JPS6017404A - Uneven illuminance correcting type multi-image fiber - Google Patents

Uneven illuminance correcting type multi-image fiber

Info

Publication number
JPS6017404A
JPS6017404A JP58124760A JP12476083A JPS6017404A JP S6017404 A JPS6017404 A JP S6017404A JP 58124760 A JP58124760 A JP 58124760A JP 12476083 A JP12476083 A JP 12476083A JP S6017404 A JPS6017404 A JP S6017404A
Authority
JP
Japan
Prior art keywords
image
center
lens
image fiber
illuminance
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
Application number
JP58124760A
Other languages
Japanese (ja)
Other versions
JPS6365921B2 (en
Inventor
Kozo Ono
公三 小野
Mitsuru Nishikawa
満 西川
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.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
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 Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP58124760A priority Critical patent/JPS6017404A/en
Publication of JPS6017404A publication Critical patent/JPS6017404A/en
Publication of JPS6365921B2 publication Critical patent/JPS6365921B2/ja
Granted legal-status Critical Current

Links

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
    • G02B6/04—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres
    • G02B6/06—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings formed by bundles of fibres the relative position of the fibres being the same at both ends, e.g. for transporting images

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)

Abstract

PURPOSE:To equalize an illuminance of the center part and the circumferential part of a composite image by constituting so that an F-number of a lens of the center becomes larger than an F-number of a lens of the circumference. CONSTITUTION:In an elementary lens group 3, an F-number of a lens of the center is made larger than an F-number of the circumferential part. As a result, a composite picture of a uniform illuminance is obtained by limiting the quantity of a light which is made incident to an image fiber of the center. When an aperture variable diaphragm is added to the lens of the center, the F-number can be varied continuously, and the illuminance can be adjusted easily.

Description

【発明の詳細な説明】 （技術分野） 本発明は、マルチイメージファイバにおいて問題となる
合成画像の中央部と周辺部の照度むらを補正することに
関係する。画像合成マルチイメージファイバは、画素数
を増加させるために複数本のイメージファイバを束ね被
写体を各イメージファイバに分割して伝送し、受像側で
再び画像合成するものである。DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to correcting illuminance unevenness between the center and periphery of a composite image, which is a problem in multi-image fibers. The image synthesis multi-image fiber is a device in which a plurality of image fibers are bundled to increase the number of pixels, the subject is divided and transmitted to each image fiber, and the images are synthesized again on the image receiving side.

（従来技術と問題点） 第１図に示すように、画像合成マルチイメージファイバ
は任意の位置に存在する被写体を正しく分割するために
、第１撮像レンズ１で定位置に被写体実像２を結び、そ
の像２を素レンズ群３でイメージファイバ束４に分割伝
送する。したがって像周辺部からの光線束は、第１撮像
レンズの周辺を通るので像中央部からの光量より減少し
、合成画像の周辺部は中央部より暗くなる。(Prior art and problems) As shown in FIG. 1, the image synthesis multi-image fiber connects the real image 2 of the subject at a fixed position with the first imaging lens 1 in order to correctly divide the subject existing at any position. The image 2 is divided and transmitted to an image fiber bundle 4 by an elementary lens group 3. Therefore, since the light beam from the image periphery passes around the first imaging lens, the amount of light rays from the image periphery is smaller than that from the image center, and the periphery of the composite image becomes darker than the center.

（発明の構成） 本発明は、以上に記した問題点を解決し、合成画像が均
一な照度を有するマルチイメージファイバを与えるもの
である。(Structure of the Invention) The present invention solves the problems described above and provides a multi-image fiber in which a composite image has uniform illuminance.

本発明は、素レンズ群３において中央のレンズＩＦナン
バを周辺部のそれより大きくすることによって中央のイ
メージファイバに入射する光量を制限し、均一な照度の
合成画像を得るものである。The present invention limits the amount of light incident on the central image fiber by making the central lens IF number larger than that of the peripheral parts in the elementary lens group 3, thereby obtaining a composite image with uniform illuminance.

