Elevated back-lit display

Details Elevated back-lit display Elevated back-lit display

G - Physics

09

F

40/55

G09F 13/04 (2006.01) F21V 8/00 (2006.01) G09F 13/18 (2006.01)

Patent

CA 1310829

ABSTRACT OF THE DISCLOSURE An elevated back-lit display providing easy replacement of light sources and great uniformity of light distribution. A light source in a support column emits light into a light conduit also in the support column. light is conducted through the light conduit to an optical cavity with an optical window. Light entering the optical cavity from the light conduit is dispersed throughout the optical cavity by a beam spreader. Total internal reflection film in said optical window helps to improve the uniformity of light distribution in the optical cavity.

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