Apparatus and method for creating a real image illusion

• US 5,257,130 A
• Filed: 01/30/1992
• Issued: 10/26/1993
• Est. Priority Date: 01/30/1992
• Status: Expired due to Term

• Current Assignee: Disney Enterprises Incorporated (The Walt Disney Company)
• Original Assignee: The Walt Disney Company
• Inventors: Monroe, Marshall M.
• Primary Examiner(s): Bovernick, Rodney B.
• Assistant Examiner(s): Lester, Evelyn A.
• Application Number:
  US07/829,698
• Time in Patent Office: 635 Days
• Field of Search: 359/478
• US Class Current: 359/478
• CPC Class Codes: G02B 17/0621 off-axis or unobscured systems in which not all of the mirrors share a common axis of rotational symmetry, e.g. at least one of the mirrors is warped, tilted or decentered with respect to the other elements
• CPC Class Codes: G02B 27/0018 with means for preventing ghost images anti-reflection coatings G02B1/11
• CPC Class Codes: G02B 30/56 by projecting aerial or floating images
• CPC Class Codes: G09F 19/18 involving the use of optical projection means, e.g. projection of images on clouds projection apparatus per se G03B

Abstract

An apparatus and method for creating real image illusions utilizes a partially transparent scrim positioned between the real image and an optical system which produces the real image from a corresponding real object. When the scrim is illuminated by a light source or projector in front of and at an oblique angle to the scrim, the scrim forms a seemingly solid and non-transparent surface that conceals the optical system from view by an observer. The scrim also protects the optical system from damage and other vandalism, yet it does not distort or interfere with the light rays passing through the scrim to form the real image. The scrim also avoids distracting surface reflections, ghosting and other highlights.

Claims

1. An apparatus for creating a real image illusion, comprising:

(a) a selectively transparent screen having a plurality of apertures;

(b) a real object source and a device behind the screen for producing light rays, corresponding to the real object source, which pass through the apertures in the screen and converge to form a real image in front of the screen; and

(c) a light source for projecting light rays onto the screen and creating the appearance of a solid and non-transparent surface which prevents visual access behind the screen.

2. The apparatus of claim 1, wherein the light source is positioned in front of and at an oblique angle to the screen.

3. The apparatus of claim 1, wherein the light source is positioned behind and at an oblique angle to the screen.

4. The apparatus of claim 1, wherein the light source is a projector positioned in front of or behind the screen.

5. The apparatus of claim 4, wherein the projector is positioned in front of and at an oblique angle to the screen.

6. The apparatus of claim 5, wherein the oblique angle is approximately 45 degrees.

7. The apparatus of claim 5, wherein the projector comprises an overhead projector for producing a static image on the screen.

8. The apparatus of claim 5, wherein the projector comprises a motion picture projector for producing dynamic images on the screen.

9. The apparatus of claim 5, wherein the real object source and the projector are configured and synchronized with each other to produce a dynamic real image in front of the screen which interacts with a dynamic visual image on the screen.

10. The apparatus of claim 9, wherein the real image is scalable.

11. The apparatus of claim 1, wherein the real object source comprises a real object produced by a CRT, a laser scan focused on a substantially black background, or a video or film projector focused on a rear projection screen.

12. The apparatus of claim 1, wherein the screen comprises a scrim with a density of between approximately five and fifteen points per inch.

13. The apparatus of claim 1, wherein the screen comprises a medium density scrim having approximately ten points per inch.

14. The apparatus of claim 1, further comprising a sound source placed in the region of the real object source for creating a real image sound in the region of the real image.

15. The apparatus of claim 14, wherein the sound source is a loudspeaker.

16. An apparatus for creating a real image illusion, comprising:

(a) a selectively transparent scrim;

(b) a real object source and a device behind the scrim for producing a real image, corresponding to the real object source, in front of the scrim; and

(c) a projector in front of and at an oblique angle to the scrim for projecting an image onto the scrim and substantially concealing the device for producing the real image from view by an observer.

17. The apparatus of claim 16, wherein the oblique angle is approximately 45 degrees.

18. The apparatus of claim 16, wherein the scrim has a density of between approximately five and fifteen points per inch.

19. The apparatus of claim 16, wherein the scrim has a density of approximately ten points per inch.

20. The apparatus of claim 16, wherein the scrim is constructed from a woven material comprised of fine threads which intersect each other to form a plurality of apertures, wherein each of the apertures has a dimension of approximately 0.045 inch to 0.060 inch, and wherein the apertures are spaced apart from each other by approximately 0.010 inch.

