Patent US4300819A successfully refreshed from Google Patents.
US4300819A
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US
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Eyeglasses for aiding color blind viewers
Assignee: Individual
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Filing: 1979-11-07
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Granted: 1981-11-17
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Expires: 1999-11-07
Abstract
Abstract Improved eyeglasses for use by color blind individuals or viewers. The eyeglasses are constructed to have two lenses, one of which is clear and the other of which is colored. Each lens is formed to have a reflective or mirror surface as viewed from the front of the eyeglasses. When worn by a color blind viewer, the combination of lenses improves the color blind viewer's ability to discriminate between different colored objects while the reflective or mirror surfaces cause the lenses to appear to be identical to other persons or viewers.
Inventors
- 👤 Donald E. Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:14
CPC Classifications
G; G02; G02C; G02C7/00; G02C7/10; G02C7/104; G02C5/00; G02C5/001; G02C2202/00; G02C2202/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
106 words
In a pair of eyeglasses having two lenses retained in spaced apart relationship so that when worn by a viewer, one lens is located in front of each eye of the viewer for viewing therethrough, the improvement comprising: one of said lens consisting essentially of a clear lens element of a clear homogeneous material for passing light therethrough and a means for forming a mirror surface over the clear lens element; and the other of said lenses consisting essentially of a colored lens element of a homogeneous colored material for passing light therethrough and a means for forming a mirror surface over the colored lens element.
Claim 2
Dependent Claim
106 words
In a pair of eyeglasses having two lenses retained in spaced apart relationship so that when worn by a viewer, one lens is located in front of each eye of the viewer for viewing therethrough, the improvement comprising: one of said lens consisting essentially of a clear lens element of a clear homogeneous material for passing light therethrough and a means for forming a mirror surface over the clear lens element; and the other of said lenses consisting essentially of a colored lens element of a homogeneous colored material for passing light therethrough and a means for forming a mirror surface over the colored lens element.
Claim 3
Dependent Claim
12 words
The eyeglasses of claim 1 wherein said colored lens element is red.
Claim 4
Dependent Claim
27 words
The eyeglasses of claim 1 wherein said means for forming a mirror surface comprises a coating over the surface of each lens element forming a mirror surface.
Claim 5
Dependent Claim
102 words
In the combination of a pair of eyeglasses worn by a color blind viewer so that one lens is located in front of each eye for viewing therethrough, the improvement in said eyeglasses comprising: one of said lenses consisting essentially of a clear lens element of a clear homogeneous material for passing light therethrough and a means for forming a mirror surface over the clear lens element; and the other of said lenses consisting essentially of a colored lens element of a homogeneous colored material for passing light therethrough and a means for forming a mirror surface over the colored lens element.
Claim 6
Dependent Claim
102 words
In the combination of a pair of eyeglasses worn by a color blind viewer so that one lens is located in front of each eye for viewing therethrough, the improvement in said eyeglasses comprising: one of said lenses consisting essentially of a clear lens element of a clear homogeneous material for passing light therethrough and a means for forming a mirror surface over the clear lens element; and the other of said lenses consisting essentially of a colored lens element of a homogeneous colored material for passing light therethrough and a means for forming a mirror surface over the colored lens element.
Claim 7
Dependent Claim
38 words
The combination of claim 4 wherein the color blind viewer has a dominant eye and a non-dominant eye and the colored lens element is located so that it is in front of the non-dominant eye for viewing therethrough.
Claim 8
Dependent Claim
12 words
The combination of claim 4 wherein the colored lens element is red.
Claim 9
Dependent Claim
26 words
The combination of claim 4 wherein said means for forming a mirror surface comprises a coating over the surface of each lens forming the mirror surface.
References Cited (Backward Citations)
US2675740A
Cited
US2409356A
Cited
FR1055677A
Cited
US3586423A
Cited
US3701590A
Cited
US3877797A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-11-16 | 1985-05-18 | 1985-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-16 | 1989-05-18 | 1989-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-16 | 1993-05-18 | 1993-11-17 | $7700.00 | Window Closed / Lapsed |