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. 02, 1984
Filed:
Sep. 13, 1982
Applicant:
Inventor:
Yosuke Kusaka, Kawasaki, JP;
Assignee:
Nippon Kagaku K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354408 ;
Abstract
An automatic focusing device is capable of providing stable operation in a range close to the in-focus position, without degrading resopnse outside the range. In the focusing device, a photographic lens is driven, outside a range close to the in-focus position, according to a focusing signal, but, within said range, according to a control signal so modified as not to reflect very fast changes in the focusing signal.