Invention Grant
- Patent Title: Projector
- Patent Title (中): 投影机
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Application No.: US13973469Application Date: 2013-08-22
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Publication No.: US08727541B2Publication Date: 2014-05-20
- Inventor: Tsuyoshi Kaneko , Takashi Takeda
- Applicant: Seiko Epson Corporation
- Applicant Address: JP
- Assignee: Seiko Epson Corporation
- Current Assignee: Seiko Epson Corporation
- Current Assignee Address: JP
- Agency: Harness, Dickey & Pierce, P.L.C.
- Priority: JP2009-217191 20090918
- Main IPC: G03B21/26
- IPC: G03B21/26 ; F21V5/00 ; F21V5/02 ; H01L33/00

Abstract:
A projector includes: a light emitter; a light modulator modulating light from the light emitter; and a projector projecting the image from the light modulator. The light emitter includes a light emitting element and an optical member. The light emitting element is a super luminescent diode having an active layer constituting first and second gain regions sandwiched between first and second cladding layers. The first gain region is tilted in a clockwise direction relative a perpendicular of a first surface of the stacked structure. The second gain region is tilted in a counterclockwise direction relative to a perpendicular of the first surface. As such, the optical member refracts the light respectively emitted from the end surfaces of the first and second gain regions on the second surface side to thereby emit light beams in the same direction.
Public/Granted literature
- US20130342815A1 PROJECTOR Public/Granted day:2013-12-26
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