Apparatus for enhancing collimation and improving collection efficiency from high aspect ratio linear energy sources

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	Apparatus for enhancing collimation and improving collection efficiency from high aspect ratio linear energy sources
其他题名	Apparatus for enhancing collimation and improving collection efficiency from high aspect ratio linear energy sources
	WALLACE, ROBERT E.
	1995-06-20
专利权人	NORTHROP GRUMMAN SYSTEMS CORPORATION
公开日期	1995-06-20
授权国家	美国
专利类型	授权发明
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.
其他摘要	提供了一种用于改善从高纵横比线性结激光二极管到武器测距仪，发光器，激光点投影仪，光学安全系统或其他光学装置中的相关准直光学器件的功率传输或收集效率的装置。圆柱形或棒形透镜（16）位于激光二极管（10）的发射区域（14）附近，棒形透镜（16）的纵向轴线平行于发射区域（14）。优选地，激光二极管（10）的发射区域（14）位于激光二极管（10）的V形表面（20）的底部，以便于棒透镜（16）与发射的对准。地区（14）。杆透镜（16）可以包括玻璃或塑料材料的光纤束，并且足够小以完全封装在激光二极管（10）的窗口盖壳体（26）内.o柱面透镜可以是梯度索引型，全息光学元件，非球面，或上述以及圆形截面棒透镜的组合。在替代实施例中，例如，杆透镜（16）可用于收集和准直从复印机或页面扫描仪中的金属丝灯发出的光。
主权项	An improved optical system in which radiation emitted from a high aspect ratio linear junction laser diode having an elongated emitting junction is projected to a collimating lens to irradiate an object, the improvement comprising: a cylindrical lens having a circular cross-section with a diameter on the order of the high aspect ratio linear laser diode emitting junction length and being spaced a fraction of the diameter of the cross-section from the emitting junction of the high aspect ratio linear laser diode, the longitudinal axis of the cylindrical lens being parallel to the longitudinal axis of the high aspect ratio linear laser diode, whereby widely divergent radiation emitted from the high aspect ratio linear laser diode in a plane perpendicular to the longitudinal axis of the high aspect ratio linear laser diode passes through the cylindrical lens and is converted to a narrowly diverging radiation and projected to the collimating lens.
申请日期	1992-07-15
专利号	US5426533
专利状态	失效
申请号	US07/914447
公开（公告）号	US5426533
IPC 分类号	G02B27/09 \| G02B6/42 \| H01S5/022 \| H01S5/00 \| H01S5/40 \| H01S3/00 \| H01S5/20 \| G02B3/06 \| G02B13/18
专利代理人	-
代理机构	BAKER & BOTTS
文献类型	专利
条目标识符	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[P]. 1995-06-20.

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