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:
Oct. 22, 1996
Filed:
Jun. 15, 1995
Masatoshi Kanzaki, Kanagawa-ken, JP;
Kimio Uematsu, Tokyo, JP;
Nikon Corporation, Tokyo, JP;
Abstract
A diaphragm control device for a camera capable of controlling a diaphragm member with a high level of precision is disclosed. The camera and diaphragm control device are equipped with a mirror member that moves from the down position to the up position during shooting of a subject, a mirror driving device to drive the mirror member, a diaphragm mechanism connected with the mirror member to control light rays from the subject, a diaphragm driving device to drive the diaphragm mechanism, a stopping device to stop the diaphragm driving device, and a control device to control the diaphragm driving device and the stopping device to stop the diaphragm mechanism at about a predetermined position. A correction device correct changes in the stopping characteristics of the stopping device to precisely stop the diaphragm mechanism at the predetermined position.