Invention Grant
- Patent Title: Image display apparatus having a plurality of light-shielding members
- Patent Title (中): 具有多个遮光部件的图像显示装置
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Application No.: US12369985Application Date: 2009-02-12
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Publication No.: US08007112B2Publication Date: 2011-08-30
- Inventor: Hidetomo Tanaka
- Applicant: Hidetomo Tanaka
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Canon U.S.A. Inc., I.P. Division
- Priority: JP2008-030006 20080212
- Main IPC: G03B21/00
- IPC: G03B21/00

Abstract:
An image display apparatus includes a light source, a color separation unit configured to separate light from the light source into colored light beams, liquid crystal display devices each configured to modulate a corresponding one of the colored light beams in accordance with an image signal, light-shielding members each configured to block light that enters an area outside an effective display area of a corresponding one of the liquid crystal display devices, a color combination unit configured to combine the colored light beams that have been modulated by the liquid crystal display devices, and a projection unit configured to project light produced by combining the colored light beams with the color combination unit, wherein the liquid crystal display devices are fixed to a heatsink, and wherein the light-shielding members each include a base member fixed to the heatsink and a mask member detachably mounted on the base member.
Public/Granted literature
- US20090201468A1 IMAGE DISPLAY APPARATUS Public/Granted day:2009-08-13
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