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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.:

US 10250793 B1

PDFFull Text
Date of Patent:
Apr. 02, 2019

Filed:

Jun. 28, 2012

Focus adjustment device having a control unit that drives a focus adjustment optical system to a focused position acquired first by either a contrast detection system or a phase difference detection system

Applicants:

Hiroaki Takahara, Matsudo, JP;

Hiroyuki Tomita, Yokohama, JP;

Inventors:

Hiroaki Takahara, Matsudo, JP;

Hiroyuki Tomita, Yokohama, JP;

Assignee:

NIKON CORPORATION, Tokyo, JP;

Attorney:

Oliff PLC

Primary Examiner:

James M Hannett

Int. Cl.
CPC ...
H04N 5/232 (2006.01); G02B 7/36 (2006.01); H04N 5/369 (2011.01); G02B 7/34 (2006.01); G02B 7/28 (2006.01); G03B 13/36 (2006.01);
U.S. Cl.
CPC ...
H04N 5/23212 (2013.01); G02B 7/285 (2013.01); G02B 7/346 (2013.01); G02B 7/36 (2013.01); H04N 5/3696 (2013.01); G03B 13/36 (2013.01); H04N 5/23209 (2013.01);
Abstract

A focus adjustment device comprising: a first detectorwhich detects a focused state by a contrast detection system; second detectorswhich detect a focused state by a phase difference detection system; and a control unitwhich controls the first detectorand second detectorsso as to detect the focused state by the second detectorswhen detecting the focused state by the first detector

Find Patent Forward Citations

Takahara, Hiroaki. (2019). Focus adjustment device having a control unit that drives a focus adjustment optical system to a focused position acquired first by either a contrast detection system or a phase difference detection system (U.S. Patent No. 10250793). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10250793

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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