Astigmatic lenticular projector system

• US 5,971,547 A
• Filed: 07/22/1997
• Issued: 10/26/1999
• Est. Priority Date: 07/22/1997
• Status: Expired due to Fees

• Current Assignee: Peter Reilley
• Original Assignee: Peter Reilley
• Inventors: Reilley, Peter
• Primary Examiner(s): DOWLING, WILLIAM C
• Application Number:
  US08/899,065
• Time in Patent Office: 826 Days
• Field of Search: 353/46, 353/38, 353/62, 353/97, 353/122, 353/7, 353/8, 353/10, 359/232, 359/205, 359/207, 359/668, 359/670, 359/210, 359/209, 359/216, 359/15, 359/16, 359/17, 359/19, 359/20, 359/448, 359/458, 359/463, 359/464, 359/465, 359/466, 359/471 , 359/475
• US Class Current: 353/122
• CPC Class Codes: G03B 21/14 Details
• CPC Class Codes: G03B 21/625 Lenticular translucent screens
• CPC Class Codes: G03B 35/26 using polarised or coloured light separating different viewpoint images
• CPC Class Codes: H04N 13/305 using lenticular lenses, e.g. arrangements of cylindrical lenses
• CPC Class Codes: H04N 13/337 using polarisation multiplexing
• CPC Class Codes: H04N 13/363 using image projection screens volumetric display H04N13/388

Abstract

An astigmatic lenticular projector system includes a beam former for generating a family of planar light beams representative of an object; and an image former for diverging the light in each of the planar light beams transversely to the plane of the beams and not diverging the light along the plane of the beams for generating a viewable astigmatic image.

Claims

1. An astigmatic lenticular projector system comprising:

beam forming means for generating a family of planar light beams representative of an object; and

image forming means for diverging the light in each of said planar light beams transversely to the plane of said beams and not diverging said light along the plane of the beams for generating a viewable astigmatic image irrespective of the distances between said image forming means, said beam forming means, and said object.

2. The astigmatic lenticular projector system of claim 1 in which said beam forming means and said image forming means create a first focal length for the astigmatic image along the plane of said planar light beams and a second focal length for the astigmatic image transverse to the plane of said planar light beams.

3. The astigmatic lenticular projector system of claim 1 in which said beam forming means includes a mask with an elongate slit.

4. The astigmatic lenticular projector system of claim 1 in which said image forming means includes a parallel array of astigmatic lenses.

5. The astigmatic lenticular projector system of claim 4 in which said parallel array of astigmatic lenses includes cylindrical lenses.

6. The astigmatic lenticular projector system of claim 1 in which said image forming means includes a lenticular array of lenticules.

7. The astigmatic lenticular projector system of claim 1 in which said image forming means includes a holographic element.

8. The astigmatic lenticular projector system of claim 5 in which said cylindrical lenses are concave.

9. The astigmatic lenticular projector system of claim 5 in which said cylindrical lenses are convex.

10. The astigmatic lenticular projector system of claim 1 in which said beam forming means includes a light source for creating a planar primary light beam and scanner means for sweeping said primary light beam across said image forming means to create said family of planar light beams.

11. The astigmatic lenticular projector system of claim 10 in which said light source includes a source of illumination and a mask with an elongate slit.

12. The astigmatic lenticular projector system of claim 10 in which said scanner means includes a rotatable multifaceted mirror wheel and means for rotating said mirror wheel.

13. The astigmatic lenticular projector system of claim 1 in which said light source includes a set of discrete illuminator elements for creating a set of scan lines in the astigmatic image.

14. The astigmatic lenticular projector system of claim 10 in which said light source includes a number of sets of discrete illumination elements each set having a different color.

15. The astigmatic lenticular projector system of claim 1 wherein said imaging means has a plurality of viewing angles in which said image forming means includes a cylindrical aligning lens with its axis parallel to the axis of the form of planar light beams for aligning said plurality of viewing angles across the image forming means.

16. The astigmatic lenticular projector system of claim 2 in which said image forming means include astigmatic correction lens means for relatively adjusting said focal lengths towards each other.

17. The astigmatic lenticular projector system of claim 16 in which said astigmatic correction lens means equalizes said focal lengths.

18. The astigmatic lenticular projector system of claim 16 in which said astigmatic correction lens means includes a convex cylindrical lens.

19. The astigmatic lenticular projector system of claim 16 in which said astigmatic correction lens means includes a concave cylindrical lens.

