JPS6111118U

JPS6111118U - Objective lens optical system for endoscopes

Info

Publication number: JPS6111118U
Application number: JP9256984U
Authority: JP
Inventors: 晋大城
Original assignee: 富士写真光機株式会社
Priority date: 1984-06-22
Filing date: 1984-06-22
Publication date: 1986-01-23
Also published as: JPH0446255Y2

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は本考案に係る内視鏡用対物レンズ光学系の一実
施例の要部構成説明用拡大縦断面図で、第２図はその要
部構成部のみの拡大縦断面図であり、第３図は本考案が
改良した従来よりの内視鏡の対物レンズ光学系における
絞り部材部の拡大縦断面図である。１；先端金物、２；対物レンズ光学系装着用孔、３，４
；レンズ装着用孔部、５；突条、６；第一鏡筒装着用孔
部、７；第二鏡筒兼イメージガイド光学繊維東結着鞘体
装着用孔部、８；イメージガイド光学繊維束結着鞘体、
０；対物レンズ光学系、１１，１２，１３，１４，１５
，１６；レンズ、２０；第一鏡筒、２１；筒状部、２２
，２２′；係接面、２３，２３’；内側縮径部、２４；
透孔付き端板、２５；絞り部材、２６．２６’；絞り用
開孔部、２５′；絞り部材部、３０；第二鏡筒。FIG. 1 is an enlarged longitudinal cross-sectional view for explaining the configuration of the main parts of an embodiment of the objective lens optical system for an endoscope according to the present invention, and FIG. 2 is an enlarged longitudinal cross-sectional view of only the main parts, FIG. 3 is an enlarged vertical cross-sectional view of a diaphragm member in a conventional endoscope objective lens optical system improved by the present invention. 1; Tip hardware, 2; Hole for attaching objective lens optical system, 3, 4
Hole for lens attachment, 5; Projection, 6; Hole for first lens barrel attachment, 7; Hole for attachment of second lens barrel/image guide optical fiber east binding sheath body, 8; Image guide optical fiber bundle binding sheath body;
0; Objective lens optical system, 11, 12, 13, 14, 15
, 16; Lens, 20; First lens barrel, 21; Cylindrical portion, 22
, 22'; engaging surface, 23, 23'; inner diameter reduced part, 24;
End plate with through hole, 25; aperture member, 26.26'; aperture for aperture, 25'; aperture member part, 30; second lens barrel.

Claims

[Scope of utility model registration request]

The aperture member incorporated into the objective lens optical system of the endoscope uses a thin metal plate such as stainless steel that is separate from the lens barrel incorporated in the optical system and can be inserted into the lens barrel. ,
A diaphragm aperture is formed in this to form a diaphragm member with a black color, and this diaphragm member is inserted into the lens barrel and fixed with a lens that is inserted and fixed into the lens barrel. Characteristic objective lens optical system for internal mirrors.