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	Single-emitter etendue aspect ratio scaler
	COBB, JOSHUA
	2015-12-23
著作权人	CORNING INCORPORATED
专利号	EP2667238A3
国家	欧洲专利局
文献子类	发明申请
其他题名	Single-emitter etendue aspect ratio scaler
英文摘要	An apparatus (12) emits a laser light beam with a first aspect ratio of etendue R1, wherein the optical invariant with respect to a first direction is less than half the optical invariant with respect to a second orthogonal direction. A first cylindrical lens (15) collimates the beam in the first direction. A second cylindrical lens (14) collimates the light beam in the second direction resulting in an elliptical beam shape (24). A bisecting reflective surface (72) has an edge (73) that splits the collimated beam into undeviated (42) and first deviated (44) beam paths (24a,24b). A folding reflective surface (76) redirects the first deviated beam path back toward the bisecting reflective surface, optically parallel with and displaced from the undeviated beam path with respect to the first direction. At least a portion of the redirected first deviated beam path passes the edge and combines with the undeviated path to form an output beam having a second aspect ratio of etendue R2 not equal to R1 and comprising the two cut beam parts (24a,24b) vertically stacked, for example, for optimized focusing into an optical fiber (20).
公开日期	2015-12-23
申请日期	2013-06-14
状态	申请中
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/54439]
专题	半导体激光器专利数据库
作者单位	CORNING INCORPORATED
推荐引用方式 GB/T 7714	COBB, JOSHUA. Single-emitter etendue aspect ratio scaler. EP2667238A3. 2015-12-23.

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