发明名称 Selective closure of camera viewfinder and camera incorporating same
摘要 A camera of the self-developing type closes the viewfinder during the advance of an exposed but unprocessed film unit across the viewfinder path. A blade coupled with the shutter closes the viewfinder path upon opening of the shutter. Subsequent passage of an exposed film unit across the viewfinder path, which delivers the film unit to processing elements which initiate fixing of the photographic image, releases the blade for return to the open position. The shutter cocking movement provides the motion for opening the viewfinder capping blade.
申请公布号 US4086604(A) 申请公布日期 1978.04.25
申请号 US19760720047 申请日期 1976.09.02
申请人 POLAROID CORPORATION 发明人 DOUGLAS, LAWRENCE M.
分类号 G03B11/00;G03B17/52;(IPC1-7):G03B13/02 主分类号 G03B11/00
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