Lighting optical system and projection display device including the same

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	Lighting optical system and projection display device including the same
其他题名	Lighting optical system and projection display device including the same
	SAITOU, HIROYUKI
	2013-09-19
专利权人	NEC DISPLAY SOLUTIONS, LTD.
公开日期	2013-09-19
授权国家	美国
专利类型	发明申请
摘要	A lighting optical includes a first light source for emitting first and second color lights and, and a second light source for emitting a third color light. The first light source includes a semiconductor laser element that emits a linearly polarized laser beam, an excitation light generation unit for spatially and temporally separating the laser beam from semiconductor laser element to generate first and second excitation lights and, a first phosphor that emits a first color light by first excitation light, and a second phosphor that emits a second color light by second excitation light. The excitation light generation unit includes a liquid crystal element that converts the incident laser beam into two lights orthogonal to each other in polarization direction, and a light space separation unit for spatially separating the two lights into first and second excitation lights and according to the difference between the two lights in polarization direction.
其他摘要	照明光学系统包括用于发射第一和第二色光的第一光源，以及用于发射第三色光的第二光源。第一光源包括发射线性偏振激光束的半导体激光器元件，用于在空间上和时间上将激光束与半导体激光器元件分离以产生第一和第二激发光的激发光产生单元，以及发射第一光源的第一荧光体第一激发光使彩色光和第二激发光发射第二彩色光的第二荧光粉。激发光产生单元包括：液晶元件，将入射的激光束转换成在偏振方向上彼此正交的两个光;以及光空间分离单元，用于将两个光在空间上分成第一和第二激发光并根据差异两个光之间的偏振方向。
主权项	A lighting optical system comprising: a first light source for emitting first color light and second color light; and a second light source for emitting third color light,wherein the first light source includes: a laser element that emits a linearly polarized laser beam; an excitation light generation unit for spatially and temporally separating the laser beam emitted from the laser to generate first excitation light and second excitation light; a first phosphor that is excited by the first excitation light to emit first color light; and a second phosphor that is excited by the second excitation light to emit second color light,wherein the excitation light generation unit includes: a liquid crystal element that converts the incident laser beam into two lights orthogonal to each other in polarization direction; and a light space separation unit for spatially separating the two lights converted by the liquid crystal element into the first excitation light and the second excitation light according to a difference between the two lights in polarization direction.
申请日期	2010-12-08
专利号	US20130242264A1
专利状态	失效
申请号	US13/988505
公开（公告）号	US20130242264A1
IPC 分类号	G03B21/14 \| F21V9/14
专利代理人	-
代理机构	-
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/58600
专题	半导体激光器专利数据库
作者单位	NEC DISPLAY SOLUTIONS, LTD.
推荐引用方式 GB/T 7714	SAITOU, HIROYUKI. Lighting optical system and projection display device including the same. US20130242264A1[P]. 2013-09-19.