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Head-up display device

  • US 5,210,626 A
  • Filed: 09/21/1990
  • Issued: 05/11/1993
  • Est. Priority Date: 09/27/1989
  • Status: Expired due to Fees
First Claim
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1. A head-up device, comprising:

  • an image generator for emitting light;

    a beam combiner having a first light receiving surface for receiving light from said image generator and diffracting light in an emitting direction toward an observer, wherein said beam combiner is tilted laterally with respect to the emitting direction and extends in a viewing plane not perpendicular to the emitting direction; and

    a compensator having a second light receiving surface for receiving the light generated by said image generator and directing the light to the first light receiving surface of said beam combiner to correct an aberration created by said beam combiner,said compensator being arranged such that a second axis perpendicular to a center of the second light receiving surface and a first axis perpendicular to a center of the first light receiving surface of said beam combiner are substantially in a common plane.

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