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:
Mar. 09, 2010
Filed:
Oct. 20, 2006
Applicant:
Minoru Uchiyama, Utsunomiya, JP;
Inventor:
Minoru Uchiyama, Utsunomiya, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B 7/00 (2006.01); G03B 7/085 (2006.01);
U.S. Cl.
CPC ...
Abstract
When a difference between a diaphragm target position and a detected state of a diaphragm is less than a neutral zone width, a driving control operation of the diaphragm is prohibited. The neutral zone width can be changed depending on the state of the diaphragm.