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, 2014
Filed:
Mar. 26, 2013
Applicant:
Nikon Corporation, Tokyo, JP;
Inventor:
Masaru Shida, Sendai, JP;
Assignee:
Nikon Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 7/10 (2006.01); G03B 9/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
An aperture control device includes: an aperture first driving member that controls an aperture of a diaphragm through which light flux passes; an aperture second driving member that drives the aperture first driving member; a motor that drives the aperture second driving member; a detection device that detects start of movement of the aperture first driving member caused by the aperture second driving member driven by the motor; and a motor control device that controls an aperture value of the diaphragm by controlling a rotational amount of the motor after the detection device detects the start of movement of the aperture first driving member.