21. The apparatus of claim 16, wherein the scrim has a density that allows light rays, which converge to form the real image, to pass through apertures in the scrim to produce the real image in front of the scrim, and that allows the light rays from the projector in front of the scrim to illuminate the scrim so that the device for producing the real image behind the scrim is substantially concealed from view by the observer.

22. The apparatus of claim 16, wherein the real object source comprises a real three-dimensional physical object.

23. The apparatus of claim 16, wherein the real object source comprises a motion picture medium.

24. The apparatus of claim 23, wherein the motion picture medium comprises a laser scan focused on a substantially black background, or a video or film projector focused on a rear projection screen.

25. The apparatus of claim 16, wherein the real object source is a CRT.

26. The apparatus of claim 16, wherein the real image is scalable.

27. The apparatus of claim 26, wherein a CRT is used to produce a scalable visual image as the real object source to thereby enable corresponding scaling of the real image.

28. The apparatus of claim 26, wherein the scrim is movable with respect to the real image along an axis that is substantially perpendicular to the scrim so as to make the real image scalable.

29. The apparatus of claim 16, wherein the projector in front of the scrim comprises a light source for projecting light rays onto the scrim.

30. The apparatus of claim 16, wherein the projector in front of the scrim comprises an overhead, video or film projector.

31. The apparatus of claim 16, wherein the device for producing the real image is an optical system.

32. The apparatus of claim 31, wherein the optical system is a transmissive optical system.

33. The apparatus of claim 31, wherein the optical system is a reflective optical system.

34. The apparatus of claim 33, wherein the optical system comprises two parabolic reflectors which face each other in such a way that the real object source behind the scrim and the real image in front of the scrim lie substantially along a common optical axis.

35. An apparatus for creating a real image illusion, comprising:

(a) a real object source and a device for producing a real image corresponding to the real object source;

(b) a selectively transparent screen that allows light rays corresponding to the real image to pass through the screen to form the real image in front of the screen, wherein the screen is movable with respect to the real image such that the screen may be moved through the real image to a plurality of positions behind or in front of the real image; and

(c) a light source for projecting light rays onto the screen.

36. The apparatus of claim 35, wherein the screen is movable in a plurality of directions with respect to the real image.

37. A method for creating a real image illusion, comprising:

(a) erecting a selectively transparent screen having a plurality of apertures;

(b) producing a real image in front of the screen by utilizing a real object source and a device behind the screen for producing light rays, corresponding to the real object source, which pass through the apertures in the screen and converge to form the real image in front of the screen; and

(c) projecting light rays onto the screen such that the screen appears to be a non-transparent surface preventing visual access behind the screen.

38. The method of claim 37, further comprising projecting the light rays onto the screen from an oblique angle to the screen.

39. The method of claim 38, comprising projecting the light rays from a location in front of or behind the screen.

40. The method of claim 37, further comprising projecting a visual image on the front of the screen by a projector located at an oblique angle to the screen.

41. The method of claim 37, further comprising producing a dynamic real image in front of the screen and a dynamic visual image on the screen.

42. The method of claim 41, comprising synchronizing and coordinating the real image and the visual image such that the images appear to interact with each other.

43. The method of claim 42, further comprising scaling the real image with respect to the visual image.

44. The method of claim 37, further comprising moving the screen in a plurality of directions with respect to the real image.

45. The method of claim 44, comprising moving the screen along an axis substantially perpendicular to the screen such that the screen is selectively moved in front of and behind the real image.

46. The method of claim 40, further comprising distorting the image projected by the projector at an oblique angle such that the visual image projected onto the screen is substantially non-distorted.

47. An amusement ride, comprising:

(a) a ride vehicle for moving guests along a path through the amusement ride;

(b) a selectively transparent screen having a plurality of apertures, wherein the screen is positioned along the path and is observable by the guests;

(c) a real object source and a device behind the screen for producing light rays, corresponding to the real object source, which pass through the apertures in the screen to form a real image in front of the screen that is observable by the guests; and

(d) a light source for projecting light rays onto the screen and creating the appearance of a solid surface concealing the real object source and device from view.

48. The amusement ride of claim 47, wherein the light source is a projector positioned at an oblique angle to the screen for projecting static or dynamic visual images on the screen.

49. The amusement ride of claim 48, wherein the light source is positioned in front of or behind the screen.

50. The amusement ride of claim 48, wherein the real image is a dynamic real image that is coordinated and synchronized to interact with the visual image projected on the screen.

51. The amusement ride of claim 50, further comprising a sound source in the region of the real object source for producing a real image sound in the region of the real image.

52. The amusement ride of claim 47, wherein the screen is selectively movable with respect to the real image such that the screen may be moved to a plurality of positions, including positions in front of and behind the real image.

53. The amusement ride of claim 47, wherein the real image is scalable.