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Phase shifting mirror

  • US 4,322,130 A
  • Filed: 09/26/1979
  • Issued: 03/30/1982
  • Est. Priority Date: 09/29/1978
  • Status: Expired due to Term
First Claim
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1. A phase shifting mirror comprising:

  • a substrate;

    a layer of aluminum provided on said substrate, said layer having a thickness sufficient to prevent passage of light; and

    a single layer of dielectric material provided on said layer of aluminum, the effective film thickness of said dielectric layer being between 1/9.9 and 1/6.42 of a design wavelength of light.

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