Split static surround display system

• US 5,264,881 A
• Filed: 06/03/1992
• Issued: 11/23/1993
• Est. Priority Date: 06/03/1992
• Status: Expired due to Term

• Current Assignee: L-3 Communications Corporation (L3Harris Technologies, Inc.)
• Original Assignee: Hughes Training, Inc. (Rtx Corporation)
• Inventors: Brooke, Kenneth R.
• Primary Examiner(s): Cuchlinski, Jr., William A.
• Assistant Examiner(s): Dowling, William C.
• Application Number:
  US07/894,047
• Time in Patent Office: 538 Days
• Field of Search: 353/94, 353/98, 353/99, 353/34, 353/37, 353/30, 352/69, 352/70, 352/71, 359/449, 359/451
• US Class Current: 353/94
• CPC Class Codes: G03B 21/28 Reflectors in projection beam in illumination beam G03B21/2066
• CPC Class Codes: G03B 21/56 Projection screens
• CPC Class Codes: G03B 37/04 with cameras or projectors providing touching or overlapping fields of view
• CPC Class Codes: G09B 9/32 by projected image G09B9/307, G09B9/36 take precedence
• CPC Class Codes: H04N 9/31 Projection devices for colour picture display , e.g. using electronic spatial light modulators [ESLM]

Abstract

An inexpensive surround display system. In most general terms, the invention (10) includes a projector arrangement (12, 14, 16) for providing at least one beam of energy representative of an image. A beamsplitter arrangement (18, 20, 22) splits the beam into a first beam and a second beam. A screen (24) is provided for displaying a first image in response to the first beam and for displaying a second image in response to the second beam. More particularly, the method of the invention may be described as: a) determining a viewing angle of a viewer; b) determining whether an image or the mirror image thereof should be projected within the field-of-view of the viewer based on the viewing angle of the viewer; c) providing first, second and third beams of energy representative of a first, second and third images or the mirror images thereof based on step b); d) splitting the first beam to provide a first image and a diametrically opposed second image; e) splitting the second beam to provide a third image and a diametrically opposed fourth image; f) splitting the third beam to provide a fifth image and a diametrically opposed sixth image; and g) simultaneously displaying the first, second, third, fourth, fifth and sixth images.

Claims

1. A surround display system comprising:

projector means for providing a beam of energy representative of an image;

beamsplitter means for splitting said beam of energy into a first beam and a second beam; and

screen means for displaying a first image in response to said first beam and for displaying a second image in response to said second beam;

wherein said projector means includes means for providing a beam representative of a mirror image of said image;

wherein said projector means includes first, second and third image projectors, wherein said first and third projectors are mounted in diametric opposition;

wherein said second and third projectors are mounted in face-to-face relation on either side of a line equidistant from said second and said third projectors and extending through a center of said projection system;

wherein said beamsplitter means include a first beamsplitter for splitting the beam from the first projector to provide a first image on said screen means and a diametrically opposed second image on said screen means;

wherein said beamsplitter means includes a second beamsplitter for splitting the beam from the second projector to provide a third image on said screen means and a diametrically opposed fourth image on said screen means.

2. The invention of claim 1 wherein said fourth image is the mirror image of said third image.

3. The invention of claim 1 wherein said beamsplitter means includes third a beamsplitter for splitting the beam from the third projector to provide a fifth image on said screen means and a diametrically opposed sixth image on said screen means.

4. The invention of claim 3 wherein said sixth image is the mirror image of said fifth image.

5. A surround display system comprising:

projector means for providing a beam of energy representative of an image;

beamsplitter means for splitting said beam of energy into a first beam and a second beam;

screen means for displaying a first image in response to said first beam and for displaying a second image in response to said second beam;

wherein said projector means includes means for determining a viewing angle of a viewer; and

first processor means responsive to said means for determining a viewing angle of a viewer for determining whether an image or the mirror image thereof should be displayed within the field-of-view of the viewer.

6. The invention of claim 5 wherein said projector means includes an image generator.

7. The invention of claim 13 wherein said screen means includes a hexagonal screen.

8. The invention of claim 13 wherein said screen means includes a circular screen.

9. A surround display system comprising:

projector means for providing first, second and third beams of energy representative of an image, said projector means including;

first, second and third image projectors for providing said first, second and third beams of energy, said first and said third projectors being mounted in diametric opposition and said second and third projectors being mounted in face-to-face relation on either side of a line equidistant from said second and said third projector and extending through a center of said projection system,

means for determining a viewing angle of a viewer, and

first processor means responsive to said means for determining a viewing angle of a viewer for determining whether an image or the mirror image thereof should be projected by one or more of said projectors;

beamsplitter means for splitting said first, second and third beams of energy, said beamsplitter means including;

a first beamsplitter for splitting the beam from the first projector to provide a first image and a diametrically opposed second image, said second image being the mirror image of said first image,

a second beamsplitter for splitting the beam from the second projector to provide a third image and a diametrically opposed fourth image, said fourth image being the mirror image of said third image, and

a third beamsplitter for splitting the beam from the third projector to provide a fifth image and a diametrically opposed sixth image, said sixth image being the mirror image of said fifth image; and

screen means including at least one screen for simultaneously displaying said first, second, third, fourth, fifth and sixth images.

10. The invention of claim 9 wherein said screen is a hexagonal screen.

11. A method for providing a surround display including the steps of:

a) determining a viewing angle of a viewer;

b) determining whether an image or the mirror image thereof should be projected within the field-of-view of the viewer based on the viewing angle of said viewer;

c) providing first, second and third beams of energy representative of a first, second and third images or the mirror images thereof based on step b);

d) splitting the first beam to provide a first image and a diametrically opposed second image;

e) splitting the second beam to provide a third image and a diametrically opposed fourth image;

f) splitting the third beam to provide a fifth image and a diametrically opposed sixth image; and

g) simultaneously displaying said first, second, third, fourth, fifth and sixth images.