Holographic head up display

Details Holographic head up display Holographic head up display

1997-01-17

1999-06-29

Hofsass, Jeffery A.

Computer graphics processing and selective visual display system

Image superposition by optical means

345 8, 359 13, 359 15, 359 20, 340980, G09G 500

Patent

active

059174595

ABSTRACT:
A color holographic head up display which can be mounted on, for example, an airplane or automobile for projecting a color image displayed on a screen. The color holographic head up display in accordance with the present invention comprises an information display comprising a 2-dimensional array of pixels for displaying information to be projected, a relay optical system for relaying an image displayed on the information display, and a holographic combiner having holographic optical elements whose number is the same as the number of the pixels of the information display for delivering the image from the relay optical system to the viewing zone of the human eye, the holographic optical elements being arranged to correspond to the pixels of the information display. According to the present invention, the surrounding scenery and navigation information of a color image are simultaneously projected without noise due to intermodulation, and a high diffraction efficiency can be achieved.

REFERENCES:
patent: 4763990 (1988-08-01), Wood
patent: 5037166 (1991-08-01), Malcolm et al.
patent: 5526145 (1996-06-01), Weber
patent: 5589956 (1996-12-01), Morishima et al.

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