20. The astigmatic lenticular projector system of claim 1 in which said image forming means includes a magnifying lens for enlarging the image in the direction parallel to the family of planar beams.

21. The astigmatic lenticular projector system of claim 20 in which said magnifying lens is a cylindrical lens with its axis transverse to the family of planar beams.

22. The astigmatic lenticular projector system of claim 1 in which said light is visible light.

23. The astigmatic lenticular projector system of claim 1 in which said beam forming means includes polarizing means for generating dual images of opposite polarization for creating three dimensional images.

24. The astigmatic lenticular projector system of claim 12 in which said facets are tilted relative to one another to increase the number of scan lines.

25. The astigmatic lenticular projector system of claim 12 in which each facet includes a number of inclined sections to increase the number of scan lines.

26. The astigmatic lenticular projector system of claim 16 in which said astigmatic corrective lens creates a virtual image of one of said images at the focal plane of the other.

27. An astigmatic lenticular projector system comprising:

beam forming means for generating a family of planar light beams representative of an object, where said beam forming means includes a light source, having a source of illumination and a mask with an elongate slit, for creating a planar primary light beam and a scanner means for sweeping said primary light beam across said image forming means to create said family of planar light beams; and

image forming means for diverging the light in each of said planar light beams transversely to the plane of said beams and not diverging said light along the plane of the beams for generating a viewable astigmatic image.

28. An astigmatic lenticular projector system comprising:

beam forming means for generating a family of planar light beams representative of an object, where said beam forming means includes a light source, having a number of sets of discrete illumination elements each set having a different color, for creating a planar primary light beam and a scanner means for sweeping said primary light beam across said image forming means to create said family of planar light beams; and

image forming means for diverging the light in each of said planar light beams transversely to the plane of said beams and not diverging said light along the plane of the beams for generating a viewable astigmatic image.

29. An astigmatic lenticular projector system comprising:

beam forming means for generating a family of planar light beams representative of an object, where said beam forming means and said image forming means create a first focal length for the astigmatic image along the plane of said planar light beams and a second focal length for the astigmatic image transverse to the plane of said planar light beams; and

image forming means, including astigmatic correction lens means for relatively adjusting said focal lengths towards each other, for diverging the light in each of said planar light beams transversely to the plane of said beams and not diverging said light along the plane of the beams for generating a viewable astigmatic image.

30. The astigmatic lenticular projector system of claim 29 in which said astigmatic correction lens means equalizes said focal lengths.

31. The astigmatic lenticular projector system of claim 29 in which said astigmatic correction lens includes a convex cylindrical lens.

32. The astigmatic lenticular projector system of claim 29 in which said astigmatic correction lens includes a concave cylindrical lens.

33. An astigmatic lenticular projector system comprising:

beam forming means for generating a family of planar light beams representative of an object, where said beam forming means includes a light source, having a source of illumination and a mask with an elongate slit, for creating a planar primary light beam and a scanner means for sweeping said primary light beam across said image forming means to create said family of planar light beams; and

image forming means for diverging the light in each of said planar light beams transversely to the plane of said beams and not diverging said light along the plane of the beams for generating a viewable astigmatic image;

where said scanner means includes a rotatable multifaceted mirror wheel and means for rotating said mirror wheel, where said facets are tilted relative to one another to increase the number of scan lines.

34. An astigmatic lenticular projector system comprising:

beam forming means for generating a family of planar light beams representative of an object, where said beam forming means includes a light source, having a source of illumination and a mask with an elongate slit, for creating a planar primary light beam and a scanner means for sweeping said primary light beam across said image forming means to create said family of planar light beams; and

image forming means for diverging the light in each of said planar light beams transversely to the plane of said beams and not diverging said light along the plane of the beams for generating a viewable astigmatic image;

where said scanner means includes a rotatable multifaceted mirror wheel and means for rotating said mirror wheel, where each said facet includes a number of inclined sections to increase the number of scan lines.

35. An astigmatic lenticular projector system comprising:

beam forming means for generating a family of planar light beams representative of an object, where said beam forming means and said image forming means create a first focal length for the astigmatic image along the plane of said planar light beams and a second focal length for the astigmatic image transverse to the plane of said planar light beams; and

image forming means, including astigmatic correction lens means which creates a virtual image of one of said images at the focal plane of the other for relatively adjusting said focal lengths towards each other, for diverging the light in each of said planar light beams transversely to the plane of said beams and not diverging said light along the plane of the beams for generating a viewable astigmatic image.