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Head-up display independent test site

  • US 4,647,967 A
  • Filed: 01/28/1986
  • Issued: 03/03/1987
  • Est. Priority Date: 01/28/1986
  • Status: Expired due to Fees
First Claim
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1. In a pilot'"'"'s head-up display having a frame which carries a combiner and projector means for projecting a test image on the combiner, an independent test sight, comprising:

  • (a) a source of light; and

    (b) target means, carried by the frame, for projecting said source of light in the form of a target image in the field of view of the pilot which, in the event that the projector means is properly aligned relative to the frame, essentially coincides with the test image as seen by an eye of the pilot.

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