Eye comfort panel

• US 4,929,865 A
• Filed: 03/09/1989
• Issued: 05/29/1990
• Est. Priority Date: 01/29/1987
• Status: Expired due to Fees

• Current Assignee: Jerome V. Blum
• Original Assignee: The Visual Edge
• Inventors: Blum, Jerome V.
• Primary Examiner(s): WIEDER, KENNETH A
• Application Number:
  US07/321,632
• Time in Patent Office: 446 Days
• Field of Search: 313/478, 313/474, 350/276 R, 350/284, 358/250, 358/252, 358/253
• US Class Current: 313/478
• CPC Class Codes: H01J 29/898 Spectral filters
• CPC Class Codes: H04N 5/72 Modifying the appearance of television pictures by optical filters or diffusing screens

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.

Claims

1. 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.

2. 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.

3. 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.

4. The eye comfort device of claim 1 wherein the plate has dispersed therein, a quantity of pink colorant sufficient to provide increased eye comfort.

5. 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.

6. The eye comfort device of claim 1 wherein the plate is made of a transparent organic polymer.

7. The eye comfort device of claim 6 wherein the plate is made of an acrylate or methacrylate homopolymer or copolymer, or a polycarbonate.

8. The eye comfort device of claim 1 wherein the vergence value of the lens is from 0.5 to 0.6 diopters.

9. 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.

10. The eye comfort device of claim 9 wherein the vergence value of the lens is from 0.5 to 0.6 diopters.