Title:
ELECTRONIC SHUTTER DEVICE FOR STILL CAMERA
Document Type and Number:
Japanese Patent JPS59195230
Kind Code:
A
Abstract:
An electronic shutter mechanism for a still camera comprises a shutter blade, preferably carrying a solenoid armature, urged by a first spring into an initial lens aperture closing position. An initially latched actuating member for moving the shutter blade to a lens aperture exposing position carries a normally energized solenoid coil to attract the shutter blade carried armature thereto so that the shutter blade moves with the actuating member until the coil is deenergized. When the actuating member is unlatched, a second spring urges the actuating member and the shutter blade magnetically attached thereto into a lens aperture opening position against the return force of the first spring. Upon the unlatching of the actuating member a timing circuit establishes a timing period depending upon the amount of ambient light, after which the solenoid coil is deenergized so the first spring returns the shutter blade quickly to a lens aperture closing position.
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| JPS5943539 | [Title of the device] Shutter device |
Inventors:
WAN CHIYAMU UON
OOSHIMA SHIGERU
OOSHIMA SHIGERU
Application Number:
JP5522484A
Publication Date:
November 06, 1984
Filing Date:
March 21, 1984
Export Citation:
Assignee:
W HEIKINGU ENTAPURAIZEZU LTD
International Classes:
G03B9/24; G03B9/40; G03B9/42; G03B9/62; (IPC1-7): G03B9/24; G03B9/40
Domestic Patent References:
| JPS4976522A | 1974-07-24 |
Attorney, Agent or Firm:
Takesaburo Nagata