US4160584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transparent metallic coating and a glass overcoating on a plastic substrate produce a chromatic effect
Assignee: Polaroid Corp
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Filing: 1977-01-03
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Granted: 1979-07-10
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Expires: 1997-01-03
Abstract
Abstract Spectacles are provided which comprise lenses having a transparent substrate upon which a continuous transparent metallic layer is vapor deposited. Coated thereover is a continuous layer of a dielectric material which is an odd multiple of one-quarter wavelength of a reference color in thickness.
Inventors
- 👤 Charles L. Giles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:27
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/28; G02B27/281; G02B1/00; G02B1/08; G02B1/10; G02C; G02C7/00; G02C7/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
114 words
A spectacle lens for spectacles comprising a pair of lens rims connected by a bridge portion for supporting right and left spectacle lenses, each of said rims retaining a spectacle lens, said spectacle lens comprising in order: (a) a transparent light polarizer substrate; (b) a transparent continuous layer of a metal coated on one surface of said substrate; and (c) a transparent continuous layer of a dielectric material coated over said metallic layer, the dielectric material being an odd multiple of one-quarter wavelength in thickness with respect to a reference color of the spectrum, said layer of dielectric material being positioned on the side of said lens opposed to the eye of the wearer.
Claim 2
Dependent Claim
114 words
A spectacle lens for spectacles comprising a pair of lens rims connected by a bridge portion for supporting right and left spectacle lenses, each of said rims retaining a spectacle lens, said spectacle lens comprising in order: (a) a transparent light polarizer substrate; (b) a transparent continuous layer of a metal coated on one surface of said substrate; and (c) a transparent continuous layer of a dielectric material coated over said metallic layer, the dielectric material being an odd multiple of one-quarter wavelength in thickness with respect to a reference color of the spectrum, said layer of dielectric material being positioned on the side of said lens opposed to the eye of the wearer.
Claim 3
Dependent Claim
23 words
The spectacle lens of claim 1 wherein said metal comprises an element selected from the group consisting of chromium, nickel, aluminum and silver.
Claim 4
Dependent Claim
12 words
The spectacle lens of claim 1 wherein said dielectric material comprises silicon.
Claim 5
Dependent Claim
13 words
The spectacle lens of claim 3 wherein said dielectric material comprises silicon dioxide.
Claim 6
Dependent Claim
14 words
The spectacle lens of claim 3 wherein said dielectric material comprises a borosilicate glass.
Claim 7
Dependent Claim
13 words
The spectacle lens of claim 1 wherein said dielectric material comprises yttrium oxide.
Claim 8
Dependent Claim
28 words
The spectacle lens of claim 1 wherein the thickness of said dielectric material is between one and five one-quarter wavelengths, inclusive, of a reference color of the spectrum.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-07-09 | 1983-01-08 | 1983-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-09 | 1987-01-08 | 1987-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-09 | 1991-01-08 | 1991-07-10 | $7700.00 | Window Closed / Lapsed |