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Rear face reflection mirror of multilayer film for synthetic resin optical parts

  • US 4,944,581 A
  • Filed: 08/18/1989
  • Issued: 07/31/1990
  • Est. Priority Date: 09/20/1988
  • Status: Expired due to Fees
First Claim
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1. A rear face mirror of multilayer film for synthetic resin optical part comprising a synthetic resin substrate and a five layer laminate formed on a surface of said substrate, wherein a first layer viewing from a side of said surface is SiO layer having an optical thickness (n1 d1) of 0 <

  • n1 d1

    0.1λ

    0, a second layer is CeO2 layer having an optical thickness (n2 d2) of 0.19λ

    0

    n2 d2

    0.25λ

    0, a third layer is SiO2 layer having an optical thickness (n3 d3) of 0.25λ

    0

    n3 d3

    0.3λ

    0, a fourth layer is Al layer having a mechanical thickness (d4) of 100˜

    200 nm, and a fifth layer is SiO layer having an optical thickness (n5 d5) of 0.18λ

    0

    n5 d5

    0.25λ

    0.

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