Display systems and methods employing wavelength multiplexing of colors

• US 9,766,535 B2
• Filed: 07/21/2015
• Issued: 09/19/2017
• Est. Priority Date: 07/22/2014
• Status: Active Grant

• Current Assignee: Barco Incorporated (Barco NV)
• Original Assignee: Barco Incorporated (Barco NV)
• Inventors: Candry, Patrick, Maximus, Bart, Stremple, Scott
• Primary Examiner(s): Chowdhury, Sultan
• Assistant Examiner(s): Cruz, Magda
• Application Number:
  US14/804,695
• Publication Number:
  US 20160088271A1
• Time in Patent Office: 791 Days
• CPC Class Codes: G02B 1/11 Anti-reflection coatings
• CPC Class Codes: G02B 5/003 Light absorbing elements
• CPC Class Codes: G02B 5/0284 used in reflection
• CPC Class Codes: G02B 5/0294 adapted to provide an additional optical effect, e.g. anti-reflection or filter
• CPC Class Codes: G02B 5/09 Multifaceted or polygonal mirrors , e.g. polygonal scanning mirrors; Fresnel mirrors
• CPC Class Codes: G02B 5/285 comprising deposited thin solid films G02B5/281 - G02B5/289 take precedence; multilayered film filters for fibre optic multiplexing G02B6/29361
• CPC Class Codes: G03B 21/567 for colour projection G03B21/58, G03B21/60 take precedence
• CPC Class Codes: G03B 21/60 characterised by the nature of the surface
• CPC Class Codes: G03B 21/602 Lenticular screens G03B21/625 takes precedence
• CPC Class Codes: G06F 3/1446 display composed of modules, e.g. video walls
• CPC Class Codes: G09G 2300/026 Video wall, i.e. juxtaposition of a plurality of screens to create a display screen of bigger dimensions
• CPC Class Codes: G09G 2320/0209 Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display
• CPC Class Codes: G09G 2320/0238 Improving the black level
• CPC Class Codes: G09G 3/003 to produce spatial visual effects
• CPC Class Codes: G09G 3/02 by tracing or scanning a light beam on a screen
• CPC Class Codes: G09G 3/16 by control of light from an independent source
• CPC Class Codes: H04N 9/3147 Multi-projection systems displays in general H04N9/12; video walls G06F3/1446, G09G2300/026

Abstract

An immersive display system is disclosed that includes screens configured to mitigate reduction in contrast ratio due at least in part to peripheral light incident on the screens. The immersive display system includes at least two screens and at least two projector systems. The screens have a multi-layered structure configured to selectively reflect light in narrow wavelength bands. Each screen is configured to strongly diffusely reflect light in narrow wavelength bands that are different from the wavelength bands reflected by other screens in the immersive display system. Projector systems can be configured to provide light to associated screens in the narrow wavelength bands reflected by those screens.

Claims

1. An immersive display system comprising:

a first screen comprising a multilayer structure configured to diffusely reflect light in a first red wavelength band, a first green wavelength band, and a first blue wavelength band;

a second screen comprising a multilayer structure configured to diffusely reflect light in a second red wavelength band that does not overlap with the first red wavelength band, a second green wavelength band that does not overlap with the first green wavelength band, and a second blue wavelength band that does not overlap with the first blue wavelength band;

a third screen comprising a multilayer structure configured to diffusely reflect light in a third red wavelength band that does not overlap with the first or second red wavelength bands, a third green wavelength band that does not overlap with the first or second green wavelength bands, and a third blue wavelength band that does not overlap with the first or second blue wavelength bands;

a first projector system configured to project a first video onto the first screen, the first projector system configured to provide light within the first red wavelength band, the first green wavelength band, and the first blue wavelength band;

a second projector system configured to project a second video onto the second screen, the second projector system configured to provide light within the second red wavelength band, the second green wavelength band, and the second blue wavelength band; and

a third projector system configured to project a third video onto the third screen, the third projector system configured to provide light within the third red wavelength band, the third green wavelength band, and the third blue wavelength band,

wherein the first screen and the third screen are positioned adjacent to the second screen so that the first video, the second video, and the third video are configured to be simultaneously viewed by a plurality of viewers in an immersive viewing environment.

