JPH0430105A - Fiber light source device - Google Patents

Fiber light source device

Info

Publication number
JPH0430105A
JPH0430105A JP13637690A JP13637690A JPH0430105A JP H0430105 A JPH0430105 A JP H0430105A JP 13637690 A JP13637690 A JP 13637690A JP 13637690 A JP13637690 A JP 13637690A JP H0430105 A JPH0430105 A JP H0430105A
Authority
JP
Japan
Prior art keywords
light source
piece
lamp light
lamp
light sources
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
Application number
JP13637690A
Other languages
Japanese (ja)
Inventor
Koji Yamamoto
宏司 山本
Satoshi Yamatake
聰 山竹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP13637690A priority Critical patent/JPH0430105A/en
Publication of JPH0430105A publication Critical patent/JPH0430105A/en
Pending legal-status Critical Current

Links

Landscapes

  • Length Measuring Devices By Optical Means (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

PURPOSE:To obtain intensity of illumination free from the unevenness of the intensity of illumination and stabel extending over a long period of time by providing a branch fiber constructed by collecting plural very fine optical fibers by distributing them uniformly at both an incident end and an exiting end, and making always quantity of light from a lamp light source at each exiting end uniform and prescribed quantity while a part of the lamp light sources is always kept in a put-out state. CONSTITUTION:A fiber light source device is constituted of the branch fiber 5 consisting of m-piece of the incident ends 2 of the same number corresponding to m-piece of the lamp light sources 1, n-piece of the exiting ends 3, and a coupled.distributed part 4. Besides, an automatic lighting device 6 and a quantity of light detector 7 are connected to each lamp light source 1. The lamp light sources 1 are kept in a state that l-piece of them are always put out and (m-l)-piece of them are always lighted. Thus, total quantity of light from m-piece of the lamp light sources 1 is the same with lapse of time, and when one piece of the lamp light source 1 can not help being put out because of the inpropriety of quantity of light or life, one of l-piece of the lamp light sources left put out is lighted quickly by the operation of the quantity of light detector 7 and the automatic lighting device 6.

Description

【発明の詳細な説明】 (産業上の利用分野) この発明は、ファイバ光源装置に関するものである。さ
らに詳しくは、この発明は、照度ムラがなく、長期に渡
って安定した照度を得ることのできる光ファイバを利用
した新しい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 fiber light source device. More specifically, the present invention relates to a new light source device using an optical fiber that is free from uneven illuminance and can provide stable illuminance over a long period of time.

(従来の技術) 従来より、被照射物に対して3次元的に多方向より光を
照射して照明する方法が知られている。
(Prior Art) Conventionally, a method of illuminating an object by irradiating light three-dimensionally from multiple directions is known.

この方法は、立体もしくは平面の被照射物に対して照度
ムラがないように照明することを目的としているもので
ある。
The purpose of this method is to illuminate a three-dimensional or two-dimensional object to be illuminated so that there is no unevenness in illuminance.

この方法には、通常、ランプ光源が使用されてもいる。A lamp light source is also commonly used in this method.

この3次元的な多方向からの照明方法は、目視外観検査
や色ムラ検査等において重要な手段となっている。
This three-dimensional multidirectional illumination method is an important means for visual appearance inspection, color unevenness inspection, and the like.

(発明が解決しようとする課題) しかしながら、これまでの方法においては光源としてラ
ンプ光源を用いているため、個々のランプの固体差や寿
命の相違による照度ムラの発生が避けられなかった。ま
たそのために、従来の照明方法においては、光源ランプ
の点検、保守がめんどうで、しばしばその使用を停止し
なければならなかった。
(Problem to be Solved by the Invention) However, in the conventional methods, since a lamp light source is used as a light source, the occurrence of uneven illuminance due to individual differences and differences in lifespan of individual lamps cannot be avoided. Furthermore, in the conventional lighting method, inspection and maintenance of the light source lamp is troublesome, and the use of the lamp often has to be stopped.

この発明は、以上の運りの事情に鑑みてなされたもので
あり、従来の多方向照明法の欠点を解消し、照度ムラが
なく、長期に渡って安定した照度を得ることができる改
善された新しい照明方法、特にその装置を提供すること
を目的としている。
This invention was made in view of the above-mentioned circumstances, and is an improved method that eliminates the drawbacks of the conventional multi-directional lighting method and provides stable illuminance over a long period of time without uneven illuminance. The object of the present invention is to provide a new lighting method and, in particular, a device thereof.

