发明名称 COMPOUND FINDER OPTICAL SYSTEM OF (4.5x6) FORMAT SINGLE-LENS REFLEX CAMERA
摘要 PROBLEM TO BE SOLVED: To form a camera having two optical systems such as a single-lens reflex type having one eyepiece in common and a range finder type. SOLUTION: The camera in which a mirror is assembled, whose front side a lens barrel is attached to, and also which has a mirror housing part provided with an exposure surface on a back side has a single-lens reflex type finder optical path forming a visible image which can be observed by an eyepiece having an optical axis which does not share a plane with the optical axis of a condenser lens through the condenser lens, a prismatic prism and a relay lens from an image reflected from the mirror and formed on a focusing glass at a position conjugate to the exposure surface, and a range finder type finder optical path forming the visible image which can be observed by the eyepiece from a double image composed of a real image formed by a prism having a roof surface and a convex lens and a virtual image formed by a concave lens. COPYRIGHT: (C)2005,JPO&NCIPI
申请公布号 JP2005031705(A) 申请公布日期 2005.02.03
申请号 JP20040298189 申请日期 2004.09.13
申请人 SUGA SHIGERU 发明人 SUGA SHIGERU
分类号 G03B13/06;G03B13/20;G03B17/02;G03B17/14;(IPC1-7):G03B13/06 主分类号 G03B13/06
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