Patent ID: 6100952
Filing Date: 2000-08-08
Classification: G02F,Y10S

Abstract:
In a night vision goggle (NVG) compatible backlit display that includes a display element, a light source, and illumination optics located between the light source and the display element, the improvement comprising:said illumination optics including a total internal reflective (TIR) with an embedded diffuser doped with an infrared (IR) absorbing dye disposed between the light source and the display for collecting and diffusing light produced by the light source, wherein said IR dye doped TIR with an embedded diffuser is an IR dye doped ridged prismatic TIR with embedded diffuser layer and, wherein said illumination optics also include a ridged prismatic TIR without embedded diffuser layer oriented orthogonal to said IR dye doped ridged prismatic TIR with embedded diffuser layer.