JPS61190519U

JPS61190519U -

Info

Publication number: JPS61190519U
Application number: JP7322085U
Authority: JP
Priority date: 1985-05-17
Filing date: 1985-05-17
Publication date: 1986-11-27

Description

[Brief explanation of drawings]

第１図は本考案による内視鏡の一例の全体斜視
図、第２図は本考案による内視鏡の先端部の軸方
向断面図、第３図は第２図の端面図、第４図は本
考案による内視鏡の内視鏡本体の先端部分の軸方
向断面図、第５図は第４図の端面図、第６図は本
考案による内視鏡の接続部での細く画素数の少な
いイメージフアイバから太く画素数の多いイメー
ジフアイバへの画像伝達の概念図、第７図は従来
の内視鏡の概略構成図、第８図はイメージフアイ
バの断面図、第９図は従来のイメージフアイバど
うしの接続部の概念図。１０……先端部、１１……細く画素数の少ない
イメージフアイバ束、１２……対物レンズ、１３
……ライトガイドフアイバ、１５，２７……ねじ
部、１３′，１９……ライトガイドフアイバ束、
１６……嵌合溝、１７……太く画素数の多いイメ
ージフアイバ束、１８……レンズ、２１……嵌合
突起、２３……接続部、２４……内視鏡本体、２
５……接眼部。 FIG. 1 is an overall perspective view of an example of an endoscope according to the present invention, FIG. 2 is an axial sectional view of the distal end of the endoscope according to the present invention, FIG. 3 is an end view of FIG. 2, and FIG. 4 is an end view of the endoscope according to the present invention. is an axial cross-sectional view of the distal end portion of the endoscope main body of the endoscope according to the present invention, FIG. 5 is an end view of FIG. A conceptual diagram of image transmission from an image fiber with a small number of pixels to a thick image fiber with a large number of pixels, Fig. 7 is a schematic diagram of a conventional endoscope, Fig. 8 is a cross-sectional view of the image fiber, and Fig. 9 is a conventional endoscope. A conceptual diagram of a connection between image fibers. 10... Tip portion, 11... Thin image fiber bundle with a small number of pixels, 12... Objective lens, 13
...Light guide fiber, 15, 27...Threaded portion, 13', 19...Light guide fiber bundle,
16... Fitting groove, 17... Thick image fiber bundle with a large number of pixels, 18... Lens, 21... Fitting protrusion, 23... Connection portion, 24... Endoscope main body, 2
5... Eyepiece.

Claims

[Claims for Utility Model Registration] (1) A tip portion including an objective lens and a bundle of thin image fibers with a small number of pixels arranged coaxially with each other, and a light guide fiber arranged around these lenses and the bundle of image fibers; , an endoscope main body that is removably connected to the distal end, and which illuminates a thick image fiber bundle with a large number of images optically connected to the image fiber bundle via a magnifying lens and a light guide at the distal end. an endoscope body including a light guide fiber bundle for transmitting light, and the rear end of the distal end portion and the distal end of the endoscope body are removably connected coaxially to each other, and the axial position of both is fixed. A connecting portion is provided, and the connecting portion allows the image transmitted by the image fiber bundle with a small number of pixels at the distal end to be transmitted through the magnifying lens at the distal end of the endoscope main body. An endoscope characterized in that an enlarged image is projected onto the tip of a thick image fiber bundle having a large number of pixels, and the image is observed using an eyepiece at the rear end of the thick image fiber bundle of the endoscope main body. (2) A connecting part provided at the rear end of the distal end and the distal end of the endoscope body, which removably connects the two coaxially and allows the axial position of both to be adjusted, is a threaded part. The endoscope according to claim 1 of the utility model registration claim, characterized in that: (3) A fitting groove and a fitting protrusion in the axial direction for circumferential positioning of the two are provided at the connecting portion between the rear end of the tip and the tip of the endoscope body, respectively. The endoscope according to claim 2 of the utility model registration claim.