Jamin-type interferometers and components therefor

  • US 6,678,056 B2
  • Filed: 07/23/2001
  • Issued: 01/13/2004
  • Est. Priority Date: 07/27/2000
  • Status: Active Grant
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First Claim
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1. A reflector system comprising first and second relatively movable reflectors, wherein:

  • the first reflector is a retroreflector having three mutually-orthogonal reflective surfaces arranged around an optical axis, wherein the reflective surfaces stop short of the optical axis to provide a central region of the retroreflector which transmits incident light and a peripheral region of the retroreflector which retroreflects incident light; and

    the reflectors are arranged so that light which is transmitted through the central region of the first reflector is reflected by the second reflector and transmitted back through the central region of the first reflector.

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