Rear face reflection mirror of multilayer film for synthetic resin optical parts
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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Abstract
A rear face mirror comprised of multilayer film for use in a synthetic resin optical part has a five or six layer structure formed on a synthetic resin substrate and made from SiO, (SiO2), CeO2, Al(Al) and SiO(Cu) having particular optical or mechanical thickness.
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4 Claims
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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.
- n1 d1 ≦
-
2. 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 ≦
0.3λ
0, a fourth layer is Ag layer having a mechanical thickness (d4) of 100˜
200 nm, and a fifth layer is Cu layer having a mechanical thickness (d5) of 100˜
200 nm.
- n1 d1 ≦
-
3. A rear face mirror of multilayer film for synthetic resin optical part comprising a synthetic resin substrate and a six 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 SiO2 layer having an optical thickness (n2 d2) of 0<
n2 d2 ≦
0.1λ
0, a third layer is CeO2 layer having an optical thickness (n3 d3) of 0.19λ
0 ≦
0.25λ
0, a fourth layer is SiO2 layer having an optical thickness (n4 d4) of 0.25λ
0 ≦
n4 d4 ≦
0.3λ
0, a fifth layer is Al layer having a mechanical thickness (d5) of 100˜
200 nm, and a sixth layer is SiO2 layer having an optical thickness (n6 d6) of 0.18λ
0 ≦
n6 d6 ≦
0.25λ
0.
- n1 d1 ≦
-
4. A rear face mirror of multilayer film for synthetic resin optical part comprising a synthetic resin substrate and a six 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 SiO2 layer having an optical thickness (n2 d2) of 0<
n2 d2 ≦
0.1λ
0, a third layer is CeO2 layer having an optical thickness (n3 d3) of 0.19λ
0 ≦
0.25λ
0, a fourth layer is SiO2 layer having an optical thickness (n4 d4) of 0.25λ
0 ≦
n4 d4 ≦
0.3λ
0, a fifth layer is Ag layer having a mechanical thickness (d5) of 100˜
200 nm, and a sixth layer is Cu layer having a mechanical thickness (d6) of 100˜
200 nm.
- n1 d1 ≦
Specification