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:
Jul. 27, 1999
Filed:
Aug. 23, 1996
Masao Yajima, Shimosuwa-machi, JP;
Kazuo Higashiura, Shimosuwa-machi, JP;
Sankyo Seiki Mfg. Co., Ltd., Nagano-ken, JP;
Abstract
An automatic focusing apparatus to be used for an optical system comprises an image pickup device for picking up an image of the subject supported on a support by way of the optical system and transmitting video signals for the subject, an extracting device for extracting only the video signals corresponding to the pitch of movement of focus adjustment from the signals transmitted from the image pickup device and an in-focus state detecting device for determining the in-focus position of the subject with the area for in-focus detection determined by the pitch setting device and a drive for moving either the support or the optical system for focus adjustment depending on the result of detection of the in-focus state detecting device.