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:
Aug. 12, 1980
Filed:
Sep. 07, 1978
Konishiroku Photo Industry Co., Ltd., Nihonbaski, JP;
Abstract
An automatic focus control apparatus for a camera lens which includes a fixed and a movable optical system, each adapted to form an image of an object to be photographed on a respective photosensitive means. The movable optical system includes a rotatable mirror movable successively in opposite directions, in the first direction at a high rate of speed, and in the second direction at a low rate of speed simultaneously with lens adjustment. Signal processing means compares the signals provided by the photosensitive means and stops the lens and operates a camera shutter during movement of the mirror in the second direction when a maximum or minimum output signal compares with a selected maximum or minimum output signal generated during movement of the mirror in the first direction.