Invention Grant
- Patent Title: Video display device and light guide module with a light shielding plate having a plurality of openings
- Patent Title (中): 视频显示装置以及具有多个开口的遮光板的导光模块
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Application No.: US13352056Application Date: 2012-01-17
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Publication No.: US08690356B2Publication Date: 2014-04-08
- Inventor: Yoshinori Kakuta
- Applicant: Yoshinori Kakuta
- Applicant Address: JP Tokyo
- Assignee: Mitsubishi Electric Corporation
- Current Assignee: Mitsubishi Electric Corporation
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2011-017469 20110131
- Main IPC: G03B21/14
- IPC: G03B21/14

Abstract:
A video display device includes a light guide unit for guiding outgoing light from a light source unit to a pixel area of a display device. The light guide unit includes a rod integrator having an input opening through which the outgoing light from the light source unit enters and an output opening provided on a side opposite to the input opening, and a light shielding plate provided between the input opening of the rod integrator and the light source unit. The light shielding plate has a plurality of types of openings for passing the outgoing light from the light source unit to the rod integrator. The light shielding plate is arranged in a state where one of the plurality of types of openings, which has a shape similar to that of the input opening of the rod integrator which is actually mounted, is aligned with the input opening.
Public/Granted literature
- US20120194748A1 VIDEO DISPLAY DEVICE AND LIGHT GUIDE MODULE Public/Granted day:2012-08-02
Information query