Compensating display surface

• US 20040263963A1
• Filed: 06/26/2003
• Published: 12/30/2004
• Est. Priority Date: 06/26/2003
• Status: Active Grant

• Current Assignee: Dolby International AB (Dolby Laboratories Incorporated)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Pate, Michael A.
• Granted Patent: US 7,133,201 B2
• Time in Patent Office: Days
• US Class Current: 359/443
• CPC Class Codes: G03B 21/56 Projection screens
• CPC Class Codes: H04N 21/4122 additional display device, e.g. video projector digital output for controlling a plurality of local displays G06F3/1423
• CPC Class Codes: H04N 5/58 in dependence upon ambient light
• CPC Class Codes: H04N 5/74 Projection arrangements for image reproduction, e.g. using eidophor

Abstract

A display system is provided that includes a light source configured to project an image, and a display surface configured to receive the projected image and at least partially compensate for a non-ideal spectral power distribution exhibited by the light source.

Claims

1. A display system, comprising:

a light source configured to project an image; and

a display surface configured to receive the projected image and at least partially compensate for a non-ideal spectral power distribution of the light source.

2. The display system of claim 1, where the display surface at least partially compensates for the non-ideal spectral power distribution of the light source by differential color absorption.

3. The display system of claim 1, where the light source is configured to project the image on the front of the display surface.

4. The display system of claim 1, where the light source is configured to project the image on the rear of the display surface.

5. The display system of claim 1, where the display surface is configured to at least substantially compensate for the non-ideal spectral power distribution of the light source.

6. The display system of claim 1, where the non-ideal spectral power distribution includes one or more wavelengths of enhanced output, and the display surface includes colorant selected to absorb visible light within at least one wavelength of enhanced output.

7. The display system of claim 6, where the non-ideal spectral power distribution includes multiple wavelengths of enhanced output that are not adjacent.

8. The display system of claim 1, where the light source is associated with a light engine of a projector.

9. A projection screen, comprising a display surface configured to receive an image projected by a light source having a non-ideal spectral power distribution that includes one or more wavelengths of enhanced output, where the display surface at least partially compensates for the non-ideal spectral power distribution by differentially absorbing light within at least one wavelength of enhanced output.

10. The projection screen of claim 9, where the display surface is configured to reflect the projected image.

11. The projection screen of claim 9, where the display surface is configured to transmit the projected image.

12. The projection screen of claim 9, where the one or more wavelengths of enhanced output ranges within a visible wavelength range of between approximately 380 nm and approximately 780 nm.

13. The projection screen of claim 9, where the display surface differentially absorbs light of at least one wavelength of enhanced output.

14. The projection screen of claim 9, where the display surface includes a rigid substrate.

15. The projection screen of claim 9, where the display surface includes a flexible substrate.

16. The projection screen of claim 9, where the projection screen is a portable projection screen.

17. A method of making a color-compensating projection screen, comprising:

determining a spectral power distribution of a light source;

determining an absorption spectrum complementary to the spectral power distribution; and

providing a display surface that exhibits an absorption spectrum at least substantially corresponding to the calculated absorption spectrum.

18. The method of claim 17, wherein providing the display surface includes determining a colorant formulation that exhibits an absorption spectrum that at least substantially matches the calculated absorption spectrum and incorporating the colorant formulation in the display surface.

19. The method of claim 18, where incorporating the colorant combination includes incorporating at least two colorants in the display surface.

20. A method of compensating for a light source having a non-ideal spectral power distribution, comprising:

providing a display surface configured to exhibit an absorption spectrum that is at least partially complementary to the non-ideal spectral power distribution; and

projecting an image onto the display surface using the light source.

21. A display system, comprising:

means for projecting an image;

means for receiving the projected image;

means for at least partially compensating by the means for receiving for a non-ideal spectral power distribution of the means for projecting.

22. The display system of claim 21, where the means for at least partially compensating for a non-ideal spectral power distribution includes applying colorant to the means for receiving the projected image to effect differential color absorption of the projected image.