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:
Dec. 26, 1989
Filed:
Dec. 06, 1988
Ryota Ogawa, Kawagoe, JP;
Shigeo Toji, Tokyo, JP;
Kazushi Yoshida, Tokyo, JP;
Zenichi Okura, Ichikawa, JP;
Asahi Kogaku Kogyo K.K., Tokyo, JP;
Abstract
In an autofocus camera, at least one lens of a photographing lens system serves as a focus lens which is reciprocatively moved by a drive unit along a predetermined optical path. A detector detects a position of the focus lens in the lens system. On the basis of the detected position, a calculator calculates a correction amount of a spherical aberration of the lens system. A controller controls the drive unit on the basis of the calculated correction amount so as to cause the drive unit to move the focus lens to a position where the spherical aberration of the lens system is corrected.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile