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, 2022
Filed:
Sep. 17, 2020
Applicant:
Nikon Corporation, Tokyo, JP;
Inventors:
Hiroaki Takahara, Matsudo, JP;
Hiroyuki Tomita, Yokohama, JP;
Assignee:
NIKON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 5/232 (2006.01); G02B 7/36 (2021.01); G02B 7/34 (2021.01); G02B 7/28 (2021.01); H04N 9/04 (2006.01); G03B 13/36 (2021.01);
U.S. Cl.
CPC ...
H04N 5/232123 (2018.08); G02B 7/285 (2013.01); G02B 7/346 (2013.01); G02B 7/36 (2013.01); H04N 5/232122 (2018.08); H04N 9/04557 (2018.08); H04N 9/04561 (2018.08); G03B 13/36 (2013.01); H04N 5/23209 (2013.01);
Abstract
A focus adjustment device comprising: a first detector which detects a focused state by a contrast detection system; second detectors which detect a focused state by a phase difference detection system; and a control unit which controls the first detector and second detectors so as to detect the focused state by the second detectors when detecting the focused state by the first detector.