Display systems and methods employing screens with an array of micro-lenses or micro-mirrors

• US 9,726,968 B2
• Filed: 10/27/2015
• Issued: 08/08/2017
• Est. Priority Date: 10/27/2014
• Status: Active Grant

• Current Assignee: Barco Incorporated (Barco NV)
• Original Assignee: Barco Incorporated (Barco NV)
• Inventors: Candry, Patrick, Maximus, Bart, Maes, Dirk
• Primary Examiner(s): Mahoney, Christopher
• Application Number:
  US14/924,023
• Publication Number:
  US 20160116834A1
• Time in Patent Office: 651 Days
• CPC Class Codes: G02B 27/285 comprising arrays of elements, e.g. microprisms
• CPC Class Codes: G02B 3/0056 arranged along two different directions in a plane, e.g. honeycomb arrangement of lenses G02B3/0043 takes precedence; miniaturised objectives for electronic devices employing wafer level optics G02B13/0085
• CPC Class Codes: G02B 3/04 with continuous faces that are rotationally symmetrical but deviate from a true sphere , e.g. so called "aspheric" lenses
• CPC Class Codes: G02B 30/27 involving lenticular arrays
• CPC Class Codes: G02B 30/35 using reflective optical elements in the optical path between the images and the observer
• CPC Class Codes: G03B 21/602 Lenticular screens G03B21/625 takes precedence
• CPC Class Codes: G03B 21/604 Polarised screens
• CPC Class Codes: G03B 35/20 using two or more projectors
• CPC Class Codes: G03B 35/26 using polarised or coloured light separating different viewpoint images
• CPC Class Codes: G03B 37/04 with cameras or projectors providing touching or overlapping fields of view

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 one screen having an array of micro-lenses, a light polarization layer on top of the array of micro-lenses, a polarization rotation layer, a light reflection layer, and a section of non-polarizing light scattering material for individual micro-lenses in the array of micro-lenses. In use, light from a projector associated with the screen is substantially scattered by the non-polarizing light scattering material and light from a projector associated with a different screen in the immersive display system is substantially absorbed by the polarization layer.

Claims

1. A screen for use in an immersive display system, the screen comprising:

a multilayer structure comprising;

an array of micro-lenses, individual lenses in the array of micro-lenses having a width D;

a layer of light polarization material;

a polarization rotation layer;

a light reflection layer; and

a section of non-polarizing light scattering material for individual micro-lenses in the array of micro-lenses;

wherein the section of non-polarizing light scattering material has a width that is less than the width D,

wherein, in use, light from a projector associated with the screen is substantially scattered by the non-polarizing light scattering material and light from a projector associated with a different screen in the immersive display system is substantially absorbed by the polarization layer.

2. The screen of claim 1, wherein the array of micro-lenses comprises spherical micro-lenses.

3. The screen of claim 2, wherein the array of micro-lenses further comprises aspherical micro-lenses.

4. The screen of claim 1, wherein the array of micro-lenses comprises cylindrical micro-lenses.

5. The screen of claim 4, wherein the array of micro-lenses further comprises cylindrical micro-lenses having an aspheric shape in a plane perpendicular to a longitudinal axis of the cylindrical micro-lens.

6. The screen of claim 4, wherein each section of non-polarizing light scattering material forms a strip parallel to a longitudinal axis of the associated cylindrical micro-lens.

7. The screen of claim 1 further comprising perforations positioned at transitions between micro-lenses in the array of micro-lenses.

8. The screen of claim 7, wherein the perforations in the array of perforations are located at corners between spherical micro-lenses.

9. The screen of claim 7, wherein the perforations in the array of perforations are located at edges between cylindrical micro-lenses.

10. The screen of claim 7, wherein the perforations in the array of perforations are equidistant along a straight line.

11. The screen of claim 7, wherein the perforations in the array of perforations are circular.

12. An immersive display system comprising one or more of the screens of claim 1.

13. The immersive display system of claim 12, wherein the one or more screens are curved.

14. A screen for use in an immersive display system, the screen comprising:

a multilayer structure comprising;

an array of micro-mirrors, individual mirrors in the array of micro-mirrors having a width D;

a polarization rotation layer;

a linear polarization layer; and

a section of non-polarizing light scattering material for individual micro-mirrors in the array of micro-mirrors;

wherein the section of non-polarizing light scattering material has a width that is less than the width D,

wherein, in use, light from a projector associated with the screen is substantially scattered by the non-polarizing light scattering material and light from a projector associated with a different screen in the immersive display system is substantially absorbed by the polarization layer.

15. The screen of claim 14, wherein the array of micro-mirrors comprises spherical micro-mirrors.

16. The screen of claim 15, wherein the array of micro-mirrors further comprises aspherical micro-mirrors.

17. The screen of claim 14, wherein the array of micro-mirrors comprises cylindrical micro-mirrors.

18. The screen of claim 17, wherein each section of non-polarizing light scattering material forms a strip parallel to a longitudinal axis of the associated cylindrical micro-mirror.

19. The screen of claim 14 further comprising perforations positioned at transitions between micro-mirrors in the array of micro-mirrors.

20. An immersive display system comprising one or more of the screens of claim 14.