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Two-page automotive virtual image display

  • US 5,121,099 A
  • Filed: 10/23/1990
  • Issued: 06/09/1992
  • Est. Priority Date: 08/31/1990
  • Status: Expired due to Term
First Claim
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1. A virtual image display for a vehicle, comprising:

  • a first image source including a plurality of electromechanical vehicle instrument gauges for providing electromechanical gauge imaging illumination;

    a second image source including an alphanumeric display for providing alphanumeric imaging illumination;

    a combiner for combining said electromechanical gauge imaging illumination and said alphanumeric imaging illumination to provide combiner imaging illumination;

    a negative power aspheric mirror off-axis with respect to the image sources responsive to said combiner imaging illumination for providing diverging imaging illumination; and

    positive power aspheric mirror responsive to said diverging imaging illumination for providing converging imaging illumination that produces a virtual image of said plurality of electromechanical gauges and said alphanumeric display observable by the operator of the vehicle;

    said aspheric mirrors being off-axis with respect to the image sources whereby the image sources and the virtual image do not lie on the optical axes of the aspheric mirrors and being aspherically deformed to reduce distortions including distortions produced by their off-axis configurations.

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