NVG-compatible AMLCD backlight having a ridged prismatic TIR wit

Liquid crystal cells – elements and systems – Particular structure – Particular illumination

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Details

349 64, 362339, 385901, G02F 11335, F21V 502

Patent

active

061009520

ABSTRACT:
An improved night vision goggle (NVG) compatible backlight for a liquid crystal display (LCD) and active matrix liquid crystal display (AMLCD) and other types of backlit displays is disclosed. The backlight includes a ridged prismatic TIR with an embedded diffuser layer doped with an infrared (IR) absorbing dye (57), a ridged prismatic TIR without diffuser layer (59) an infrared rejecting filter layer (63), and either a holographic diffuser layer or a lenticular lens array layer (65), or a fresnel wedge layer (67).

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