Head up display system using a diffusing image plane

Details Head up display system using a diffusing image plane Head up display system using a diffusing image plane

1999-03-11

2000-03-28

Epps, Georgia

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

359631, 362494, G02B 2714, F21V 1302

Patent

active

060439378

ABSTRACT:
A head up display system having a diffusing image plane or diffuser. The light output of a relatively small image source is imaged on the diffuser by way of imaging optics. A mirror is used to image light from the diffuser onto a windshield and correct for distortion caused by the windshield. The diffuser is advantageously used when a large field-of-view is desired, or sun load characteristics need to be addressed. The diffuser may be flat or curved in order to optimize the system for different applications. The magnification of the mirror may be made relatively low, and the solar energy density that is made incident on the image source is reduced, providing for a low cost, high performance, color head up display system.

REFERENCES:
patent: 4835661 (1989-05-01), Fogelberg et al.
patent: 5701132 (1997-12-01), Kollins et al.
patent: 5729242 (1998-03-01), Margerum et al.

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