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	Light-source device and endoscope system
	OOHASHI, EIJI; MORIMOTO, YOSHINORI; INOUE, TOSHIYUKI; SAITO, MAKI
	2013-12-05
著作权人	FUJIFILM CORPORATION
专利号	WO2013179961A1
国家	世界知识产权组织
文献子类	发明申请
其他题名	Light-source device and endoscope system
英文摘要	In the present invention, the cross-section of a beam from a light-emitting element is shaped, with light-transmission losses reduced. A light-source device (13) for an endoscope is provided with the following: a light-emitting-element part (71) that has a laser diode (LD2); and a light-source module that has a beam-shaping part (73). Said beam-shaping part (73) is a prism-shaped light-guiding rod, and the cross-section thereof perpendicular to an optical axis (A) is hexagonal. A substantially elliptical beam emitted by the laser diode (LD2) is shaped by the beam-shaping part (73) into a substantially circular shape. When a minor-axis component (RS) of the elliptical beam enters the beam-shaping part (73), said minor-axis component (RS) is guided in the direction of the optical axis (A) while undergoing total internal reflection at the interior surface of a side face (73b) of the beam-shaping part (73). As the beam is being thus guided, since minor-axis components (RS) are incident upon sides of the hexagon at non-perpendicular angles, said minor-axis components (RS) are reflected at angles, causing rotation about the optical axis (A). Many of the light rays constituting the beam undergo such rotation, shaping the cross-section of the beam into a substantially circular shape.
公开日期	2013-12-05
申请日期	2013-05-22
状态	未确认
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/58860]
专题	半导体激光器专利数据库
作者单位	FUJIFILM CORPORATION
推荐引用方式 GB/T 7714	OOHASHI, EIJI,MORIMOTO, YOSHINORI,INOUE, TOSHIYUKI,et al. Light-source device and endoscope system. WO2013179961A1. 2013-12-05.

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