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:
Sep. 05, 1995
Filed:
Nov. 22, 1994
Takaaki Kobayashi, Yokohama, JP;
Susumu Fukita, Kawasaki, JP;
Yuzo Kato, Yokohama, JP;
Jun Hosoya, Yokohama, JP;
Ryuji Ohmuro, Yokohama, JP;
Junichi Kasuya, Kawasaki, JP;
Setsuo Yoshida, Yokohama, JP;
Noboru Suzuki, Yokahama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention relates to an apparatus for controlling the lens position of a zoom lens. The zoom lens comprises a plurality of lens units movable along the optical axis for zooming, a focal length setting unit for setting the focal length of the zoom lens, an object distance setting unit for setting an object distance, a store containing a plurality of inherent coefficients and an arithmetic logic unit which specifies focal length information and object distance information as variables, and uses the coefficients in calculating a position to which a lens unit should move.