束に上記集光さ
れた光を入射した場合、ファイバ束によって案内される
光の光量は平均９０．０００ルクスであった。これに対
して、同じ条件の下で集光された光を本実施例のファイ
バ部３に入射した場合（テーパ状ファイバ８の入射端８
ａ、出射端８ｂの直径をそれぞれ３ｍｍ、１ｍｍとし、
ファイバ本体９の直径をｌ ｒｍ＋ｎとした。）、ファ
イバ本体９によって案内される光の光量は平均１．４０
，０００ルクスであった。従って、ファイバ本体９にテ
ーパ状ファイバ８を付けることによって光量の損失を少
なくすることかできる。For example, a xenon short arc lamp with an output cuff of 5W is used as the discharge lamp 1, a cold reflector that reflects visible light with a diameter of 76 mm is used as the reflector 2, and the condensing diameter is set to three states. When the above-mentioned focused light was incident on the fiber bundle, the amount of light guided by the fiber bundle was 90,000 lux on average. On the other hand, when the light collected under the same conditions is incident on the fiber section 3 of this embodiment (the incident end 8 of the tapered fiber 8
a, the diameter of the output end 8b is 3 mm and 1 mm, respectively,
The diameter of the fiber body 9 was set to lrm+n. ), the average amount of light guided by the fiber body 9 is 1.40
,000 lux. Therefore, by attaching the tapered fiber 8 to the fiber body 9, the loss of light amount can be reduced.
またテーパ状ファイバ８を設けることによって、ランプ
を交換したときなどの光軸合せが従来に比べて著しく容
易になる６すなわち、従来では、集光された光をデーパ
状ファイバ８の設けられていないファイバ部に直接入射
させていたので、ファイバが細いときには、光軸合せか
非常に難かしかった。このため、光軸合せは、集光され
た光をデフォーカスの状態にしてファイバに入射させる
方法でなされ、精度良く光軸を合わせることができない
という欠点があった。これに対して本実施例では、光軸
が多少すれてもテーパ状ファイバ８によって光量の損失
が少なく、これにより集光された光をデフォーカスの状
態にせすども光軸合せを精度良くかつ容易に行なうこと
ができる。Furthermore, by providing the tapered fiber 8, it becomes much easier to align the optical axis when replacing a lamp, etc. 6 In other words, in the past, when the tapered fiber 8 was not provided, the focused light was much easier to align. Since the light was directly incident on the fiber section, it was extremely difficult to align the optical axis when the fiber was thin. For this reason, the optical axis alignment is performed by making the focused light in a defocused state and inputting it into the fiber, which has the disadvantage that the optical axis cannot be aligned with high precision. In contrast, in this embodiment, even if the optical axes shift to some extent, there is little loss in the amount of light due to the tapered fiber 8, and as a result, even though the focused light is in a defocused state, the optical axes can be aligned accurately and easily. can be done.
以上に説明したように本発明では放電灯、ファイバ部の
入射端を楕円面反射鏡の輪郭を形成する楕円面の第１焦
点の近傍、第２焦点の近傍にそれぞれ配置しているので
、放電灯からの光を高い光密度ですなわち小さな集光径
で集光させることかできる。さらにファイバ部の入射端
側にテーパ部を設けているので、ファイバ径が集光径よ
りも小さい場合でも光量の損失を少なくすることかでき
る。As explained above, in the present invention, the discharge lamp and the input end of the fiber section are placed near the first focal point and near the second focal point of the ellipsoid that forms the outline of the ellipsoidal reflector, so that the radiation It is possible to collect light from electric lamps with high light density, that is, with a small condensing diameter. Furthermore, since the tapered portion is provided on the incident end side of the fiber portion, it is possible to reduce the loss of light amount even when the fiber diameter is smaller than the condensing diameter.
第１図は本発明に係る光源装置の実施例の構成図、第２
図はテニパ部の断面図、第３図は放電灯。
反射鏡およびファイバ部の相互の位置関係を説明するた
めの図である。
１・・・放電灯、２・・・反射鏡、３・・・ファイバ部
。
６・・・ショートアークギャップ、７・・・テーパ部。
８・・・テーパ状ファイバ、８ａ・・・入射端。
９・・・ファイバ本体
特許出願人 浜松ホトニクス株式会社代理人 弁
理士 植 本 雅 治手続補正書（岐）
特許庁長官 小 川 邦 夫 殿
１ 事件の表示
昭和６３年特許願第００２２９７号
２ 発明の名称
光源装置
３ 補正をする者
事件との関係 特許出願人
東京部品用区東大井３丁目２０番７号
６ 補正の対象
明細書の「発明の詳細な説明」の欄
図面め第２図
７ 補正の内容
（１）明細書第５頁第７行目乃至第８行目に［テーパ状
ファイバ部」とあるのを「テーパ状ファイバ」に訂正す
る。
１２）明細書第５頁第８行目、第９行目に「外皮９」と
あるのを「外皮１０」に訂正する。
に訂正する。
（４）第２図を別紙のとおり補正する６第３図について
は内容に変更ない。FIG. 1 is a configuration diagram of an embodiment of a light source device according to the present invention, and FIG.
