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1. 发明授权

US3898512A Photoflash lamp array sequencing circuits 失效
标题翻译：闪光灯阵列排序电路
公开(公告)号：US3898512A
公开(公告)日：1975-08-05
申请号：US44928074
申请日：1974-03-08
申请人： BERKEY PHOTO INC
发明人： BUCK ROBERT J
IPC分类号： F21K5/12 , G03B15/04 , F21K5/02 , H05B43/02
CPC分类号： G03B15/04 , F21K5/023
摘要： Circuits for sequentially actuating a plurality of photoflash lamps upon successive operations of the shutter of an associated camera are disclosed utilizing gate controlled switching devices coupled in series with the photoflash lamps across a capacitor, the capacitor supplying the current required to flash the lamps. A light emitting diode is included which provides the camera operator a visual indication when the last lamp has been fired. Circuitry is also provided for defeating operation of the sequencing circuit when the ambient light level is sufficiently high that no photoflash is required for the taking of a photograph.
摘要翻译：公开了在相关联的摄像机的快门的连续操作时顺序地致动多个照明闪光灯的电路，利用栅极控制的开关装置，其与闪光灯与电容器串联耦合，电容器提供闪光灯所需的电流。包括一个发光二极管，当最后一盏灯被点火时，可为摄像机操作员提供一个视觉指示。当环境光线水平足够高以至拍照时不需要闪光灯时，还提供电路来消除排序电路的操作。

2. 发明授权

US3875471A Photoflash source control circuit 失效
标题翻译：闪光源控制电路
公开(公告)号：US3875471A
公开(公告)日：1975-04-01
申请号：US43483974
申请日：1974-01-18
申请人： BERKEY PHOTO INC
发明人： BUCK ROBERT J
IPC分类号： G03B15/05 , H05B41/32 , H05B41/36
CPC分类号： H05B41/325 , H05B41/32
摘要： Circuits for controlling the amount of light received from a subject being photographed and terminating the operation of a flash lamp are disclosed. The circuits include a photosensitive element producing a signal related to the light received from the subject and a signal generator producing a signal having a predetermined function of time. The two signals are combined and when they achieve a predetermined relationship, the operation of the flash lamp is terminated.
摘要翻译：公开了用于控制从拍摄对象接收的光量并终止闪光灯的操作的电路。电路包括产生与从被摄体接收的光有关的信号的光敏元件和产生具有预定时间功能的信号的信号发生器。两个信号被组合，并且当它们达到预定关系时，闪光灯的操作终止。

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