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:
Jan. 17, 2017
Filed:
Jan. 29, 2015
Olympus Corporation, Hachioji-shi, Tokyo, JP;
Shingo Miyazawa, Hino, JP;
Olympus Corporation, Tokyo, JP;
Abstract
A focus adjustment device has an image sensor for forming a subject image using light flux that has been received through a photographing lens, and generating image signals, and executes focus adjustment based on the image signals. This focus adjustment device comprises a focus detection region setting section for setting a plurality of focus detection regions of differing sizes, within a region in which an image is formed by the image sensor, a determination section, for detecting contrast of image signals within focus detection regions respectively relating to the plurality of focus detection regions, and determining change of a subject based on amount of change of the contrast and temporal change in amount of change of the contrast, and a control section for, in a case where the determination section has determined that there is subject change when a focus adjustment operation is stopped, starting the focus adjustment operation.