发明名称 REFLEX MEMBER VELOCITY CONTROL MEANS
摘要 A reflex camera having an operator mechanism which positions a viewing surface closed proximate the film plane for focusing purposes, and in a subsequent exposure mode positions a reflective surface within the optical path in a position causing a coincidence of a focal plane with the film plane. A fixed specular surface is positioned in the optical path to the viewing surface in the focusing mode and said viewing surface is in spaced parallel relation to said fixed specular surface during the exposure mode. The operator mechanism is provided with positioning mechanism whereby the viewing surface approaches the fixed specular surface in a direction generally parallel to the same and at a minimized velocity so as to prevent bouncing of the viewing surface.
申请公布号 US3701304(A) 申请公布日期 1972.10.31
申请号 USD3701304 申请日期 1971.12.20
申请人 POLAROID CORP. 发明人 IRVING ERLICHMAN
分类号 G03B17/52;G03B19/12;(IPC1-7):G03B19/12 主分类号 G03B17/52
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