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Title:
LIGHT SOURCE DEVICE AND PROJECTOR
Document Type and Number:
Japanese Patent JP2011053323
Kind Code:
A
Abstract:

To provide a light source device improving the luminance, and to provide a projector including the same.

The projector includes: the light source device; a display element; a projector control means and the like. The light source device includes: a fluorescent wheel having a fluorescence light emission area where a phosphor layer emitting green band light on receiving excitation light is formed, and a diffuse transmission area diffusing and transmitting light, on a rotation controllable base material; an excitation light source irradiating the phosphor with the excitation light of a blue wavelength band; a light-emitting element emitting red band light; a condensing optical system condensing light from the fluorescent wheel and light from the light-emitting element on the same optical path; and a light source control means controlling the light emission of the excitation light source and the light-emitting element. The green phosphor has such characteristics that even when it receives high density excitation light, little fluorescence saturation is caused.


Inventors:
OGURA NAOTADA
OGAWA MASAHIRO
NAKAMURA HIDETAKA
MIYAZAKI TAKESHI
UMAMINE OSAMU
MASUDA HIROKI
TAYA SHUICHI
KAWAKAMI YASUYUKI
NAGASAKI ATSUSHI
Application Number:
JP2009200325A
Publication Date:
March 17, 2011
Filing Date:
August 31, 2009
Export Citation:
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Assignee:
CASIO COMPUTER CO LTD
STANLEY ELECTRIC CO LTD
International Classes:
G03B21/14; G02B5/02; G02B5/08; G02B19/00
Domestic Patent References:
JPH01242688A1989-09-27
JP2008134433A2008-06-12
JP2007316607A2007-12-06
JP2006301114A2006-11-02
JP2003179259A2003-06-27
JP2005150691A2005-06-09
JP2007218956A2007-08-30
JPH01242688A1989-09-27
JP2008134433A2008-06-12
JP2007316607A2007-12-06
JP2006301114A2006-11-02
Attorney, Agent or Firm:
Kiyoshi Mizuno
Hitoshi Kitamura