发明授权
- 专利标题: Photographic flash device
- 专利标题(中): 摄影闪光灯设备
-
申请号: US710927申请日: 1976-08-02
-
公开(公告)号: US4078240A公开(公告)日: 1978-03-07
- 发明人: Yoshikazu Kaneko , Hisashi Ogura
- 申请人: Yoshikazu Kaneko , Hisashi Ogura
- 申请人地址: JA Osaka
- 专利权人: West Electric Company, Ltd.
- 当前专利权人: West Electric Company, Ltd.
- 当前专利权人地址: JA Osaka
- 优先权: JA50-100853 19750819
- 主分类号: G03B15/05
- IPC分类号: G03B15/05 ; G03B7/16 ; G03B15/02 ; H05B41/14
摘要:
An automatic photographic flash device wherein the amount of light of the flash tube is automatically controlled in response to intensity of light from the direction of the photographic object by means of an electric circuit A flash tube part is movably installed on a main case part containing a battery and the circuit A switch is installed in the device in such a manner that when the flash tube part is moved to a position not directed at the photographic object, the switch causes the circuit to appropriately increase the amount of light discharged by the flash tube when it is actuated.