Patent US5054902A successfully refreshed from Google Patents.
US5054902A
Expired / Lapsed
US
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Light control with color enhancement
Assignee: Oakley Inc
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Filing: 1989-11-01
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Granted: 1991-10-08
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Expires: 2009-11-01
Abstract
Abstract A semi-reflecting layer is deposited on a transparent material as part of a technique for color enhancement in such a way that the reflectivity of the semi-reflecting layer may still be varied in order to control transmission of light and portions of the electromagnetic spectrum thereto over a broad range of frequencies. For purposes of color enhancement there is used in conjunction with the semi-reflecting layer a thin dielectric layer the thickness whereof is selected to make use of optical interference between light reflected from the outer surface of the dielectric layer and light reflected from the semi-reflecting layer.
Inventors
- 👤 William J. King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:33
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/28; G02B5/285; G02B5/286; B; B44; B44F; B44F1/00; B44F1/02; B44F1/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
161 words
A lens for sunglasses to be worn by a wearer, comprising a light transmissive substrate constituting the lens body, and having a first side for facing the wearer and a second side of facing outwardly from the wearer, a semireflective layer intimately bonded to the second side, and a dielectric layer over said semireflective layer, said dielectric layer being of substantially uniform thickness, the reflectance of said semireflective layer and the thickness of said dielectric layer producing, at one or more wavelengths, a differential effect in intensity, of reflected light incident upon said lens from the direction faced by said second side, by interference between incident light reflected from said dielectric layer and light transmitted through said dielectric layer and reflected from said smireflecting layer, said differential effect altering the spectral distribution of light in an amount for producing a vivid colored appearance formed by said two layers when viewing toward the wearer from the direction faced by said second side.
Claim 2
Dependent Claim
161 words
A lens for sunglasses to be worn by a wearer, comprising a light transmissive substrate constituting the lens body, and having a first side for facing the wearer and a second side of facing outwardly from the wearer, a semireflective layer intimately bonded to the second side, and a dielectric layer over said semireflective layer, said dielectric layer being of substantially uniform thickness, the reflectance of said semireflective layer and the thickness of said dielectric layer producing, at one or more wavelengths, a differential effect in intensity, of reflected light incident upon said lens from the direction faced by said second side, by interference between incident light reflected from said dielectric layer and light transmitted through said dielectric layer and reflected from said smireflecting layer, said differential effect altering the spectral distribution of light in an amount for producing a vivid colored appearance formed by said two layers when viewing toward the wearer from the direction faced by said second side.
Claim 3
Dependent Claim
20 words
A lens according to claim 1, wherein said semireflecting layer is a metal layer having a reflectance under approximately 30%.
Claim 4
Dependent Claim
15 words
A lens according to claim 2, wherein said metal layer has a red-enhanced reflection spectrum.
Claim 5
Dependent Claim
19 words
A lens according to claim 1, wherein said dielectric layer has a thickness under one and a half microns.
Claim 6
Dependent Claim
21 words
A lens according to claim 1, wherein said differential effect at said one or more wavelengths is between 20% and 500%.
Claim 7
Dependent Claim
59 words
A lens according to claim 5, wherein said light transmissive substrate is a shading material which absorbs sufficient light for reducing the intensity of light incident from the viewer side and transmitted through said substrate and semireflective layer to less than the intensity of light incident from the direction of said second side and reflected from said semireflective layer.
Claim 8
Dependent Claim
24 words
A lens according to claim 1, wherein said lens body is constituted by a substrate formed of a single optically homogeneous light transmissive material.
Claim 9
Dependent Claim
192 words
Sunglasses, of the type having a lens for attenuating light traveling through the lens to the eye of a wearer, wherein the lens comprises a light transmissive substrate constituting the lens body, and having a first side for facing the wearer and a second side for facing outwardly from the wearer, a semireflective layer having a first thickness and being intimately bonded to the second side, and a dielectric layer over said semireflective layer, said dielectric layer having a second, substantially, uniform, thickness, the first thickness determining the reflectance of said semireflective layer and the second thickness determining an interference of said dielectric layer, said first and second thicknesses being selected for producing, at one or more wavelengths, a differential effect in intensity, of reflected light incident upon said lens from the direction faced by said second side, by interference between incident light reflected from said dielectric layer and light transmitted through said dielectric layer and reflected from said semireflecting layer, said differential effect altering the spectral distribution of light in an amount for producing a vivid colored appearance when viewing toward the wearer from the direction faced by said second side.
Claim 10
Dependent Claim
192 words
Sunglasses, of the type having a lens for attenuating light traveling through the lens to the eye of a wearer, wherein the lens comprises a light transmissive substrate constituting the lens body, and having a first side for facing the wearer and a second side for facing outwardly from the wearer, a semireflective layer having a first thickness and being intimately bonded to the second side, and a dielectric layer over said semireflective layer, said dielectric layer having a second, substantially, uniform, thickness, the first thickness determining the reflectance of said semireflective layer and the second thickness determining an interference of said dielectric layer, said first and second thicknesses being selected for producing, at one or more wavelengths, a differential effect in intensity, of reflected light incident upon said lens from the direction faced by said second side, by interference between incident light reflected from said dielectric layer and light transmitted through said dielectric layer and reflected from said semireflecting layer, said differential effect altering the spectral distribution of light in an amount for producing a vivid colored appearance when viewing toward the wearer from the direction faced by said second side.
References Cited (Backward Citations)
DE1163C
Cited
DE716153C
Cited
US2379790A
Cited
US2373249A
Cited
US2394533A
Cited
DE947339C
Cited
DE971398C
Cited
DE936076C
Cited
US2854349A
Cited
US3011383A
Cited
US3472751A
Cited
US3679291A
Cited
DE2029181A1
Cited
DE2144242A1
Cited
DE2334152A1
Cited
US3978272A
Cited
US4022947A
Cited
JPH04114277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-10-07 | 1995-04-08 | 1995-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-07 | 1999-04-08 | 1999-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-07 | 2003-04-08 | 2003-10-08 | $7700.00 | Window Closed / Lapsed |