Patent US4929865A successfully refreshed from Google Patents.
US4929865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Eye comfort panel
Assignee: Visual Ease Inc
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Filing: 1989-03-09
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Granted: 1990-05-29
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Expires: 2009-03-09
Abstract
Abstract An eye comfort device for optically adjusting the focal distance for screen viewing of a video display comprising a transparent plate constituting a lens with a diopter vergence value in the range of from 0.4 to 0.8 diopters and preferably from 0.5 to 0.6 diopters. The plate contains a quantity of a UV absorbent rose, magenta or pink tint or colorant sufficient to block at least 80 percent of UV transmissions within the range of from 300 to 360 nm. The preferred plate composition is a substantially transparent organic polymer containing, in addition to the magenta tint, a quantity of a UV absorbent sufficient to block at least 90 percent of UV transmissions below 400 nm.
Inventors
- 👤 Jerome V. Blum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:00
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/72; H01; H01J; H01J29/00; H01J29/86; H01J29/89; H01J29/898
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
38 words
An eye comfort device for optically adjusting the focal distance for screen viewing of a video display comprising a transparent plate constituting a lens with a diopter vergence value in the range of from 0.4 to 0.8 diopters.
Claim 2
Dependent Claim
38 words
An eye comfort device for optically adjusting the focal distance for screen viewing of a video display comprising a transparent plate constituting a lens with a diopter vergence value in the range of from 0.4 to 0.8 diopters.
Claim 3
Dependent Claim
41 words
The eye comfort device of claim 1 wherein the plate has dispersed therein, a quantity of a UV absorbent sufficient to block at least 80 percent of UV transmissions through the plate having a wavelength of from 300 to 400 nm.
Claim 4
Dependent Claim
29 words
The eye comfort device of claim 2 wherein the UV absorbent blocks transmission of at least 90 percent of light having a wavelength of from 300 to 400 nm.
Claim 5
Dependent Claim
24 words
The eye comfort device of claim 1 wherein the plate has dispersed therein, a quantity of pink colorant sufficient to provide increased eye comfort.
Claim 6
Dependent Claim
29 words
The eye comfort device of claim 4 wherein the pink colorant blocks transmission of at least 80 percent of light having a wavelength of from 300 to 360 nm.
Claim 7
Dependent Claim
17 words
The eye comfort device of claim 1 wherein the plate is made of a transparent organic polymer.
Claim 8
Dependent Claim
23 words
The eye comfort device of claim 6 wherein the plate is made of an acrylate or methacrylate homopolymer or copolymer, or a polycarbonate.
Claim 9
Dependent Claim
20 words
The eye comfort device of claim 1 wherein the vergence value of the lens is from 0.5 to 0.6 diopters.
Claim 10
Dependent Claim
82 words
The eye comfort device of claim 1 wherein the plate is made of a transparent organic polymer having a UV absorbent and a pink colorant dispersed therein, the quantity of the UV absorbent being sufficient to block transmission of at least 90 percent of light having a wavelength of from 300 to 400 nm, and the quantity of the pink colorant being sufficient to block transmission of at least 80 percent of light having a wavelength of from 300 to 360 nm.
Claim 11
Dependent Claim
20 words
The eye comfort device of claim 9 wherein the vergence value of the lens is from 0.5 to 0.6 diopters.
References Cited (Backward Citations)
US2690554A
Cited
US2728012A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-28 | 1993-11-27 | 1994-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-28 | 1997-11-27 | 1998-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-28 | 2001-11-27 | 2002-05-29 | $7700.00 | Window Closed / Lapsed |