公开(公告)号：US4033682A

公开(公告)日：1977-07-05

申请号：US596018

申请日：1975-07-15

申请人： Yukio Nakamura ,  Shougo Kato ,  Shinji Nagaoka

发明人： Yukio Nakamura ,  Shougo Kato ,  Shinji Nagaoka

IPC分类号： G03B7/083 ,  G03B9/62 ,  G03B9/08

CPC分类号： G03B9/62 ,  G03B7/083

摘要： An electric shutter is opened and closed to effect an exposure in dependence upon the energization of an electromagnet. A switching circuit controls the energization of the electromagnet in accordance with various exposure information, such as diaphragm setting and film sensitivity. An exposure control circuit comprised of a series connection of a diode and a variable resistor is connected in parallel with the electromagnet and adjustably controls the time at which the electromagnet is deenergized to accordingly effect closing of the shutter such that the electromagnet delay time equals the shutter sector advancing time to thereby compensate for fluctuations between the two times.

摘要翻译： 电动快门被打开和关闭以根据电磁铁的通电而进行曝光。 开关电路根据各种曝光信息来控制电磁铁的通电，例如膜片设定和膜敏感性。 由二极管和可变电阻器的串联连接构成的曝光控制电路与电磁体并联连接，并且可调节地控制电磁铁断电的时间，从而相应地实现快门关闭，使得电磁延迟时间等于快门 从而补偿两次之间的波动。