THREE-DIMENSIONAL IMAGE REPRODUCING APPARATUS

• US 20090195873A1
• Filed: 01/16/2009
• Published: 08/06/2009
• Est. Priority Date: 01/17/2008
• Status: Abandoned Application

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: Kubara, Takashi
• Application Number:
  US12/355,095
• Publication Number:
  US 20090195873A1
• Time in Patent Office: Days
• US Class Current: 359/463
• CPC Class Codes: G02B 30/27 involving lenticular arrays
• CPC Class Codes: G02B 5/32 Holograms used as optical elements
• CPC Class Codes: H04N 13/305 using lenticular lenses, e.g. arrangements of cylindrical lenses
• CPC Class Codes: H04N 13/307 using fly-eye lenses, e.g. arrangements of circular lenses
• CPC Class Codes: H04N 13/31 using parallax barriers
• CPC Class Codes: H04N 13/398 Synchronisation thereof; Control thereof

Abstract

The invention provides a three-dimensional image reproducing apparatus that enables stable provision of a three-dimensional image display by preventing occurrence of crosstalk between adjacent lenses or adjacent hologram optical elements and eliminating shift of a three-dimensional image. The three-dimensional image reproduce apparatus of the invention includes an array of adjacent optical elements, which is an array of lenticular lens, an fly-eye lens array and an array of hologram optical elements, and a cross-talk prevent part preventing cross-talk between the adjacent optical elements and having an image source providing a plurality of images each of which has a different parallax information.

Claims

1. A three-dimensional image reproduce apparatus comprising:

an array of adjacent optical elements, which is an array of lenticular lens, an fly-eye lens array or an array of hologram optical elements;

a cross-talk prevent part preventing cross-talk between the adjacent optical elements, and having an image source providing a plurality of images each of which has a different parallax information.

2. The image reproduce apparatus according to claim 1, wherein the cross-talk prevent part comprises:

the plurality of images provided by the image source and on a focus plane of the array so that a polarized characters of a ray from each of the images are different from each other in order that the ray passes through corresponding one of the optical elements; and

a polarizing plate provided on an emitting side of the optical elements and having a polarized character which is different on the adjacent optical elements and same on the next adjacent optical elements.

3. The image reproduce apparatus according to claim 2, wherein the polarized characters are transverse and longitudinal polarization.

4. The image reproduce apparatus according to claim 2, wherein the polarized characters are right-circular and left-circular polarization.

5. The image reproduce apparatus according to claim 1, wherein the cross-talk prevent part comprises:

a first plane-convex lens and a second plane-convex lens wherein the first and the second plane-convex lenses are combined so as to direct a convex side of each of the plane-convex lenses to outside.

6. The image reproduce apparatus according to claim 5, wherein the convex surface of the first plane-convex lens faces to the images;

and

a curvature radius of the first plane-convex lens is smaller than that of the second plane-convex lens.

7. The image reproduce apparatus according to claim 5, wherein the convex surface of the first plane-convex lens faces to the images;

and

a refraction index of the first plane-convex lens is smaller than that of the second plane-convex lens.

8. The image reproduce apparatus according to claim 5, wherein the first and the second plane-convex lens are made from episulfide resin.

9. The image reproduce apparatus according to claim 1, wherein the cross-talk prevent part comprises:

the plurality of images provided by the image source; and

a wave guide closely-attached to the images so as to optically separate the adjacent optical elements by directing rays from the images to a principal point of lenses.

10. The image reproduce apparatus according to claim 9, wherein the wave guide is formed from a eyesight restriction film.

11. The image reproduce apparatus according to claim 9, wherein the wave guide is formed from a glass fiber.

12. The image reproduce apparatus according to claim 1, wherein the cross-talk prevent part comprises a plurality of micro-lenses provided on each pixel of the images to be reproduced.

13. The image reproduce apparatus according to claim 12, wherein the micro lenses are formed from episulfide resin.

14. The image reproduce apparatus according to claim 12, wherein the micro lenses are formed by screen print.

15. The image reproduce apparatus according to claim 1, wherein the cross-talk prevent part comprises a plurality of convex lenses each of which are provided on an input optical path of each of the optical elements.

16. The image reproduce apparatus according to claim 15, wherein the focal point of each of the convex lenses coincides with the principal point of respective one of the optical elements.

17. The image reproduce apparatus according to claim 1, wherein the cross-talk prevent part comprises a hologram surface provided on a common input optical path of the array.

18. The image reproduce apparatus according to claim 17, wherein the focal point of the hologram surface is coincide with the principal point of the optical elements.

19. The image reproduce apparatus according to claim 17, wherein the hologram surface is a volume hologram.

20. The image reproduce apparatus according to claim 1, wherein the image source has a light source provided on a focal point of a quadratic curve or free curve so as to emit rays same in number as a parallax number to parallax direction.

21. The image reproduce apparatus according to claim 20, wherein the light source is a laser.

22. The image reproduce apparatus according to claim 20, wherein the light source is a LED.

23. The image reproduce apparatus according to claim 20, wherein the light source is an organic LED.

24. The image reproduce apparatus according to claim 1, wherein the cross-talk prevent part comprises:

a convex lens;

a quadratic curve projecting a ray into a parallax direction, wherein the ray is emitted from a light source provided on a focal point of the quadratic curve;

a translucent type spatial modulator provided between the convex lens and the light source and modulating the projected ray.

25. The image reproduce apparatus according to claim 24, wherein the light source is a laser.

26. The image reproduce apparatus according to claim 24, wherein the light source is a LED.

27. The image reproduce apparatus according to claim 24, wherein the light source is an organic LED.

28. The image reproduce apparatus according to claim 24, wherein the spatial modulator is formed from a translucent type liquid crystal.

29. The image reproduce apparatus according to claim 1, wherein the cross-talk prevent part comprises a relay optical system projecting an image once reproduced by another optical system by a parabola surface, optical fiber and optical rod.

30. The image reproduce apparatus according to claim 29, wherein the optical rod is a refractive index distributed type rod lens.