Invention Grant
- Patent Title: Optical member driving apparatus and projection type image display apparatus
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Application No.: US15192751Application Date: 2016-06-24
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Publication No.: US10168603B2Publication Date: 2019-01-01
- Inventor: Takaaki Gyoten , Nobuyuki Kondo , Ken Mashitani
- Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Applicant Address: JP Osaka
- Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
- Current Assignee Address: JP Osaka
- Agency: Hamre, Schumann, Mueller & Larson, P.C.
- Priority: JP2013-271266 20131227
- Main IPC: G03B21/14
- IPC: G03B21/14 ; G03B21/20 ; G02B26/08 ; G02B27/48 ; H04N9/31 ; G02B26/00

Abstract:
An optical member driving apparatus includes an optical member for changing an optical path, a plurality of actuators each having a movable member which is controlled to move in one direction, a plurality of connecting members which connect edge portions of the optical member positioned on two axes orthogonal to each other and the movable members of the plurality of actuators, respectively, a position detector for detecting a moving amount of the movable member of each actuator and outputting a detection signal indicating the moving amount, and a controller for controlling movement of the movable member of each actuator based on the detection signal from the position detector so as to keep an intersection point of the two axes at constant position.
Public/Granted literature
- US20160306269A1 OPTICAL MEMBER DRIVING APPARATUS AND PROJECTION TYPE IMAGE DISPLAY APPARATUS Public/Granted day:2016-10-20
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