JPS63165628U

JPS63165628U -

Info

Publication number: JPS63165628U
Application number: JP5754487U
Authority: JP
Priority date: 1987-04-17
Filing date: 1987-04-17
Publication date: 1988-10-28

Description

[Brief explanation of the drawing]

第１図は、本考案の一実施例を示す水中用一眼
レフカメラの分解斜視図であり、第２図は、第１
図の概略中央断面図であり、第３図は、第１図の
概略横方向部分断面図であり、第４図は、従来の
カメラの断面図であり、第５図は、第４図のカメ
ラを水中用一眼レフカメラに変更した場合想定で
きるカメラの断面図である。主要部分の符号の説明、１……本体、２……外
箱、３……裏蓋、１０……支持部材、１２……フ
アインダー、１４……バネ、Ｅ……アイポイント
、Ａ，Ｂ……スペース、ｌ……撮影レンズ光学系
の光束、ｌ_１……射出光束。 FIG. 1 is an exploded perspective view of an underwater single-lens reflex camera showing one embodiment of the present invention, and FIG.
3 is a schematic lateral partial sectional view of FIG. 1, FIG. 4 is a sectional view of a conventional camera, and FIG. 5 is a schematic sectional view of FIG. FIG. 2 is a cross-sectional view of a camera that can be assumed when the camera is changed to an underwater single-lens reflex camera. Explanation of symbols of main parts, 1...Main body, 2...Outer box, 3...Back cover, 10...Support member, 12...Finder, 14...Spring, E...Eye point, A, B... ... Space, l... Luminous flux of the photographing lens optical system, l ₁ ... Outgoing luminous flux.

Claims

[Scope of Claim for Utility Model Registration] In a viewfinder for an underwater single-lens reflex camera that has a photographic lens optical system and a back cover, the luminous flux emitted from the eyepiece is approximately 10 to 20 degrees with respect to the luminous flux of the photographic lens optical system. The viewfinder optical system is arranged so as to emit light upwardly within an angle range of A finder for an underwater single-lens reflex camera characterized by the above.