Head-up display system including a uniformly reflecting layer an

Details Head-up display system including a uniformly reflecting layer an Head-up display system including a uniformly reflecting layer an

1992-04-23

1994-02-22

Henry, Jon W.

Optical: systems and elements

Single channel simultaneously to or from plural channels

By partial reflection at beam splitting or combining surface

359589, 359583, 428428, 428432, G02B 2714, G02B 528, G02B 110

Patent

active

052893154

ABSTRACT:
The present invention relates to a head-up display system which includes an element thereof. The element is attached to, for example, an automobile windshield so as to project light rays carrying images of display information onto the element from a luminous source in a car. The element includes first and second reflection layers. The first layer is directly attached to the windshield and has a relatively uniform reflectance throughout visible light spectrum. The second layer is directly formed on the first layer and has a selective reflection against incident visible light of wavelengths in the range from about 500 nm to about 600 nm. Thus, the light rays from the luminous source are displayed on the first and second layers in different colors.

REFERENCES:
patent: 2907672 (1959-10-01), Irland et al.
patent: 3899241 (1975-08-01), Malobicky et al.
patent: 4560233 (1985-12-01), Banbury
patent: 5005009 (1991-02-01), Roberts
patent: 5066102 (1991-11-01), Hirano
patent: 5128659 (1992-07-01), Roberts et al.
patent: 5194989 (1993-03-01), Ferrante et al.

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