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Compact compound magnified virtual image display with a reflective/transmissive optic

  • US 5,991,084 A
  • Filed: 02/04/1998
  • Issued: 11/23/1999
  • Est. Priority Date: 02/04/1998
  • Status: Expired due to Term
First Claim
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1. A compact virtual image display system comprising:

  • a microdisplay for forming a source object;

    a first magnification optic positioned such that light forming the source object enters the first magnification optic, the optic includinga reflective/transmissive surface positioned such that light forming the source object travels within the first magnification optic to the reflective/transmissive surface where the source object is reflected by the reflective/transmissive surface, at least a portion of the reflected source object being totally internally reflected, anda reflective first magnification element surface positioned such that the reflected source object is magnified and reflected back to the reflective/transmissive surface as a magnified virtual image and transmitted though the reflective/transmissive surface;

    anda second magnification optic positioned relative to the first magnification optic to magnify the magnified virtual image.

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