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:
Jul. 27, 2004
Filed:
Jun. 19, 2002
Tohru Eguro, Itabashi-ku, JP;
Nidec Copal Corporation, Tokyo, JP;
Abstract
A lens shutter for cameras includes two base plates in which a blade chamber is provided between them and their apertures are superposed to provide a circular exposure aperture, at least one shutter blade located in the blade chamber to perform the opening and closing operation of the exposure aperture, a first motor mounted to one of the base plates outside the blade chamber so that an output port extends to the blade chamber to cause the shutter blade to perform the opening and closing operation, a light-amount control device located in the blade chamber to perform the introducing and removing operations with respect to the exposure aperture, and a second motor mounted to one of the base plates outside the blade chamber so that an output port extends to the blade chamber to cause the light-amount control means to perform the introducing and removing operations. In this case, the light-mount control device is located so that a part thereof always overlaps the shutter blade adjacent thereto in any operating condition.