1984-02-03
1987-06-02
Arnold, Bruce Y.
350372, 350174, G02B 532, G02B 2714
Patent
active
046698108
ABSTRACT:
A head up display includes a simplified holographic combiner which has a low surface spatial frequency for avoiding flare. Symbology generated by a cathode-ray-tube is focused by relay optics and then reflected by a holographic optical element toward the holographic combiner. The last mentioned holographic optical element is provided with optical power in part compensating for distortions attributable to the large off-axis angle at which the holographic combiner is operated.
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Arnold Bruce Y.
Flight Dynamics, Inc.
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