High reliability, low intensity back lit SR and NVGC indicator a

Details High reliability, low intensity back lit SR and NVGC indicator a High reliability, low intensity back lit SR and NVGC indicator a

1991-07-29

1992-09-22

Pascal, Robert J.

Optical: systems and elements

Glare or unwanted light reduction

359609, 359 39, 359245, 34081532, 362 29, F21V 1300

Patent

active

051502577

ABSTRACT:
An electronic light valve is disposed over a color fill lens formed in an opaque indicia plate and an infrared filter to be energized to a transmissive condition simultaneously with a low intensity light source to illuminate the legend either by ambient light reflecting from the lens or by the light source emitting prescribed energy wavelengths through the lens, whichever thereof having the greater intensity relative to the other. In a deenergized condition of the light source and light valve, the latter blocks ambient light from the legend to prevent viewing thereof.

REFERENCES:
patent: 3708219 (1973-01-01), Forlini et al.
patent: 3743382 (1973-07-01), Rosenberg
patent: 4180847 (1979-12-01), Cresko et al.
patent: 4359618 (1982-11-01), Stevens
patent: 4535396 (1985-08-01), Guthrie
patent: 4722028 (1988-01-01), Brannon et al.
patent: 4829407 (1989-05-01), Bushell et al.
patent: 4947011 (1990-08-01), Muranoi et al.
patent: 4958917 (1990-09-01), Hashimoto et al.
patent: 4997263 (1991-05-01), Cohen et al.
"The Performance of Dichroic Displays for Automotive Instrument Panel Use", SAE Technical Paper Series, Feb. 25-29, 1980.
Aug. 26, 1991 Design News, "Solid-state shutter improves switch display readibility" pp. 42-43.

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