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. 16, 2016
Filed:
Dec. 07, 2015
Olympus Corporation, Shibuya-ku, Tokyo, JP;
Tetsuo Kikuchi, Hachioji, JP;
Takeshi Kindaichi, Hachioji, JP;
Olympus Corporation, Tokyo, JP;
Abstract
A focus adjustment apparatus comprising a focus detection unit to detect image phase difference information using a light flux having passed through a photographic optical system including a focus lens, and a focus adjustment unit converts first image phase difference information detected by the focus detection unit into a defocus amount using a conversion coefficient and causes the focus detection unit to detect second image phase difference information after having moved the focus lens according to the defocus amount, and corrects the conversion coefficient according to the second image phase difference information and causes a storage unit to store the corrected conversion coefficient.