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. 01, 1991
Filed:
Jan. 09, 1990
Tokuji Ishida, Osaka, JP;
Masataka Hamada, Osaka, JP;
Toshio Norita, Osaka, JP;
Masayuki Ueyama, Osaka, JP;
Katsumi Kozakai, Osaka, JP;
Hiroshi Ootsuka, Osaka, JP;
Hideo Kajita, Osaka, JP;
Kenji Ishibashi, Osaka, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
An improved focus detecting apparatus comprises a photographic lens, a focus detecting device for detecting the focusing condition of the photographic lens and a lens driving means for driving the photographic lens based on the focusing condition detected, and the photographic lens is driven, in advance, to a focusing position where a frequently used magnification rate determined in accordance with the focal length of said photographic lens is attained, and then driven to an in-focus position.