1
Ronald T Smith: Dispersion-compensated windshield hologram virtual image display. Hughes Aircraft Company, Leonard A Alkov, Wanda Denson Low, January 1, 1991: US04981332 (42 worldwide citation)

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.


2
Smith Ronald T: Dispersion-compensated windshield hologram virtual image display.. Hughes Aircraft Co, January 2, 1991: EP0405540-A2 (8 worldwide citation)

A virtual image display including an image hologram (15A), a dispersion compensating hologram (13A) for providing playback illumination to the image hologram (15A), and an illumination source (11) for providing playback illumination to the dispersion compensating hologram (13A).


3
Smith Ronald T: Affichage dimages holographiques virtuelles avec correction de la dispersion pour pare-brise, Dispersion-compensated windshield hologram virtual image display. Hughes Electronics Corporation, SIM & MCBURNEY, July 4, 1995: CA2019742

A virtual image display including an image hologram,a dispersion compensating hologram for providing playbackillumination to the image hologram, and an illuminationsource for providing playback illumination to the dis-persion compensating hologram.