Claims
- 1. A light-transmission screen, comprising:
a lens array comprising a plurality of lenses for projecting light, wherein at least two lenses are assigned to each pixel of an image so as to obtain a desired screen resolution.
- 2. The screen of claim 1, wherein a number of lenses assigned to provide light for each pixel in the screen is sufficient to reduce aliasing below visible thresholds in an image produced by the screen.
- 3. 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.
- 4. The screen of claim 3, wherein the lens array is formed on a first side of a substrate.
- 5. The screen of claim 4, wherein the mask layer is coupled to a second side of the substrate opposite said first side.
- 6. The screen of claim 3, wherein the mask layer and the lens array are formed on a first side of a substrate.
- 7. The screen of claim 3, wherein each aperture in the mask layer is registered with a corresponding lens in the lens array.
- 8. The screen of claim 1, wherein the lenses in said array sample an image at a spatial frequency which reduces abasing below visible thresholds.
- 9. The screen of claim 1, wherein spacing between two adjacent lenses is less than approximately 105% of a diameter of one of the two adjacent lenses.
- 10. The screen of claim 1, wherein spacing between lenses in the lens array is randomized to reduce image artifacts.
- 11. The screen of claim 10, wherein the image artifacts comprise moire or partial coherence effects.
- 12. A light-transmission screen for displaying an image, comprising:
a lens array comprising a plurality of lenses for projecting light; a mask layer, comprising a plurality of apertures, optically coupled to the lens array and positioned on a viewing side of the lens array, wherein each aperture is registered to a corresponding lens in the lens array and is adapted to pass light from its corresponding lens; wherein each pixel of the image is generated by light from at least two lens/aperture combinations.
- 13. The screen of claim 12, wherein a number of lens/aperture combinations assigned to provide light for each pixel in the screen is sufficient to reduce aliasing below visible thresholds in an image produced by the screen.
- 14. The screen of claim 12, wherein a number of lens/aperture combinations assigned to provide light for each pixel in the screen is sufficient to obtain a desired screen resolution.
- 15. The screen of claim 12, wherein the lens array is formed on a first side of a substrate.
- 16. The screen of claim 15, wherein the mask layer is coupled to a second side of the substrate opposite said first side.
- 17. The screen of claim 12, wherein the mask layer and the lens array are formed on a first side of a substrate.
- 18. The screen of claim 12, wherein spacing between two adjacent lenses is less than approximately 105% of a diameter of one of the two adjacent lenses.
- 19. The screen of claim 12, wherein spacing between lenses in the lens array is randomized to reduce image artifacts.
- 20. The screen of claim 19, wherein the image artifacts comprise moire or partial coherence effects.
- 21. A rear projection display comprising the light-transmission screen of claim 12.
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)
|
Number |
Date |
Country |
Parent |
09060906 |
Apr 1998 |
US |
Child |
09521236 |
Apr 2000 |
US |
Continuation in Parts (2)
|
Number |
Date |
Country |
Parent |
10120785 |
Apr 2002 |
US |
Child |
10452254 |
Jun 2003 |
US |
Parent |
09521236 |
Apr 2000 |
US |
Child |
10120785 |
Apr 2002 |
US |