Display system with a transparent projection surface with reduced blow-by

Patent metadata

Field	Value
Publication number	US-9158189-B2
Application number	US-201414177475-A
Country	US
Kind code	B2
Filing date	Feb 11, 2014
Priority date	Feb 11, 2014
Publication date	Oct 13, 2015
Grant date	Oct 13, 2015

Abstract

A display system that is adapted to provide control blow-by. The display system includes a projector that is operable to project light through a lens. The system also includes a first polarizer positioned proximate to the lens receiving and first polarizing the projected light. The display system further includes a projection screen assembly that includes a transparent projection screen and a second polarizer. The projected light first strikes the transparent projection screen causing a projected image to be displayed. The second polarizer is adapted to second polarize the projected light to provide cross-polarization and reduce blow-by in the display system. The first and second polarizers are configured with first and second axes of polarization, and the first and second polarizers are arranged in the display system with the first axis of polarization substantially orthogonal to the second axis of polarization to provide full cross-polarization of the projected light.

First claim

I claim:

1. A display system with reduced blow-by, comprising:
a projector operable, based upon input content defining one or more images, to project light through a lens;
a first polarizer positioned proximate to the lens receiving and first polarizing the projected light; and
a projection screen assembly comprising a transparent projection screen and a second polarizer,
wherein the projected light first strikes the transparent projection screen causing a projected image to be displayed and wherein the second polarizer is adapted to second polarize the projected light to provide cross-polarization and reduce blow-by in the display system,
wherein the first and second polarizers are configured with first and second axes of polarization, and
wherein the first and second polarizers are arranged in the display system with the first axis of polarization substantially orthogonal to the second axis of polarization.

2. The display system of claim 1 , wherein the second polarizer is substantially transparent to non-polarized light, whereby the projection screen assembly is substantially transparent when illuminated with ambient light.

3. The display system of claim 1 , wherein the transparent projection screen comprises a scrim.

4. The display system of claim 1 , wherein the transparent projection screen comprises a printed projection surface printed upon the second polarizer or upon a sheet of transparent material positioned adjacent to the second polarizer.

5. The display system of claim 4 , wherein the printed projection surface comprises a plurality of dots formed of transparent ink.

6. The display system of claim 5 , wherein the transparent ink comprises UV-curable transparent inkjet ink and the dots are printed using an inkjet printer.

7. The display system of claim 5 , wherein the dots are in provided at a density in a range of 500 to 700 DPI.

8. The display system of claim 1 , further including a camera with a flash element, wherein the flash element includes a polarizing element adapted, when combined with the second polarizer, to provide cross-polarization of light emitted from the flash element.

9. An apparatus for simulating a transparent communication monitor, comprising:
a projector operating to project light to display an image;
a transparent substrate supported a distance away from the projector; and
a printed projection surface on the transparent substrate adapted for displaying the image in response to being illuminated by the projected light,
wherein the printed projection surface comprises a plurality of dots comprising transparent ink that are provided at a density in the range of 10 to 30 percent.

10. The apparatus of claim 9 , wherein the transparent ink comprises UV-curable inkjet ink and the dots are printed on a side of the transparent substrate with the use of an inkjet printer operating in the range of 500 to 700 DPI.

11. The apparatus of claim 9 , further comprising a first polarizer polarizing the projected light prior to the projected light illuminating the printed projection surface and a second polarize polarizing the projected light after the projected light passes through the printed projection surface.

12. The apparatus of claim 11 , wherein the first and second polarizers provide cross-polarization of the projected light to reduce blow-by to the range of 10 to 50 percent of the projected light.

13. The apparatus of claim 11 , wherein the first polarizer has a first axis of polarization and the second polarizer has a second axis of polarization that is orthogonal to the first axis of polarization.

14. A display method, comprising:
projecting light to display an image;
first polarizing the projected light;
illuminating a transparent projection screen with the projected light after the first polarizing to display the image; and
second polarizing the projected light after the illuminating of the transparent projection screen so as to provide cross-polarization of the project light, whereby blow-by is reduced during the display method,
wherein the first polarizing comprises passing the projected light through a polarized material with a first axis of polarization and the second polarizing comprises passing the projected light through a polarized material with a second axis of polarization orthogonal to the first axis of polarization.

15. The method of claim 14 , wherein the transparent projection screen comprises a scrim or a printed projection surface.

16. The method of claim 15 , wherein the printed projection surface comprises a pattern of dots formed of transparent ink provided at a density of at least 10 percent.

17. The method of claim 16 , wherein the transparent ink comprises UV-curable transparent inkjet ink printed with a printer onto a sheet of transparent material at a dots per inch (DPI) in the range of 400 to 800 DPI.

18. A display system with reduced blow-by, comprising:
a projector operable, based upon input content defining one or more images, to project light through a lens;
a first polarizer positioned proximate to the lens receiving and first polarizing the projected light; and
a projection screen assembly comprising a transparent projection screen and a second polarizer,
wherein the projected light first strikes the transparent projection screen causing a projected image to be displayed,
wherein the second polarizer is adapted to second polarize the projected light to provide cross-polarization and reduce blow-by in the display system, and
wherein the second polarizer is substantially transparent to non-polarized light, whereby the projection screen assembly is substantially transparent when illuminated with ambient light.

19. The display system of claim 18 , wherein the transparent projection screen comprises a scrim.

20. The display system of claim 18 , wherein the transparent projection screen comprises a printed projection surface printed upon the second polarizer or upon a sheet of transparent material positioned adjacent to the second polarizer.

21. The display system of claim 20 , wherein the printed projection surface comprises a plurality of dots formed of transparent ink.

22. The display system of claim 21 , wherein the transparent ink comprises UV-curable transparent inkjet ink and the dots are printed using an inkjet printer.

23. The display system of claim 21 , wherein the dots are in provided at a density in a range of 500 to 700 DPI.

24. The display system of claim 18 , further including a camera with a flash element, wherein the flash element includes a polarizing element adapted, when combined with the second polarizer, to provide cross-polarization of light emitted from the flash element.

25. A display system with reduced blow-by, comprising:
a projector operable, based upon input content defining one or more images, to project light through a lens;
a first polarizer positioned proximate to the lens receiving and first polarizing the projected light; and
a projection screen assembly comprising a transparent projection screen and a second polarizer,
wherein the projected light first strikes the transparent projection screen causing a projected image to be displayed,
wherein the second polarizer is adapted to second polarize the projected light to provide cross-polarization and reduce blow-by in the display system, and
wherein the transparent projection screen comprises a printed projection surface printed upon the second polari

Assignees

• Disney Entpr Inc

Inventors

• Joseph Daniel M

Classifications

• G03B21/14

  Details · CPC title

• G03B15/03

  Combinations of cameras with lighting apparatus; Flash units · CPC title

• G03B21/62

  Translucent screens · CPC title

• G02B27/28

  for polarising (used in stereoscopes G02B30/25) · CPC title

• G03B35/24

  using apertured or refractive resolving means on screens or between screen and eye · CPC title