Display device for use with strong illumination

Details Display device for use with strong illumination Display device for use with strong illumination

1978-08-21

1980-10-14

Hayes, Monroe H.

Illumination

Light source and modifier

Including translucent or transparent modifier

362800, F21V 300

Patent

active

042284902

ABSTRACT:
An electroluminescent device includes at least one emissive diode emitting in the red. The emissive face of the diode is covered by a filter element which is substantially transparent in the red, and which has a light transmission coefficient in the blue which is significantly higher than its coefficient in the yellow and the green. The resulting device exhibits superior contrast in sunlight, and is thus particularly suitable for use in vehicle and aircraft dashboard displays.

REFERENCES:
patent: 3510732 (1970-05-01), Amans
patent: 3860847 (1975-01-01), Carley
patent: 4035681 (1977-07-01), Savage
patent: 4070568 (1978-01-01), Gala

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