(課題を解決するための手段) この発明は、上記の通りの課題を解決するものとして、
複数のランプ光源と、これに対応する複数の入射端およ
び複数の出射端とを有し、複数の極細光ファイバを入射
端および出射端の各々に均等に配分して集束させた分岐
ファイバーとからなり、ランプ光源の一部を常に消燈し
た状態としつつランプ光源からの各々の出射端における
光量を常に均等、かつ所定のものとしてなることを特徴
とするファイバ光源装置を提供する。
(Means for solving the problems) This invention solves the problems as described above.
A branched fiber having a plurality of lamp light sources, a plurality of corresponding input ends and a plurality of output ends, and a plurality of ultra-fine optical fibers evenly distributed and focused at each of the input ends and output ends. To provide a fiber light source device which is characterized in that a part of the lamp light source is always turned off and the amount of light at each output end from the lamp light source is always equal and predetermined.

(作 用) この発明のファイバ光源装置においては、複数のランプ
光源、たとえばmalのランプ光源に対応して同一のm
個の入射端と、これと同数または興なるn個の出射端と
を有し、しかも多数の極細光ファイバを入射端および出
射端の各々に均等に配分して集束させた分岐ファイバと
からなり、ランプ光源m個のうちの一部、j@を常に消
燈した状態としているため、入射端に対応するランプ光
源のいずれが点燈および消燈していようとも、出射端の
n個の分岐ファイバには各々その光量が全て等しい光が
伝送され、被照射物に対しては、出射端のいずれからも
均等な光量の光が照射されることになる。
(Function) In the fiber light source device of the present invention, the same m
It consists of a branch fiber having n input ends and n output ends which are the same number or more, and in which a large number of ultra-thin optical fibers are evenly distributed and focused at each of the input ends and output ends. , some of the m lamp light sources, j@, are always turned off, so that no matter which of the lamp light sources corresponding to the input end is turned on or off, the n branches at the output end Light having the same amount of light is transmitted to each fiber, and the object to be irradiated is irradiated with the same amount of light from both of the output ends.

仮に点燈中のいずれかのランプ光源が光量不足、寿命等
で消燈した場合にも、出射端n個のファイバからの出射
光の光量は均等であり、しかも、消燈中の1個のランプ
光源のうちのいずれかを点燈することにより、経時的に
も同量の光量を安定して照射することが可能となる。
Even if one of the lamp light sources that is turned on goes out due to insufficient light intensity, lifespan, etc., the amount of light emitted from the n fibers at the output end will be equal, and moreover, By turning on any one of the lamp light sources, it becomes possible to stably irradiate the same amount of light over time.

長期に渡って安定した照度が維持され、照度ムラも生じ
ない。
Stable illuminance is maintained over a long period of time, and there is no uneven illuminance.

(実施例) 以下、添付した図面に沿ってこの発明のファイバ光源装
置についてさらに詳し説明する。
(Example) Hereinafter, the fiber light source device of the present invention will be explained in more detail with reference to the attached drawings.

第1図は、この発明のファイバ光源の構成を例示したも
のであり、m個のランプ光源(1)に対応して、同数m
個の入射端(2)とn1Ilの出射端(3)、および結
合・分配部(4)とからなる分岐ファイバ(5)によっ
てファイバ光源装置を構成している。また、ランプ光源
(1)の各々には自動点燈装置〈6)と光量検知器(7
)とを連結している。
FIG. 1 shows an example of the configuration of the fiber light source of the present invention.
A fiber light source device is constituted by a branched fiber (5) consisting of an input end (2) of n1Il, an output end (3) of n1Il, and a coupling/distribution section (4). Each of the lamp light sources (1) is equipped with an automatic lighting device (6) and a light amount detector (7).
) are connected.

光源ランプ(1)のうちのjIMは常に消燈し、m−j
lmが常時点燈した状態になるようにしている。もちろ
ん、消燈しているjllのランプ光源(1)は特定のも
のに限定されることはない、いずれか任意のものでよく
、総数として1個のランプ光源(1)が消燈状態にある
ようにする。
Of the light source lamps (1), jIM is always turned off, and m-j
I am trying to keep lm lit all the time. Of course, the JLL lamp light source (1) that is turned off is not limited to a specific one; it may be any arbitrary one, and one lamp light source (1) in total is turned off. Do it like this.

