发明名称 |
Automatic exposure control circuit for camera |
摘要 |
An automatic exposure control circuit for camera having the capability to control the amount of light emitted by a flash discharge tube of an electronic flash comprises bias current booster means which becomes operative as the flash discharge tubes begins to emit light, thereby increasing the speed of response of the control circuit without increasing an input current thereto.
|
申请公布号 |
US4309092(A) |
申请公布日期 |
1982.01.05 |
申请号 |
US19810227773 |
申请日期 |
1981.01.23 |
申请人 |
OLYMPUS OPTICAL CO., LTD. |
发明人 |
KITAGAWA, MASAHIRO |
分类号 |
G03B7/083;G03B7/16;G03B15/05;(IPC1-7):G03B7/08 |
主分类号 |
G03B7/083 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|