2. The immersive display system of claim 1, wherein:

the first projector system is further configured to not provide light in the second or third red wavelength bands, the second or third green wavelength bands, or the second or third blue wavelength bands,

the second projector system is further configured to not provide light in the first or third red wavelength bands, the first or third green wavelength bands, or the first or third blue wavelength bands, and

the third projector system is further configured to not provide light in the first or second red wavelength bands, the first or second green wavelength bands, or the first or second blue wavelength bands.

3. The immersive display system of claim 1, wherein:

the first screen is further configured to absorb light in the second and third red wavelength bands, the second and third green wavelength bands, and the second and third blue wavelength bands,

the second screen is further configured to absorb light in the first and third red wavelength bands, the first and third green wavelength bands, and the first and third blue wavelength bands, and

the third screen is further configured to absorb light in the first and second red wavelength bands, the first and second green wavelength bands, and the first and second blue wavelength bands.

4. The immersive display system of claim 3, wherein the absorption of the first screen is at least 90% in each of the second and third red wavelength bands, the second and third green wavelength bands, and the second and third blue wavelength bands.

5. The immersive display system of claim 4, wherein the absorption of the second screen is at least 90% in each of the first and third red wavelength bands, the first and third green wavelength bands, and the first and third blue wavelength bands.

6. The immersive display system of claim 5, wherein the absorption of the third screen is at least 90% in each of the first and second red wavelength bands, the first and second green wavelength bands, and the first and second blue wavelength bands.

7. The immersive display system of claim 1, wherein the absorption of the first screen is less than or equal to 5% in each of the first red wavelength band, the first green wavelength band, and the first blue wavelength band.

8. The immersive display system of claim 7, wherein the absorption of the second screen is less than or equal to 5% in each of the second red wavelength band, the second green wavelength band, and the second blue wavelength band.

9. The immersive display system of claim 8, wherein the absorption of the third screen is less than or equal to 5% in each of the third red wavelength band, the third green wavelength band, and the third blue wavelength band.

10. The immersive display system of claim 1, wherein the width of each of the first, second, and third red wavelength bands is less than or equal to about 10 nm.

11. The immersive display system of claim 1, wherein the width of each of the first, second, and third red wavelength bands is less than or equal to about 2% of the center wavelength of the respective wavelength band.

12. The immersive display system of claim 1, wherein a center wavelength of the first red wavelength band is about 630 nm, a center wavelength of the first green wavelength band is about 540 nm, and a center wavelength of the first blue wavelength band is about 465 nm.

13. The immersive display system of claim 12, wherein a center wavelength of the second red wavelength band is about 620 nm, a center wavelength of the second green wavelength band is about 530 nm, and a center wavelength of the second blue wavelength band is about 455 nm.

14. The immersive display system of claim 13, wherein a center wavelength of the third red wavelength band is about 610 nm, a center wavelength of the third green wavelength band is about 520 nm, and a center wavelength of the third blue wavelength band is about 445 nm.

15. The immersive display system of claim 1, wherein the first, second, and third screens are curved.

16. An immersive display system comprising:

a first screen comprising;

a first layer comprising an anti-reflection element or a glare suppression element configured to suppress specular reflections of light incident on the screen;

a second layer comprising a first interference coating configured to reflect light in a red wavelength band;

a third layer comprising a second interference coating configured to reflect light in a green wavelength band;

a fourth layer comprising a third interference coating configured to reflect light in a blue wavelength band;

a fifth layer comprising a light-absorbing element configured to absorb visible light; and

a second screen positioned adjacent to the first screen, the second screen comprising;

a first layer comprising an anti-reflection element or a glare suppression element configured to suppress specular reflections of light incident on the screen;

a second layer comprising a first interference coating configured to reflect light in a second red wavelength band that does not overlap with the red wavelength band;

a third layer comprising a second interference coating configured to reflect light in a second green wavelength band that does not overlap with the green wavelength band;

a fourth layer comprising a third interference coating configured to reflect light in a second blue wavelength band that does not overlap with the blue wavelength band; and

a fifth layer comprising a light-absorbing element configured to absorb visible light.

17. The immersive display system of claim 16, wherein at least one of the first and second screens further comprises a reflector positioned prior to the first layer on an optical path from a projector to the first screen.

18. The immersive display system of claim 17, wherein the reflector comprises a Fresnel reflecting surface comprising a set of flat annular sections wherein each flat surface is at a different angle.

19. The immersive display system of claim 16, wherein at least one of the first and second screen further comprises a structure of micro-lenses, wherein individual micro-lenses include a light diffusing element.