The figure is a cross-sectional view of the teniper part, and Figure 3 is a discharge lamp. FIG. 3 is a diagram for explaining the mutual positional relationship between a reflecting mirror and a fiber section. 1...Discharge lamp, 2...Reflector, 3...Fiber section. 6...Short arc gap, 7...Tapered part. 8...Tapered fiber, 8a...Incidence end. 9... Fiber body patent applicant Hamamatsu Photonics Co., Ltd. agent Patent attorney Masaharu Uemoto Procedural amendment (gi) Commissioner of the Japan Patent Office Kunio Ogawa 1 Indication of case Patent application No. 002297 of 1988 2 Invention Name Light source device 3 Relationship to the case of the person making the amendment Patent applicant 3-20-7-6 Higashioi, Tokyo Parts Yo-ku Column drawing of “Detailed description of the invention” of the specification subject to amendment No. 2, 7 Amendment Contents (1) In the 7th and 8th lines of page 5 of the specification, the phrase "tapered fiber section" is corrected to "tapered fiber." 12) In the 8th and 9th lines of page 5 of the specification, "Outer skin 9" is corrected to "Outer skin 10." Correct to. (4) Figure 2 will be amended as shown in the attached sheet 6 There will be no changes to the content of Figure 3.
Claims (1)
の光を反射し集光させる楕円面反射鏡と、集光した光を
案内するファイバ部とを備え、前記放電灯は、前記楕円
面反射鏡の輪郭を形成する楕円面の第１焦点の近傍に配
置され、前記ファイバ部の入射端は、前記楕円面の第２
焦点の近傍に配置され、前記ファイバ部は、ファイバ本
体と、入射端側に位置し前記ファイバ本体と接続される
テーパ部とを有していることを特徴とする光源装置。The discharge lamp includes a discharge lamp having a short arc gap, an ellipsoidal reflector that reflects and condenses light from the discharge lamp, and a fiber portion that guides the condensed light. The input end of the fiber section is located near the first focal point of the ellipsoidal surface forming the contour, and the input end of the fiber section is located at the second focal point of the ellipsoidal surface.
A light source device, wherein the fiber section is disposed near a focal point and includes a fiber main body and a tapered section located on an incident end side and connected to the fiber main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63002297A JP2582599B2 (en) | 1988-01-08 | 1988-01-08 | Light source device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63002297A JP2582599B2 (en) | 1988-01-08 | 1988-01-08 | Light source device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01183001A true JPH01183001A (en) | 1989-07-20 |
| JP2582599B2 JP2582599B2 (en) | 1997-02-19 |
Family
ID=11525431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63002297A Expired - Lifetime JP2582599B2 (en) | 1988-01-08 | 1988-01-08 | Light source device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2582599B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0642047A1 (en) * | 1993-09-02 | 1995-03-08 | General Electric Company | Lighting system |
| EP0650011A1 (en) * | 1993-10-20 | 1995-04-26 | General Electric Company | A high efficiency dual output light source |
| JP2008117711A (en) * | 2006-11-07 | 2008-05-22 | Ichikoh Ind Ltd | Linear lighting device |
| JP2008117712A (en) * | 2006-11-07 | 2008-05-22 | Ichikoh Ind Ltd | Linear lighting device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56131615U (en) * | 1980-03-07 | 1981-10-06 | ||
| JPS6071003U (en) * | 1983-10-21 | 1985-05-20 | 市光工業株式会社 | Vehicle lights |
| JPS6142810A (en) * | 1984-08-01 | 1986-03-01 | 日本油脂株式会社 | Lighting apparatus for room with restricted use of fire and electricity |
| JPS6265613U (en) * | 1985-10-15 | 1987-04-23 |
-
1988
- 1988-01-08 JP JP63002297A patent/JP2582599B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56131615U (en) * | 1980-03-07 | 1981-10-06 | ||
| JPS6071003U (en) * | 1983-10-21 | 1985-05-20 | 市光工業株式会社 | Vehicle lights |
| JPS6142810A (en) * | 1984-08-01 | 1986-03-01 | 日本油脂株式会社 | Lighting apparatus for room with restricted use of fire and electricity |
| JPS6265613U (en) * | 1985-10-15 | 1987-04-23 |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0642047A1 (en) * | 1993-09-02 | 1995-03-08 | General Electric Company | Lighting system |
| EP0650011A1 (en) * | 1993-10-20 | 1995-04-26 | General Electric Company | A high efficiency dual output light source |
| US6220740B1 (en) | 1993-10-20 | 2001-04-24 | General Electric Company | High efficiency dual output light source |
| JP2008117711A (en) * | 2006-11-07 | 2008-05-22 | Ichikoh Ind Ltd | Linear lighting device |
| JP2008117712A (en) * | 2006-11-07 | 2008-05-22 | Ichikoh Ind Ltd | Linear lighting device |
| JP4618232B2 (en) * | 2006-11-07 | 2011-01-26 | 市光工業株式会社 | Line lighting device |
| JP4618233B2 (en) * | 2006-11-07 | 2011-01-26 | 市光工業株式会社 | Line lighting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2582599B2 (en) | 1997-02-19 |
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