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1. 发明授权

US06897962B2 Interferometer using beam re-tracing to eliminate beam walk-off 有权
标题翻译：干涉仪使用光束重新追踪消除光束偏移
公开(公告)号：US06897962B2
公开(公告)日：2005-05-24
申请号：US10126002
申请日：2002-04-18
申请人： Eric S. Johnstone , John J. Bockman , Alan B. Ray , Kerry Bagw ell
发明人： Eric S. Johnstone , John J. Bockman , Alan B. Ray , Kerry Bagw ell
IPC分类号： G01B9/02 , G02B5/04
CPC分类号： G01B9/02007 , G01B9/02003 , G01B9/02018 , G01B9/02061 , G01B2290/15 , G01B2290/70
摘要： An interferometer returns parallel beams that are subject to walk-off caused by reflector misalignment for an additional pass through the interferometer optics and thereby eliminates beam walk-off. A return reflector can be a plane mirror that directs returning beams to retrace paths through the interferometer optics to combine and exit along the axis of the input beam. Separation optics can separate the combined beam from the input beam. Alternatively, a return reflector such as an isosceles prism or a trapezoidal prism reflects and offsets returning beams so that the combined beam is offset from the input beam. The return reflector more generally responds to a shift in incident beam position with a matching shift of the reflected beam in contrast to a retroreflector, which shifts a reflected beam in a direction opposite to the shift in the incident beam.
摘要翻译：干涉仪返回平行光束，该平行光束由反射器未对准引起的偏离，以便额外通过干涉仪光学元件，从而消除光束的离散。返回反射器可以是平面镜，其引导返回的光束以通过干涉仪光学器件回扫路径，以沿输入光束的轴线组合和退出。分离光学器件可以将组合光束与输入光束分离。或者，诸如等腰棱镜或梯形棱镜的返回反射器反射和偏移返回光束，使得组合的光束从输入光束偏移。返回反射器更一般地响应入射光束位置的移动，与反射器相反，反射光束的反转光束在与入射光束中的偏移相反的方向上偏移反射光束。

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