发明名称 Electrically operated camera which selectively inhibits shutter release based on film presence
摘要 An electrically operated camera having a release means for effecting a shutter release action for the light exposure of film is capable of determining whether a film is loaded or not in the basis of the film feeding condition. A film feed detection means detects the action of a film being rewound by a film rewind means, and generates a signal upon detection. When a controller receives the signal during the film rewind action, the controller prevents the release means from effecting shutter release after the completion of the rewind action. When no signal is received during the rewind action, the controller permits the release means to effect shutter release after the completion of the rewind action. The action of the film feed condition may alternatively be detected when it is being wound by a film wind means. If it is determined that the camera is loaded with a film, release lock is effected so as to prevent the exposed frame from being subjected to any further exposure by the user. If a film unloaded state of the camera is determined, it can perform the release action, thereby facilitating the checking of its various actions.
申请公布号 US5003332(A) 申请公布日期 1991.03.26
申请号 US19900504657 申请日期 1990.04.03
申请人 NIKON CORPORATION 发明人 WATANABE, NAOKI;AMANUMA, TATSUO;OHTSUBO, YOSHIAKI
分类号 G03B17/00;G03B17/42 主分类号 G03B17/00
代理机构 代理人
主权项
地址