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PANORAMIC INFINITY IMAGE DISPLAY

  • US 3,785,715 A
  • Filed: 05/17/1972
  • Issued: 01/15/1974
  • Est. Priority Date: 05/17/1972
  • Status: Expired due to Term
First Claim
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1. Visual display apparatus to present to an observer a large horizontal field of view comprising:

  • a. at least one first spherical mirror shaped as at least a portion of the zone of a sphere arranged around the observer;

    b. a first plurality of abutting plane beamsplitters interposed between the observer and said spherical mirror arranged to reflect an image from above said spherical mirror onto said mirror, each of said plurality of beamsplitters cut so that their abutting edges fall in a plane passing through the center of curvature of the spherical mirror and a line of longitude thereon;

    c. a second similar spherical mirror placed above said first spherical mirror;

    d. a second equal plurality of plane beamsplitters arranged above corresponding ones of said first plurality to direct an image from said second spherical mirror to said first plurality of beamsplitters, the relative positioning of said second plurality and said second spherical mirror being such that the reflected center of curvature of said first spherical mirror and the reflected center of curvature of said second spherical mirror coincide, and;

    e. an image source providing an input to said second spherical mirror, said image source positioned so as to form, after being reflected, a virtual image at one-half the radius of said first spherical mirror.

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