- Patent Title: 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
-
Application No.: US13536000Application Date: 2012-06-28
-
Publication No.: US10250793B2Publication Date: 2019-04-02
- Inventor: Hiroaki Takahara , Hiroyuki Tomita
- Applicant: Hiroaki Takahara , Hiroyuki Tomita
- Applicant Address: JP Tokyo
- Assignee: NIKON CORPORATION
- Current Assignee: NIKON CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Priority: JP2011-144723 20110629; JP2011-144750 20110629; JP2011-145268 20110630
- Main IPC: H04N5/232
- IPC: H04N5/232 ; G02B7/36 ; H04N5/369 ; G02B7/34 ; G02B7/28 ; G03B13/36
Abstract:
A focus adjustment device comprising: a first detector 221 which detects a focused state by a contrast detection system; second detectors 222a, 222b which detect a focused state by a phase difference detection system; and a control unit 21 which controls the first detector 221 and second detectors 222a, 222b so as to detect the focused state by the second detectors 222a, 222b when detecting the focused state by the first detector 221.
Public/Granted literature
- US20130010179A1 FOCUS ADJUSTMENT DEVICE AND IMAGING APPARATUS Public/Granted day:2013-01-10
Information query
