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	Apparatus for enhancing collimation and improving collection efficiency from high aspect ratio linear energy sources
	WALLACE, ROBERT E.
	1995-06-20
著作权人	NORTHROP GRUMMAN SYSTEMS CORPORATION
专利号	US5426533
国家	美国
文献子类	授权发明
其他题名	Apparatus for enhancing collimation and improving collection efficiency from high aspect ratio linear energy sources
英文摘要	There is provided an apparatus for improving power transfer or collection efficiency from a high aspect ratio linear junction laser diode to associated collimation optics in a weapon rangefinder, illuminator, laser spot projector, optical security system, or other optical device. A cylindrical or rod lens (16) is positioned adjacent to the emitting region (14) of the laser diode (10), the longitudinal axis of the rod lens (16) being parallel to the emitting region (14). Preferably, the emitting region (14) of the laser diode (10) is located at the bottom of a V-shaped surface (20) of the laser diode (10), for facilitating alignment of the rod lens (16) with the emitting region (14). The rod lens (16) may comprise a fiber optic strand of either glass or plastic material, and is small enough to be totally encapsulated within the window capped case (26) of the laser diode (10) o The cylindrical lens can be a gradient index type, holographic optical element, aspheric, or a combination of the aforementioned as well as circular cross-section rod lens. In an alternative embodiment, a rod lens (16) may be used to collect and collimate light emitted from a wire filament in a copier or page scanner, for example.
公开日期	1995-06-20
申请日期	1992-07-15
状态	失效
内容类型	专利
源URL	[http://ir.opt.ac.cn/handle/181661/44517]
专题	半导体激光器专利数据库
作者单位	NORTHROP GRUMMAN SYSTEMS CORPORATION
推荐引用方式 GB/T 7714	WALLACE, ROBERT E.. Apparatus for enhancing collimation and improving collection efficiency from high aspect ratio linear energy sources. US5426533. 1995-06-20.

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