このことは、m個のランプ光源(1)からの総光量が経
時的に同一とするための措置であり、仮に1本のランプ
光源(1)が光量不正、寿命等によって消燈せざるを得
ない場合には、光量検知器(7)と自動点燈装置(6)
の作動によってすみやかに消燈中のJ9のランプ光源の
うちの1本を点燈するようにする。この切替時の照度の
変動は極めて小さなものに抑えることができる。このた
め、長期に渡って安定した照度を得ることが可能となる
This is a measure to ensure that the total amount of light from the m lamp light sources (1) remains the same over time, and even if one lamp light source (1) is forced to turn off due to incorrect light amount, end of life, etc. If this is not possible, use a light level detector (7) and automatic lighting device (6).
When the lamp is activated, one of the lamp light sources of J9, which is currently turned off, is immediately turned on. Fluctuations in illuminance during this switching can be suppressed to an extremely small level. Therefore, it is possible to obtain stable illuminance over a long period of time.

第2図は、この発明のファイバ光源装置による光照射の
例を示したものである。従来と同様に、立体的に多方向
からの照明を行っている。
FIG. 2 shows an example of light irradiation by the fiber light source device of the present invention. As in the past, it provides three-dimensional lighting from multiple directions.

この場合、この発明によって上記した通り長期に渡って
安定した照度が得られるとともに、ファイバ光源装置の
出射端(3)の各々から出射される光の光量は全て均等
となる。このため、被照射物(8)に対しての照度ムラ
の発生はない。
In this case, according to the present invention, stable illuminance can be obtained over a long period of time as described above, and the amount of light emitted from each of the output ends (3) of the fiber light source device becomes equal. Therefore, there is no occurrence of uneven illuminance to the irradiated object (8).

この点について詳しく説明すると、第3図にも示したよ
うに、m個の入射端(2)には極細光ファイバを均等配
分し、これらのf!細光ファイバは、結合・分配部(4
)を介して、n個の出射端(3)において均等に再配分
している。このため出射端(3)の特定部位、たとえば
QJに集められた極細光ファイバは、入射端(2)の各
々、PIP2.Pl・・・Pmからそれぞれ1 / n
本づつとなる。
To explain this point in detail, as shown in FIG. 3, ultrafine optical fibers are evenly distributed to m input ends (2), and these f! The thin optical fiber is connected to the coupling/distributing section (4
), it is evenly redistributed at the n output ends (3). Therefore, the ultrafine optical fibers gathered at a specific part of the output end (3), for example, QJ, are connected to each of the input ends (2), PIP2. Pl...1/n each from Pm
One book at a time.

出射端Qjに集めた極細光ファイバは、第4図にも示し
たようにランダムな極細光ファイバ(9)の配列とし、
入射端P+ 、P2 、Ps・・・Pmに対しては片寄
りがなく一様である。
The ultra-fine optical fibers collected at the output end Qj are arranged in a random array of ultra-fine optical fibers (9) as shown in FIG.
The incident ends P+, P2, Ps, . . . , Pm are uniform with no deviation.

もちろん、入射端(2)におけるm本のファイバの断面
積は全て等しく、かつ、出射端(3)のn本のファイバ
も同様に断面積は全て等しい。
Of course, the cross-sectional areas of the m fibers at the input end (2) are all equal, and the cross-sectional areas of the n fibers at the output end (3) are also the same.

このため、仮に、ランプ光源(1)の1本が消燈した瞬
間、あるいは光量変動が生じても、出射端(3)では各
々のQ、、Q2・・・Qnについての光量の不均一性は
発生しない、このため出射端(3)では照射ムラがない
Therefore, even if one of the lamp light sources (1) goes out at the moment of extinguishing, or even if the light amount fluctuates, the light amount will be non-uniform for each Q, Q2...Qn at the output end (3). Therefore, there is no irradiation unevenness at the output end (3).

もちろん、この発明のファイバ光源装置においてはその
出射端(3)の端部形状に限定はない。
Of course, in the fiber light source device of the present invention, there is no limitation to the shape of the output end (3).

出射口にレンズ、拡散板等を取付けてもよい。A lens, a diffuser plate, etc. may be attached to the exit port.

集束させる極細ファイバについてもその種類や径に特段
の限定はない、たとえばその径が50μm程度の極細フ
ァイバを、1方本程度集束して使用することができる。
There are no particular limitations on the type or diameter of the ultra-fine fibers to be focused; for example, ultra-fine fibers with a diameter of about 50 μm can be focused on one side and used.

もちろん、コネクターの連結等も自在になし得る。Of course, connectors can be connected freely.

(発明の効果) この発明により、以上詳しく説明したように、長期に渡
って安定した照度が得られ、しがも各々の出射端からの
照度ムラも発生しない、三次元の多方向からの照明によ
る物品、色ムラ等の検査にも有用な新しい光源装置が提
供される。
(Effects of the Invention) As explained in detail above, this invention provides three-dimensional, multidirectional illumination that provides stable illuminance over a long period of time and does not cause uneven illuminance from each output end. A new light source device is provided which is also useful for inspecting articles, color unevenness, etc.

