Title:
Light equipment and a projector
Document Type and Number:
Japanese Patent JP6202654
Kind Code:
B2
Abstract:
A light source device includes a light source, a phosphor unit that includes a phosphor region and a reflection region and that is movable so that blue light from the light source is sequentially radiated to the phosphor region and the reflection region, and a dichroic mirror that guides the first linearly polarized light of the blue light from the light source to the phosphor unit and on which fluorescent light from the phosphor region and the blue light from the reflection region are made incident. A ¼ wavelength plate is provided on an optical path between the dichroic mirror and the phosphor unit, and a polarized light separating element is provided on an optical path between the dichroic mirror and the light source. The dichroic mirror is disposed so that the incident angle of the central beam of the blue light from the reflection region is larger than 45°.
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Inventors:
Masaaki Matsubara
Osamu Wakabayashi
Osamu Wakabayashi
Application Number:
JP2016511196A
Publication Date:
September 27, 2017
Filing Date:
March 31, 2014
Export Citation:
Assignee:
NEC Display Solutions Co., Ltd.
International Classes:
G03B21/14; G02B5/20; G02B5/30; G02B19/00; G03B21/00; H04N5/74
Domestic Patent References:
| JP2012212129A | ||||
| JP201592224A | ||||
| JP2013117705A |
Foreign References:
| US20140016297 |
Attorney, Agent or Firm:
Akio Miyazaki
Masaaki Ogata
Masaaki Ogata
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