Invention Grant
- Patent Title: Projector
- Patent Title (中): 投影机
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Application No.: US12897343Application Date: 2010-10-04
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Publication No.: US08523363B2Publication Date: 2013-09-03
- Inventor: Susumu Aruga
- Applicant: Susumu Aruga
- Applicant Address: JP Tokyo
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oliff & Berridge, PLC
- Priority: JP2009-235242 20091009; JP2010-181294 20100813
- Main IPC: G03B21/28
- IPC: G03B21/28 ; H01K1/30

Abstract:
A projector includes: a light source that emits light having an asymmetric illuminance distribution; a light modulation device that modulates the light emitted from the light source; and an optical member disposed in an optical path between the light source and the light modulation device, the optical member changing the illuminance distribution of the light from the light source, wherein the optical member changes the illuminance distribution of the light passing therethrough in such a way that a highest illuminance area in the illuminance distribution of the light after passing through the optical member is shifted toward the center of the optical member as compared with the position of the highest illuminance area in the illuminance distribution of the light before incident on the optical member.
Public/Granted literature
- US20110085143A1 PROJECTOR Public/Granted day:2011-04-14
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