Optical concatenation for field sequential stereoscpoic displays

• US 20080239067A1
• Filed: 04/02/2007
• Published: 10/02/2008
• Est. Priority Date: 04/02/2007
• Status: Abandoned Application

• Current Assignee: RealD Incorporated
• Original Assignee: Real D
• Inventors: Lipton, Lenny
• Application Number:
  US11/732,303
• Publication Number:
  US 20080239067A1
• Time in Patent Office: Days
• US Class Current: 348/54
• CPC Class Codes: H04N 13/324 Colour aspects
• CPC Class Codes: H04N 13/334 using spectral multiplexing
• CPC Class Codes: H04N 13/337 using polarisation multiplexing
• CPC Class Codes: H04N 13/363 using image projection screens volumetric display H04N13/388

Abstract

A device used in projecting or transmitting stereoscopic images is provided. The device includes a multi-section light emitter, such as a “color wheel or a series of light emitting diodes (LEDs) configured to emit light energy in multiple sections. Each section of light energy has an optical attribute associated therewith, such as color. Light energy projected in at least two sequential sections by the multi-section light emitter provides light energy having identical optical attributes, such as identical colors (red, green, or blue) but different perspective views associated with each sequential section, where the same optical attributes being employed in adjacent sections is referred to as “concatenation.” Different polarization attributes or polarization axis orientations may be employed within each section to facilitate stereoscopic image transmission and such concatenation in many cases reduces “judder” or other adverse visual effects.

Claims

1. A device configured to project stereoscopic images, comprising:

a multi-section light emitter configured to emit light energy in multiple sections, each section having an optical attribute associated therewith, wherein light energy projected in at least two sequential sections by the multi-section light emitter provides light energy having identical optical attributes but different perspective views associated with each sequential section.

2. The device of claim 1, wherein the optical attribute comprises color.

3. The device of claim 1, wherein the multi-section light emitter comprises a rotating projection wheel.

4. The device of claim 1, wherein the multi-section light emitter comprises a series of light emitting diodes.

5. The device of claim 1, wherein each section is polarized and has a polarization direction associated therewith, and polarization direction differs between at least two adjacent sections.

6. The device of claim 1, wherein each section is polarized and has a polarization orientation associated therewith, and polarization direction is similar for at least two adjacent sections.

7. The device of claim 2, wherein the multi-segment light emitter emits at least two adjacent red sections, at least two adjacent blue sections, and at least two adjacent green sections.

8. The device of claim 1, wherein said device is configured to be employed within a rear projection television device.

9. The device of claim 1, wherein the device is configured to be employed within a front projection screen arrangement.

10. The device of claim 1, wherein each section of the wheel is polarized by a polarization filter attached to the section.

11. A color wheel comprising:

a plurality of segments, each segment comprising;

a colored substantially transparent element; and

a perspective view attribute associated with the colored substantially transparent element;

wherein at least two adjacent segments of the color wheel share the same color but transmission therethrough of light energy results in projected light energy having different perspective view attributes, wherein the use of different perspective view attributes enables stereoscopic image viewing.

12. The color wheel of claim 11, wherein each segment further has a polarization attribute and a polarization direction associated therewith, and polarization direction differs between at least two adjacent segments.

13. The color wheel of claim 11, wherein each segment has a polarization attribute and a polarization orientation associated therewith, and polarization direction is similar for at least two adjacent segments.

14. The color wheel of claim 11, wherein the wheel comprises at least two adjacent red segments, at least two adjacent blue segments, and at least two adjacent green segments.

15. The color wheel of claim 11, wherein said device is configured to be employed within a rear projection television device.

16. The color wheel of claim 11, wherein the device is configured to be employed within a front projection screen arrangement.

17. The color wheel of claim 11, wherein each segment of the wheel is polarized by a polarization filter attached to the segment.

18. A stereoscopic image projection device, comprising:

a light source configured to provide light energy in sections, each section having an optical attribute associated therewith, and further wherein at least two adjacent sections provided by the light source have identical optical attributes and different perspective views;

an image engine positioned proximate the light source; and

a lens positioned proximate the light source and the image engine.

19. The stereoscopic image projection device of claim 18, wherein the light source comprises a plurality of light emitting diodes.

20. The stereoscopic image projection device of claim 18, wherein the light source comprises a rotating projection wheel.

21. The stereoscopic image projection device of claim 20, wherein the image engine is positioned between the light source and the rotating projection wheel.

22. The stereoscopic image projection device of claim 20, wherein the rotating projection wheel is positioned between the light source and the image engine.

23. The stereoscopic image projection device of claim 18, wherein the optical attribute comprises color.

24. The stereoscopic image projection device of claim 18, wherein each section is polarized and has a polarization direction associated therewith.

25. A device configured to display stereoscopic images, comprising:

multi-section light emitters configured to emit light energy in multiple sections, each section emitted having an optical attribute associated therewith, wherein light energy displayed in at least two sequential sections of the multi-section light emitter provides light energy having identical optical attributes but different perspective views associated with each sequential section.

26. The device of claim 25, wherein the optical attribute comprises color.