JPS63146814U

JPS63146814U -

Info

Publication number: JPS63146814U
Application number: JP3880887U
Authority: JP
Priority date: 1987-03-17
Filing date: 1987-03-17
Publication date: 1988-09-28

Description

[Brief explanation of the drawing]

第１図ないし第３図は本考案の第１実施例に係
り第１図は斜視型硬性内視鏡の挿入部先端部を示
す断面図、第２図は第１図の斜視図、第３図は斜
視型硬性内視鏡の全体を示す側面図、第４図は本
考案の第２実施例に係る側視型硬性内視鏡の挿入
部先端部を示す断面図、第５図は本考案の第３実
施例に係る斜視型硬性内視鏡の挿入部先端部を示
す断面図、第６図は従来の斜視型硬性内視鏡の挿
入部先端部の断面図、第７図は従来の側視型硬性
内視鏡の挿入部先端部の断面図である。３１……斜視型硬性内視鏡、３２……挿入部、
４１……外管、４３……リレーレンズ系、４４…
…対物レンズ系、４５……ライトガイド、４８…
…カバーガラス、５１……先端カバー部材、５３
……観察用開口部、５５……照明用開口部、５６
……ライトガイド通路、５７……湾曲部、５８…
…直線部。 1 to 3 relate to the first embodiment of the present invention; FIG. 1 is a sectional view showing the distal end of the insertion section of a perspective type rigid endoscope; FIG. 2 is a perspective view of FIG. 1; The figure is a side view showing the entire oblique-viewing rigid endoscope, FIG. 4 is a sectional view showing the distal end of the insertion section of the side-viewing rigid endoscope according to the second embodiment of the present invention, and FIG. A sectional view showing the distal end of the insertion section of a perspective-looking rigid endoscope according to a third embodiment of the invention, FIG. 6 is a sectional view of the distal end of the insertion section of a conventional oblique-viewing rigid endoscope, and FIG. FIG. 3 is a cross-sectional view of the distal end of the insertion section of the side-viewing rigid endoscope. 31... Strabismus type rigid endoscope, 32... Insertion section,
41...Outer tube, 43...Relay lens system, 44...
...Objective lens system, 45...Light guide, 48...
... Cover glass, 51 ... Tip cover member, 53
...Observation opening, 55...Illumination opening, 56
...Light guide passage, 57...Curved portion, 58...
...straight section.

Claims

[Claims for Utility Model Registration] (1) A light guide serving as an illumination optical system is inserted into an insertion section having an observation window at its tip, and a tip member for regulating the emission direction of the light guide is attached to the tip of the insertion section. In the endoscope, the tip member has an opening for illumination, and a light guide passage that communicates with the opening and guides the emission end side of the light guide in the illumination direction, and the light guide has an illumination opening. An endoscope, characterized in that the endoscope is inserted into and fixed in the light guide passage of the tip member. (2) The endoscope according to claim 1, wherein the observation window is provided on the tip member. (3) The light guide passage of the tip member has a curved portion that curves the light guide, and a straight portion that is provided on the tip side of the curved portion and directs the output end of the light guide toward the illumination direction. The endoscope according to claim 1 of the utility model registration claim. (4) The endoscope according to claim 1, wherein the light guide passage of the tip member curves the light guide and has a curved portion with the opening side facing the illumination direction.