04981332 is referenced by 42 patents and cites 6 patents.

A virtual image display including an image hologram, a dispersion compensating hologram for providing playback illumination to the image hologram, and an illumination source for providing playback illumination to the dispersion compensating hologram.

Title
Dispersion-compensated windshield hologram virtual image display
Application Number
7/373962
Publication Number
4981332
Application Date
June 29, 1989
Publication Date
January 1, 1991
Inventor
Ronald T Smith
Redondo Beach
CA, US
Agent
Wanda Denson Low
Leonard A Alkov
Assignee
Hughes Aircraft Company
CA, US
IPC
G03H 1/22
G03H 1/02
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