JPS63198020U

JPS63198020U -

Info

Publication number: JPS63198020U
Application number: JP9002487U
Authority: JP
Priority date: 1987-06-11
Filing date: 1987-06-11
Publication date: 1988-12-20

Description

[Brief explanation of drawings]

第１図はこの考案に係る内視鏡用アタツチメン
トの一実施例を示す光学部品の配置説明図、第２
図は第１図に示した内視鏡用アタツチメントに適
用される光束分離プリズムの側面図、第３図は第
２図に示したプリズムの斜視図、第４図は第２図
に示したプリズムの分解斜視図、第５図はハーフ
ミラープリズムによる光束の分離を説明するため
の光路図、第６図はペンタプリズムを利用した従
来の内視鏡用アタツチメントを示す第４図と同様
な図である。１０……光束分離プリズム、１１……入射端面
、１２……第１出射端面、１３……第２出射端面
、１４……第１反射面、１５……第２反射面、１
００……内視鏡用アタツチメント、１３０……肉
眼観察用光学系、１４０……撮影用光学系、ｌ_１……第１光軸、ｌ_２……第２光軸。 FIG. 1 is an explanatory diagram of the arrangement of optical components showing one embodiment of the attachment for an endoscope according to this invention, and FIG.
The figure is a side view of the beam splitting prism applied to the endoscope attachment shown in Figure 1, Figure 3 is a perspective view of the prism shown in Figure 2, and Figure 4 is the prism shown in Figure 2. 5 is an optical path diagram for explaining the separation of light beams by a half mirror prism, and FIG. 6 is a diagram similar to FIG. 4 showing a conventional endoscope attachment using a pentaprism. be. DESCRIPTION OF SYMBOLS 10...Light beam separation prism, 11...Incidence end surface, 12...First emission end surface, 13...Second emission end surface, 14...First reflection surface, 15...Second reflection surface, 1
00... Attachment for endoscope, 130... Optical system for naked eye observation, 140... Optical system for photographing, l ₁ ...first optical axis, l ₂ ...second optical axis.

Claims

[Claims for Utility Model Registration] An optical system for visual observation having a first optical axis coinciding with the optical axis of an endoscope, an optical system for photographing having a second optical axis orthogonal to the first optical axis, In an attachment for an endoscope, the attachment includes a beam separating prism that separates a beam incident from an endoscope and makes it enter the two optical systems, wherein the beam separating prism is arranged perpendicularly to the first optical axis. an end surface and a first output end surface, a first reflective surface provided between the input end surface and the first output end surface, a second output end surface provided perpendicularly to the second optical axis, and the first optical axis. and a second reflective surface provided between the first reflective surface and the second output end surface, and the light beam reflected by the first reflective surface is directed to the incident end surface;
The configuration is such that the light is reflected in order from the second output end surface and the second reflective surface and then exits from the second output end surface, and the intersection of the first optical axis and the first reflective surface is
An attachment for an endoscope, characterized in that the attachment is configured to be located closer to the incident end surface than the intersection of the first optical axis and the second optical axis.