US4944581A
Expired / Lapsed
US
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Rear face reflection mirror of multilayer film for synthetic resin optical parts
Assignee: Olympus Corp
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Filing: 1989-08-18
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Granted: 1990-07-31
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Expires: 2009-08-18
Abstract
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, (SiO 2 ), CeO 2 , Al(Al) and SiO(Cu) having particular optical or mechanical thickness.
Inventors
- 👤 Hajime Ichikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:14
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/08; G02B5/0816; G02B5/085; G02B5/0858; G02B5/0875; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/261
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
155 words
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 (n 1 d 1 ) of 0 <n 1 d 1 ≦0.1λ 0 , a second layer is CeO 2 layer having an optical thickness (n 2 d 2 ) of 0.19λ 0 ≦n 2 d 2 ≦0.25λ 0 , a third layer is SiO 2 layer having an optical thickness (n 3 d 3 ) of 0.25λ 0 ≦n 3 d 3 ≦0.3λ 0 , a fourth layer is Al layer having a mechanical thickness (d 4 ) of 100˜200 nm, and a fifth layer is SiO layer having an optical thickness (n 5 d 5 ) of 0.18λ 0 ≦n 5 d 5 ≦0.25λ 0 .
Claim 2
Dependent Claim
155 words
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 (n 1 d 1 ) of 0 <n 1 d 1 ≦0.1λ 0 , a second layer is CeO 2 layer having an optical thickness (n 2 d 2 ) of 0.19λ 0 ≦n 2 d 2 ≦0.25λ 0 , a third layer is SiO 2 layer having an optical thickness (n 3 d 3 ) of 0.25λ 0 ≦n 3 d 3 ≦0.3λ 0 , a fourth layer is Al layer having a mechanical thickness (d 4 ) of 100˜200 nm, and a fifth layer is SiO layer having an optical thickness (n 5 d 5 ) of 0.18λ 0 ≦n 5 d 5 ≦0.25λ 0 .
Claim 3
Dependent Claim
142 words
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 (n 1 d 1 ) of 0 <n 1 d 1 ≦0.1λ 0 , a second layer is CeO 2 layer having an optical thickness (n 2 d 2 ) of 0.19λ 0 ≦n 2 d 2 ≦0.25λ 0 , a third layer is SiO 2 layer having an optical thickness (n 3 d 3 ) of 0.25λ 0 ≦0.3λ 0 , a fourth layer is Ag layer having a mechanical thickness (d 4 ) of 100˜200 nm, and a fifth layer is Cu layer having a mechanical thickness (d 5 ) of 100˜200 nm.
Claim 4
Dependent Claim
142 words
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 (n 1 d 1 ) of 0 <n 1 d 1 ≦0.1λ 0 , a second layer is CeO 2 layer having an optical thickness (n 2 d 2 ) of 0.19λ 0 ≦n 2 d 2 ≦0.25λ 0 , a third layer is SiO 2 layer having an optical thickness (n 3 d 3 ) of 0.25λ 0 ≦0.3λ 0 , a fourth layer is Ag layer having a mechanical thickness (d 4 ) of 100˜200 nm, and a fifth layer is Cu layer having a mechanical thickness (d 5 ) of 100˜200 nm.
Claim 5
Dependent Claim
176 words
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 (n 1 d 1 ) of 0 <n 1 d 1 ≦0.1λ 0 , a second layer is SiO 2 layer having an optical thickness (n 2 d 2 ) of 0<n 2 d 2 ≦0.1λ 0 , a third layer is CeO 2 layer having an optical thickness (n 3 d 3 ) of 0.19λ 0 ≦0.25λ 0 , a fourth layer is SiO 2 layer having an optical thickness (n 4 d 4 ) of 0.25λ 0 ≦n 4 d 4 ≦0.3λ 0 , a fifth layer is Al layer having a mechanical thickness (d 5 ) of 100˜200 nm, and a sixth layer is SiO 2 layer having an optical thickness (n 6 d 6 ) of 0.18λ 0 ≦n 6 d 6 ≦0.25λ 0 .
Claim 6
Dependent Claim
176 words
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 (n 1 d 1 ) of 0 <n 1 d 1 ≦0.1λ 0 , a second layer is SiO 2 layer having an optical thickness (n 2 d 2 ) of 0<n 2 d 2 ≦0.1λ 0 , a third layer is CeO 2 layer having an optical thickness (n 3 d 3 ) of 0.19λ 0 ≦0.25λ 0 , a fourth layer is SiO 2 layer having an optical thickness (n 4 d 4 ) of 0.25λ 0 ≦n 4 d 4 ≦0.3λ 0 , a fifth layer is Al layer having a mechanical thickness (d 5 ) of 100˜200 nm, and a sixth layer is SiO 2 layer having an optical thickness (n 6 d 6 ) of 0.18λ 0 ≦n 6 d 6 ≦0.25λ 0 .
Claim 7
Dependent Claim
166 words
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 (n 1 d 1 ) of 0 <n 1 d 1 ≦0.1λ 0 , a second layer is SiO 2 layer having an optical thickness (n 2 d 2 ) of 0<n 2 d 2 ≦0.1λ 0 , a third layer is CeO 2 layer having an optical thickness (n 3 d 3 ) of 0.19λ 0 ≦0.25λ 0 , a fourth layer is SiO 2 layer having an optical thickness (n 4 d 4 ) of 0.25λ 0 ≦n 4 d 4 ≦0.3λ 0 , a fifth layer is Ag layer having a mechanical thickness (d 5 ) of 100˜200 nm, and a sixth layer is Cu layer having a mechanical thickness (d 6 ) of 100˜200 nm.
Claim 8
Dependent Claim
166 words
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 (n 1 d 1 ) of 0 <n 1 d 1 ≦0.1λ 0 , a second layer is SiO 2 layer having an optical thickness (n 2 d 2 ) of 0<n 2 d 2 ≦0.1λ 0 , a third layer is CeO 2 layer having an optical thickness (n 3 d 3 ) of 0.19λ 0 ≦0.25λ 0 , a fourth layer is SiO 2 layer having an optical thickness (n 4 d 4 ) of 0.25λ 0 ≦n 4 d 4 ≦0.3λ 0 , a fifth layer is Ag layer having a mechanical thickness (d 5 ) of 100˜200 nm, and a sixth layer is Cu layer having a mechanical thickness (d 6 ) of 100˜200 nm.
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