Invention Grant
- Patent Title: Projection display apparatus and actuation control method thereof
- Patent Title (中): 投影显示装置及其致动控制方法
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Application No.: US12583829Application Date: 2009-08-26
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Publication No.: US08636368B2Publication Date: 2014-01-28
- Inventor: Kiyohiro Oka , Kenichiro Kuroda
- Applicant: Kiyohiro Oka , Kenichiro Kuroda
- Applicant Address: JP
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP
- Agency: Lerner, David, Littenberg, Krumholz & Mentlik, LLP
- Priority: JPP2008-225979 20080903
- Main IPC: G03B21/14
- IPC: G03B21/14

Abstract:
A projection display apparatus and an actuation control method thereof are provided. A projection display apparatus includes an apparatus body that forms an optical image projected on a screen, a projection lens that projects the optical image formed by the apparatus body on the screen, a lens actuator that allows the projection lens to be shifted in a vertical direction or in a horizontal direction relative to the apparatus body, and a shift controller that limits a range of shift movement by the lens actuator such that a center position of the projection lens does not go outside of a quadrangle region of which the intersection point of diagonals is located coaxially with the position of the optical axis of the apparatus body.
Public/Granted literature
- US20100053572A1 Projection display apparatus and actuation control method thereof Public/Granted day:2010-03-04
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