The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 03, 2008
Filed:
Sep. 30, 2005
Yasuhiro Toyoda, Saitama, JP;
Yasuhiro Toyoda, Saitama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A shutter device, which is capable of achieving power-saving when holding a shutter opening in an open state for a long time by mechanically inhibiting an operation of a second light shielding plate in a direction to close the shutter opening, is provided. The shutter device has a second light shielding plate locking memberdisplaceable to a locking position to inhibit a shutter opening closing operation of the second light shielding platestoand an unlocking position to allow the shutter opening closing operation of the second light shielding plates. The second light shielding plate locking member displaces to the locking position at a point of time when first light shielding platestofully open the shutter opening, and displaces to the unlocking position immediately before the second light shielding plates start running.