发明名称 |
Light source apparatus and projection apparatus |
摘要 |
A light source unit includes a red light source, a first blue-light source, a fluorescent material, a second blue light source and an optical system. The red light source emits light in red wavelength range. The first blue-light source emits light in a first blue-wavelength range. The fluorescent material receives the light in the first blue-wavelength range and emits light in a green wavelength range. The second blue-light source emits light in a second blue-wavelength range whose wavelengths are longer than those in the first blue-wavelength range. An optical system guides the light emitted from the red light source, the light emitted from the second blue-light source, and the light emitted from the fluorescent material, along a unique optical path. |
申请公布号 |
US9366948(B2) |
申请公布日期 |
2016.06.14 |
申请号 |
US201514743736 |
申请日期 |
2015.06.18 |
申请人 |
CASIO COMPUTER CO., LTD. |
发明人 |
Miyazaki Takeshi |
分类号 |
G03B21/00;G03B21/20;G02B27/10;H04N9/31 |
主分类号 |
G03B21/00 |
代理机构 |
Holtz, Holtz & Volek PC |
代理人 |
Holtz, Holtz & Volek PC |
主权项 |
1. A light source apparatus comprising:
a first blue-light source which emits light in a first blue-wavelength range; a second blue-light source which emits light in a second blue-wavelength range having wavelengths longer than the wavelengths in the first blue-wavelengths range; and an optical-path switch controller which time-divisionally performs (1) a first operation of guiding the light in the first blue-wavelength range and the light in the second blue-wavelength range to a first optical-guide system, and (2) a second operation of guiding the light in the first blue-wavelength range to the first optical-guide system and the light in the second blue-wavelength range to a second optical-guide system, wherein the optical-path controller performs control such that in the first operation, the light in the first blue-wavelength range and the light in the second blue-wavelength range have respectively different planes of polarization. |
地址 |
Tokyo JP |