再颁专利
USRE31585E Long time exposure preventing device for camera with electronic flash 失效
电子闪光灯相机长时间曝光防护装置

Long time exposure preventing device for camera with electronic flash
摘要:
A signal indicating that the correct exposure value has been achieved and a signal indicating the completion of flash are logically summed to provide a shutter closing signal. This ensures that the shutter will be closed even when the light emitted by the flash is insufficient to achieve the proper level of exposure.
信息查询
0/0