Stereoscopic viewing system

• US 5,615,046 A
• Filed: 01/23/1995
• Issued: 03/25/1997
• Est. Priority Date: 01/23/1995
• Status: Expired due to Fees

• Current Assignee: Cyber Scientific
• Original Assignee: Cyber Scientific
• Inventors: Gilchrist, Ian R.
• Primary Examiner(s): Dzierzynski, Paul M.
• Assistant Examiner(s): CHANG, AUDREY Y
• Application Number:
  US08/376,785
• Time in Patent Office: 792 Days
• Field of Search: 359/464, 359/465, 359/466, 359/472, 359/473, 359/462, 359/477, 359/474, 348/42, 348/51, 348/54, 345/6
• US Class Current: 359/464
• CPC Class Codes: G02B 30/34 Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers
• CPC Class Codes: H04N 13/339 using spatial multiplexing H04N13/337 takes precedence
• CPC Class Codes: H04N 13/398 Synchronisation thereof; Control thereof

Abstract

A stereoscopic viewer includes left and right lenses and sight blocks, all housed in the lightweight frame. A stereoscopic display, such as a computer monitor or a TV, includes left and right stereoscopic central images that are displayed side-by-side on the central portion of the display screen. The left and right central images have center spacings equivalent to normal interpupillary distances. However, the left central image is extended to the left to form a left peripheral zone and the right central image is extended to the right to form a right peripheral zone. A user employing the viewer integrates the central stereoscopic views with the left and right peripheral zones to form an apparent 3-dimensional image. Additional two-dimensional zones may be established outside of the stereoscopic central images for items such as menus, windows, tool icons, etc.

Claims

1. A stereoscopic display and viewing system comprising:

display means for showing an extended image with a large field-of-view, said extended image having portions comprising;

left and right adjacent stereoscopic central images, said stereoscopic central images having an approximate center to center separation equal to an interpupillary distance, each stereoscopic central image having a width of approximately said interpupillary distance, and

left and right peripheral images that are, respectively, leftward and rightward extensions of said left and right adjacent stereoscopic central images; and

binocular viewing means employable by a user and including right and left lenses for enabling said user to view all of said portions of said extended image on said display means, said viewing means including right and left inner light stops positioned between said lenses for restricting light from said right central image and right peripheral image from entering said left lens, and light from said left central image and left peripheral image from entering said right lens, when said right and left lenses are positioned approximately equidistantly from an imaginary line emanating perpendicularly from said display and originating at a joinder of said left central image and right central image, whereby the user may view all of said portions of said extended image with a stereoscopic effect throughout said large field-of-view.

2. The stereoscopic display and viewing system as recited in claim 1, wherein said viewing means further includes a right outer light stop which prevents light from entering said right lens that originates to the right of said right peripheral image and a left outer light stop which prevents light from entering said left lens that originates to the left of said left peripheral image.

3. The stereoscopic display and viewing system as recited in claim 1 wherein said display means further comprises:

left screen buffer means for storing data defining the left central image and left peripheral image;

right screen buffer means for storing data defining the right screen central image and right peripheral image; and

processor means for updating said left screen buffer means and right screen buffer means in an alternate fashion so as to provide an apparent doubling of the update rate thereof.

4. The stereoscopic display and viewing system as recited in claim 3 wherein said display means is an electronically operated display which requires periodic refresh signals.

5. The stereoscopic display and viewing system as recited in claim 1 wherein said extended image on said display means further comprises an image portion that is viewable only through said left lens when said left and right lenses are positioned for stereoscopic viewing of said stereoscopic central images.

6. The stereoscopic display and viewing system as recited in claim 1 wherein said extended image on said display means further comprises an image portion that is viewable only through said right lens when said left and right lenses are positioned for stereoscopic viewing of said stereoscopic central images.

7. The stereoscopic display and viewing system as recited in claim 1, wherein said right and left peripheral images extend to outer right and left limits of said display means.

8. The stereoscopic display and viewing system as recited in claim 1, wherein said right and left lenses comprise a simple pair of lenses of one of the types including plano-convex, double convex and meniscus lenses.

9. The stereoscopic display and viewing system as recited in claim 1, wherein said right and left lenses comprise a simple pair of lenses having a large effective focal length for allowing increased distance to the display.

10. The stereoscopic display and viewing system as recited in claim 9, wherein said binocular viewing means comprises extended sight block baffles.

11. The stereoscopic display and viewing system as recited in claim 1, wherein said binocular viewing means have the interpupillary eye distances offset from the center of the right and left lenses to increase the side peripheral viewing.