【図面の簡単な説明】[Brief explanation of drawings]

第1図はこの発明の光源装置の構成を例示した模式図で
ある。第2図はその使用例を示した部分斜視図である。 第3図は、この発明の分岐ファイバを示した模式図であ
り、第4図は、ファイバ断面を示した模式図である。 1・・・ランプ光源 2・・・入 射 端 3・・・出 射 端 4・・・結合・分配部 5・・・分岐ファイバ 6・・・自動点燈装置 7・・・光量検知器 8・・・被照明物 9・・・極細ファイバ
FIG. 1 is a schematic diagram illustrating the configuration of a light source device of the present invention. FIG. 2 is a partial perspective view showing an example of its use. FIG. 3 is a schematic diagram showing a branched fiber of the present invention, and FIG. 4 is a schematic diagram showing a cross section of the fiber. 1...Lamp light source 2...Incidence end 3...Output end 4...Coupling/distribution section 5...Branch fiber 6...Automatic lighting device 7...Light amount detector 8 ...Illuminated object 9...Ultra-fine fiber

Claims (2)

【特許請求の範囲】[Claims] (1)複数のランプ光源と、これに対応する複数の入射
端および複数の出射端とを有し、複数の極細光ファイバ
を入射端および出射端の各々に均等に配分して集束させ
た分岐ファイバーとからなり、ランプ光源の一部を常に
消燈した状態としつつランプ光源からの各々の出射端に
おける光量を常に均等、かつ所定のものとしてなること
を特徴とするファイバ光源装置。
(1) A branch that has multiple lamp light sources and corresponding multiple input ends and multiple output ends, and multiple ultra-thin optical fibers are evenly distributed and focused at each of the input ends and output ends. What is claimed is: 1. A fiber light source device, characterized in that the amount of light at each output end of the lamp light source is always equal and predetermined while a part of the lamp light source is always kept in a state of being turned off.
(2)ランプ光源の各々に自動点燈装置および光量検知
装置を連結してなるファイバ光源装置。
(2) A fiber light source device in which an automatic lighting device and a light amount detection device are connected to each lamp light source.
JP13637690A 1990-05-26 1990-05-26 Fiber light source device Pending JPH0430105A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13637690A JPH0430105A (en) 1990-05-26 1990-05-26 Fiber light source device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13637690A JPH0430105A (en) 1990-05-26 1990-05-26 Fiber light source device

Publications (1)

Publication Number Publication Date
JPH0430105A true JPH0430105A (en) 1992-02-03

Family

ID=15173716

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13637690A Pending JPH0430105A (en) 1990-05-26 1990-05-26 Fiber light source device

Country Status (1)

Country Link
JP (1) JPH0430105A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008122641A (en) * 2006-11-13 2008-05-29 Victor Co Of Japan Ltd Projection type display device
JP2008145735A (en) * 2006-12-11 2008-06-26 Mitsubishi Electric Corp Multivision system, video display device, and video display method
JP2015212688A (en) * 2014-04-18 2015-11-26 Drc株式会社 Light irradiation device and method for measuring light transmission characteristic
WO2018199076A1 (en) * 2017-04-25 2018-11-01 三菱重工業株式会社 Clearance measurement device, clearance measurement sensor, and clearance measurement method
WO2024084561A1 (en) * 2022-10-18 2024-04-25 日本電信電話株式会社 Optical transmission system design method and design device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008122641A (en) * 2006-11-13 2008-05-29 Victor Co Of Japan Ltd Projection type display device
JP2008145735A (en) * 2006-12-11 2008-06-26 Mitsubishi Electric Corp Multivision system, video display device, and video display method
JP2015212688A (en) * 2014-04-18 2015-11-26 Drc株式会社 Light irradiation device and method for measuring light transmission characteristic
WO2018199076A1 (en) * 2017-04-25 2018-11-01 三菱重工業株式会社 Clearance measurement device, clearance measurement sensor, and clearance measurement method
JP2018185195A (en) * 2017-04-25 2018-11-22 三菱重工業株式会社 Clearance measuring device, clearance measuring sensor and clearance measuring method
US11073378B2 (en) 2017-04-25 2021-07-27 Mitsubishi Heavy Industries, Ltd. Clearance measurement device, clearance measurement sensor, and clearance measurement method
WO2024084561A1 (en) * 2022-10-18 2024-04-25 日本電信電話株式会社 Optical transmission system design method and design device

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