Patent ID: 7404661
Filing Date: 2008-07-29
Classification: A61B,A61M,A61N,F21V,G02B,H01H,Y10S

Abstract:
1. A light emitting panel assembly comprising a light guide having a greater cross-sectional width and length than thickness and at least one input edge for receiving light from a light source, and a pattern of individual deformities of well defined shape that are projections or depressions on or in at least one side of the light guide for producing a desired light output from the light guide, the deformities being quite small in relation to the width and length of the light guide, at least some of the deformities having two or more surfaces that come together to form ridges having opposite end points, at least some of the ridges being non-linear over a majority of their length and being in spaced relation from the one side of the light guide at least between the end points, each of the ridges having a total length that is quite small in relation to the width and length of the light guide, the opposite end points of at least some of the ridges intersecting the light guide or other deformities where the ridges end.