Title:
AUTOMATIC EXPOSURE CONTROL DEVICE
Document Type and Number:
Japanese Patent JPS5237428
Kind Code:
A
Abstract:
PURPOSE: To assure the closure maintenance of a shutter blade at the time of deenergization by preventing an erroneous exposure in an automatic control device wherein an exposure due to the open-and-close of the shutter blade is automatically controlled by controlling an electromotive drive source which opens-and-closes the shutter blade in response to the brightness of an object.
Inventors:
IWATA HIROSHI
YAMAOKA TETSUO
YAMAOKA TETSUO
Application Number:
JP11414175A
Publication Date:
March 23, 1977
Filing Date:
September 19, 1975
Export Citation:
Assignee:
WEST ELECTRIC CO
International Classes:
G03B9/10; G03B9/08; (IPC1-7): G03B7/08; G03B9/08
Domestic Patent References:
| JPS5017635A | 1975-02-25 |