Apparatus and method for producing 3-dimensional images

• US 5,255,028 A
• Filed: 05/15/1992
• Issued: 10/19/1993
• Est. Priority Date: 05/15/1992
• Status: Expired due to Fees

• Current Assignee: Tom Hennes
• Original Assignee: Kevin Biles
• Inventors: Biles, Kevin
• Primary Examiner(s): Cuchlinski, Jr., William A.
• Assistant Examiner(s): Dowling, William C.
• Application Number:
  US07/883,676
• Time in Patent Office: 522 Days
• Field of Search: 353/7, 353/10, 353/94, 353/30, 353/37, 353/98, 353/99, 353/119, 353/79, 359/458, 359/449, 359/462, 359/466, 359/471, 359/475, 359/477, 352/86, 352/87
• US Class Current: 353/7
• CPC Class Codes: G02B 30/56 by projecting aerial or floating images
• CPC Class Codes: G03B 35/20 using two or more projectors
• CPC Class Codes: H04N 13/346 using prisms or semi-transparent mirrors
• CPC Class Codes: H04N 13/395 with depth sampling, i.e. the volume being constructed from a stack or sequence of 2D image planes

Abstract

Systems and methods for producing the sensation of 3-dimensional viewing are disclosed. Apparent 3-dimensional images are produced by simultaneously projecting at least two related images onto at least two associated projection screens, creating planes of images with each image plane having its own depth characteristic. Then at least two images are reflected or transmitted simultaneously by ghost glass to viewers who observe a composite image. The composite image provides viewers with the illusion of depth in the form of an apparent 3-dimensional image.

Claims

1. A system for producing apparent 3-dimensional images, said system comprising:

a plurality of means for projecting images;

a plurality of rear projection screens, each of said rear projection screens having a rear surface and a front surface and transmitting 90 to 95 percent of light incident on said rear surface while absorbing 90 to 95 percent of light incident on said front surface, each of said rear projection screens being positioned to receive and transmit at least one of said projected images; and

at least one plate having a reflective surface and a transmissive surface, said plate being positioned to receive at least one of said transmitted images at said reflective surface for reflection to a viewer and said plate being positioned to receive at least one of said transmitted images at said transmissive surface for transmitting to said viewer.

2. The system for producing apparent 3-dimensional images of claim 1 wherein said plate is ghost glass.

3. A system for producing apparent 3-dimensional viewing, said system comprising:

means for projecting a first image;

means for projecting a second image;

a first projection screen positioned to receive and transmit said first image;

a second projection screen positioned to receive and transmit said second image, said second projection screen being disposed at a substantially 90°

angle to said first projection screen;

each of said first projection screen and said second projection screen transmitting at least 90 to 95 percent of the respective image received thereon, and each of said first projection screen and said second projection screen also absorbing 90 to 95 percent of light incident thereon from a respective direction opposite to said projected image; and

a glass plate having a reflective surface and a transmissive surface, said glass plate being positioned at a substantially 45°

angle to said first projection screen and at a substantially 45°

angle to said second projection screen, and wherein said reflective surface is disposed to reflect said first image and said transmissive surface is disposed to transmit said second image.

4. The system for producing apparent 3-dimensional images of claim 3 wherein said first projection screen and said second projection screen are rear projection screens.

5. The system for producing apparent 3-dimensional images of claim 3 wherein said glass plate is formed of ghost glass.

6. The system for producing apparent 3-dimensional images of claim 3 wherein said first and second projection screens are sized from approximately 3 feet to 10 feet in height and from 4 feet to 13.4 feet in width.

7. The system for producing apparent 3-dimensional images of claim 3 wherein said glass plate has a thickness of at least 1/4".

8. The system for producing apparent 3-dimensional images of claim 3 further including at least one mirror positioned for reflecting said first image to said first projection screen.

9. The system for producing apparent 3-dimensional images of claim 3 further including at least one mirror positioned for reflecting said second image to said second projection screen.

10. A system for producing apparent 3-dimensional viewing, said system comprising:

means for projecting a foreground image;

means for projecting a background image;

a first rear projection screen positioned to receive and transmit said foreground image;

a second rear projection screen positioned to receive said background image, said second rear projection screen disposed at a substantially 90°

angle to said first rear projection screen;

at least two foreground front silvered mirrors positioned to propagate said foreground image from said means for projecting a foreground image to said first rear projection screen;

at least two background front silvered mirrors positioned to propagate said background image from said means for projecting a background image to said second rear projection screen; and

a ghost glass plate having a reflective surface and a transmissive surface, said ghost glass plate positioned at a substantially 45°

angle to said first rear projection screen and positioned at a substantially 45°

angle to said second rear projection screen, and wherein said reflective surface is disposed to reflect said foreground image and said transmissive surface is disposed to transmit said background image.

11. The system for producing apparent 3-dimensional viewing of claim 10 wherein said first rear projection screen is from 3 feet to 10 feet in height and from 4 feet to 13.4 feet in width.

12. The system for producing apparent 3-dimensional viewing of claim 10 wherein said second rear projection screen is from 3 feet to 10 feet in height and from 4 feet to 13.4 feet in width.

13. The system for producing apparent 3-dimensional images of claim 10 wherein said at least two foreground front silvered projection mirrors are from 1 foot to 10 feet in height and from 4 feet to 13.4 feet in width.

14. The system for producing apparent 3-dimensional images of claim 10 wherein said at least two background front silvered projection mirrors are from 1 foot to 10 feet in height and from 4 feet to 13.4 feet in width.

15. The system for producing apparent 3-dimensional images of claim 10 wherein said ghost glass plate is sized from approximately 5'"'"'8" in width and approximately 4'"'"'4" in height and at least 1/16" in thickness.

16. A method for producing apparent 3-dimensional images comprising the steps of:

projecting a first image to a first rear projection screen;

transmitting at least 90 to 95 percent of said first image through said first rear projection screen;

simultaneously with projecting said first image, projecting a second image to a second rear projection screen, transmitting at least 90 to 95 percent of said second image through said second rear projection screen, positioning said second rear projection screen at a 90°

angle to said first rear projection screen;

positioning a ghost glass plate at a 45°

angle to said first rear projection screen and at a 45°

angle to said second rear projection screen, said ghost glass plate having a light reflecting surface and a light transmitting surface, positioning said light reflecting surface to reflect said first image and positioning said light transmitting surface to transmit said second image;

absorbing respectively with said first rear projection screen and said second rear projection screen 90 to 95 percent of light incident thereon from a direction opposite to said first and said second images; and

simultaneously causing said projected first image to reflect from said ghost glass plate and said projected second image to transmit from said ghost glass plate to form a composite apparent 3-dimensional image for viewing.

17. The process of claim 16 wherein said first image is a foreground image and said second image is a background image.

18. The process of claim 16 wherein projecting said first and second images to said first and second rear projection screens and positioning said ghost glass plate is carried out within a housing having dimensions of from about 3 feet×

4 feet to about 10 feet×

15 feet.