Backlight for liquid crystal devices

Details Backlight for liquid crystal devices Backlight for liquid crystal devices

G - Physics

02

F

G02F 1/133 (2006.01) F21V 8/00 (2006.01) G02F 1/13357 (2006.01) G09F 9/35 (2006.01) G09G 3/34 (2006.01) F21S 5/00 (1990.01)

Patent

CA 2073405

A backlight system for liquid crystal device display is equipped with a dual lighting system for day viewing and compatible with night vision systems. The day lighting system uses conventional fluorescent or incandescent lamps for full color display during daytime use. The night lighting system uses a light source which is either filtered to remove infrared and near infrared wavelengths or which is chosen from a class of sources which does not emit such wavelengths. The day lighting system is disabled while the night system is in use.

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