Claims
- 1. A light-transmission screen, comprising:
an lens array for projecting light, wherein lenses in the lens array are packed so as to define a predetermined viewing area.
- 2. The screen of claim 1, wherein lenses in one region of the lens array are packed differently then lenses in another region of the lens array.
- 3. The screen of claim 1, wherein the spacing between lenses among said portion of the lenses is varied to define a predetermined viewing angle in a horizontal direction.
- 4. The screen of claim 1, wherein the spacing between lenses among said portion of the lenses is varied to define a predetermined viewing angle in a vertical direction.
- 5. The screen of claim 1, wherein the lenses in said array are arranged in a substantially hexagonal, square or pentagonal pattern.
- 6. The screen of claim 1, further comprising a mask layer optically coupled to the lens array and positioned on a viewing side of the lens array, wherein the mask layer comprises a plurality of apertures.
- 7. The screen of claim 6, wherein the lens array is formed on a first side of a substrate.
- 8. The screen of claim 7, wherein the mask layer is coupled to a second side of the substrate opposite said first side.
- 9. The screen of claim 6, wherein each aperture in the mask layer is registered with a corresponding lens in the lens array.
- 10. The screen of claim 6, wherein a half-power half-angle of the screen is at least 12 degrees.
- 11. The screen of claim 6, wherein a half-power half-angle of the screen is no greater than approximately 40 degrees.
- 13. The screen of claim 7, further comprising an anti-reflective feature formed on a second side of the substrate opposite said first side.
- 14. A light-transmission screen, comprising:
a lens array for projecting light, wherein at least one parameter of each lens in the lens array is independently configured such that a predetermined gain is exhibited by the screen over a predetermined viewing area.
- 15. The screen of claim 14, wherein the parameter comprises a lens shape.
- 16. The screen of claim 15, wherein at least one lens in the lens array comprises an aspherical lens.
- 17. The screen of claim 15, wherein at least one lens in the lens array comprises an asymmetrical lens.
- 18. The screen of claim 14, wherein the parameter comprises lens placement.
- 19. The screen of claim 18, wherein the lenses in said array are arranged in a substantially hexagonal pattern.
- 20. The screen of claim 14, wherein the parameter comprise lens spacing.
- 21. The screen of claim 20, wherein at least two lenses in the lens array are spaced so that they overlap.
- 22. The screen of claim 20, wherein the spacing between lenses is varied to define a predetermined viewing angle in at least one direction.
- 23. The screen of claim 22, wherein the spacing between lenses is varied to define a predetermined viewing angle in a horizontal direction.
- 24. The screen of claim 22, wherein the spacing between lenses is varied to define a predetermined viewing angle in a vertical direction.
- 25. The screen of claim 14, wherein the at least one parameter is configured differently in at least two lenses in the lens array.
- 26. The screen of claim 14, further comprising a mask layer optically coupled to the lens array and positioned on a viewing side of the lens array, wherein the mask layer comprises a plurality of apertures.
- 27. The screen of claim 26, wherein the lens array is formed on a first side of a substrate.
- 28. The screen of claim 27, wherein the mask layer is coupled to a second side of the substrate opposite said first side.
- 29. The screen of claim 26, wherein each aperture in the mask layer is registered with a corresponding lens in the lens array.
- 30. The screen of claim 21, further comprising an anti-reflective feature formed on a second side of the substrate opposite said first side.
- 31. A light-transmission screen, comprising:
a first region which includes a first group of lenses; and a second region which includes a second group of lenses, wherein the lenses in said first group are structurally different from the lenses in said second group such that the lenses in the first group project light in a different direction than the lenses in the second group.
- 32. The screen of claim 31, wherein the lenses in said first group have aspherical shapes which result in a viewing angle in a first direction of the screen that is greater than a viewing angle in a second direction of the screen.
- 33. The screen of claim 32, wherein the first direction is a horizontal direction and the second direction is a vertical direction.
- 34. The screen of claim 32, wherein the lenses in said first group also have an asymmetrical shape.
- 35. The screen of claim 32, wherein the lenses in said second group are spherically or hemispherically shaped.
- 36. The screen of claim 31, wherein the lenses in said first group and the lenses in said second group project light differently such that a predetermined gain is exhibited by the screen over a predetermined viewing area.
- 37. The screen of claim 31, further comprising a mask layer optically coupled to the first and second groups of lenses and positioned on a viewing side of the first and second groups of lenses, wherein the mask layer comprises a plurality of apertures.
- 38. The screen of claim 37, wherein the first and second groups of lenses are formed on a first side of a substrate.
- 39. The screen of claim 38, wherein the mask layer is coupled to a second side of the substrate opposite said first side.
- 40. The screen of claim 37, wherein each aperture in the mask layer is registered with a corresponding lens in the lens array.
- 41. The screen of claim 38, further comprising an anti-reflective feature formed on at least one side of the substrate.
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation-in-part of U.S. patent application Ser. No. 10/120,785 filed on Apr. 12, 2002, which is a continuation-in-part of U.S. patent application Ser. No. 09/521,236, filed Apr. 5, 2000, now U.S. Pat. No. 6,483,612, which is a continuation of U.S. patent application Ser. No. 08/060,906, filed Apr. 15, 1998, now abandoned. The contents of the above prior applications are hereby incorporated by reference.
Continuations (1)
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Number |
Date |
Country |
Parent |
08060906 |
May 1993 |
US |
Child |
09521236 |
Apr 2000 |
US |
Continuation in Parts (2)
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Number |
Date |
Country |
Parent |
10120785 |
Apr 2002 |
US |
Child |
10455769 |
Jun 2003 |
US |
Parent |
09521236 |
Apr 2000 |
US |
Child |
10120785 |
Apr 2002 |
US |