发明名称 |
Battery conservation by control of the charging circuit for a built-in electronic flash |
摘要 |
A camera system has a self-contained flash unit where the supply of current from a battery to the flash unit charging capacitor is discontinued immediately after the level of charge on the capacitor reaches a predetermined full charge level and charging of the capacitor is controlled as a function of existing light conditions. The shutter release member is movable from a rest position through an intermediate position to a fully depressed position. A pivotally mounted holder member which is movable in response to the movement of the shutter release member carries an electromagnet and a pivotally mounted magnet armature which moves into and out of contact with the electromagnet in response to the energization and deenergization of the electromagnet to latch and release the shutter.
|
申请公布号 |
US4295719(A) |
申请公布日期 |
1981.10.20 |
申请号 |
US19800115191 |
申请日期 |
1980.01.25 |
申请人 |
BALDA-WERKE |
发明人 |
LANGE, KARL H. |
分类号 |
G03B7/16;G03B15/05;(IPC1-7):G03B7/08 |
主分类号 |
G03B7/16 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|