中央のレンズに口径可変しぼりを付加すればＦナンバが
連続的に変化させることができるので照度調整が容易に
行なえる。これは第２図に示すように素レンズ群の中央
のレンズに口径可変しぼりを付加することによって達成
される。By adding a variable aperture diaphragm to the central lens, the F number can be changed continuously, making it easy to adjust the illuminance. This is achieved by adding a variable aperture diaphragm to the central lens of the elementary lens group, as shown in FIG.

本発明の一実施例としての各光学系の配置は以下の通り
である。The arrangement of each optical system as an example of the present invention is as follows.

第１撮像レンズ・焦点距離３０ｍｎ＋、Ｆナンバ０．９
素レンズ・−焦点距離２．７ｍｍ、Ｆナンバ１．３５た
だし中央のレンズはＦナンバ可変（≧１．３５）ｂ１＝
３０ｍｍ、ａ２＝１４．２ｍｍ、ｂ２＝３．３ｍｍｇＦ
＝５ｍｍ、　ｄＦ＝１．３５ｍｍ この結果照度むらのない合成画像が得られた。1st imaging lens, focal length 30mm+, F number 0.9
Elementary lens - Focal length 2.7mm, F number 1.35 However, the center lens has variable F number (≧1.35) b1=
30mm, a2=14.2mm, b2=3.3mmgF
=5mm, dF=1.35mm As a result, a composite image without uneven illuminance was obtained.

（発明の効果）一 本発明により、合成画像の中央部と周辺部で明るさを均
一にすることができる。(Effects of the Invention) According to the present invention, it is possible to make the brightness uniform in the center and the periphery of a composite image.

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

第１図は画像合成マルチイメージファイバの構成図を示
し、第２図は本発明の方法を実施した画像合成マルチイ
メージファイバの構成図を示す。 ■・・・・第１撮像レンズ ２　・・−・・第１撮像レンズによる被写体実像３・−
・・・・素レンズ群 ４・・　イメージファイバ束 ５・・・・・・口径可変しぼり 特許出願人 工業技術院長 川田裕部FIG. 1 shows a block diagram of an image synthesis multi-image fiber, and FIG. 2 shows a block diagram of an image synthesis multi-image fiber implementing the method of the present invention. ■...First imaging lens 2...Real image of the subject 3 by the first imaging lens.
... Elementary lens group 4 ... Image fiber bundle 5 ... Variable aperture aperture patent applicant Yube Kawada, Director of the Agency of Industrial Science and Technology

Claims (1)

【特許請求の範囲】[Claims] （１）被写体を複数本のイメージファイ、バに分割して
伝送し、受像側で画像合成するマルチイメージファイバ
の素レンズ群において、中央のレンズのＦナンバを周辺
のレンズのＦナンバよす、ｌ＜したことにより合成像の
中央部と周辺部の照度を均一化したことを特徴とする照
度むら補正型マルチイメージファイバ(1) In a multi-image fiber element lens group that divides the subject into multiple image fibers, transmits them, and synthesizes the images on the receiving side, the F number of the central lens is set to the F number of the surrounding lenses. A multi-image fiber that corrects uneven illuminance and is characterized by equalizing the illuminance at the center and periphery of the composite image by
JP58124760A 1983-07-11 1983-07-11 Uneven illuminance correcting type multi-image fiber Granted JPS6017404A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58124760A JPS6017404A (en) 1983-07-11 1983-07-11 Uneven illuminance correcting type multi-image fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58124760A JPS6017404A (en) 1983-07-11 1983-07-11 Uneven illuminance correcting type multi-image fiber

Publications (2)

Publication Number Publication Date
JPS6017404A true JPS6017404A (en) 1985-01-29
JPS6365921B2 JPS6365921B2 (en) 1988-12-19

Family

ID=14893432

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58124760A Granted JPS6017404A (en) 1983-07-11 1983-07-11 Uneven illuminance correcting type multi-image fiber

Country Status (1)

Country Link
JP (1) JPS6017404A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6073798A (en) * 1983-09-30 1985-04-25 株式会社東芝 Alarm

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6073798A (en) * 1983-09-30 1985-04-25 株式会社東芝 Alarm

Also Published As

Publication number Publication date
JPS6365921B2 (en) 1988-12-19

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