Invention Grant
- Patent Title: Projector
- Patent Title (中): 投影机
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Application No.: US12642259Application Date: 2009-12-18
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Publication No.: US08398244B2Publication Date: 2013-03-19
- Inventor: Toshihiro Shimizu , Katsumi Tanaka
- Applicant: Toshihiro Shimizu , Katsumi Tanaka
- Applicant Address: JP Tokyo
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oliff & Berridge, PLC
- Priority: JP2008-329369 20081225
- Main IPC: G03B21/14
- IPC: G03B21/14

Abstract:
A projector includes: a light source that emits light; a first lens array that divides the light emitted from the light source into a plurality of partial light beams; a second lens array that focuses the plurality of partial light beams emitted from the first lens array; condenser lenses that superimpose the plurality of partial light beams emitted from the second lens array on target illumination regions; and liquid crystal panels that modulate the light beams passing through the condenser lenses according to image information, wherein each of the condenser lenses is a single lens that achieves telecentric illumination when superimposing the partial light beams, and only the condenser lenses are arranged as lenses between the second lens array and the liquid crystal panels.
Public/Granted literature
- US20100165299A1 PROJECTOR Public/Granted day:2010-07-01
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