Patent ID: 8104944
Filing Date: 2012-01-31
Classification: A61B,G02B,G09F,H01H,Y10S

Abstract:
1. An optical assembly comprising light sources and a light emitting panel member, the light emitting panel member comprising: opposite sides, one of the sides comprising a light emitting surface area; an input edge for receiving light from the light sources, each of the light sources being optically coupled to a different location along the input edge; and a pattern of individual optical deformities on or in at least one of the sides of the panel member for producing a light output distribution from the light emitting surface area, the individual optical deformities being varied throughout the pattern and being shaped or oriented throughout the pattern preferentially to extract light propagating through the panel member in one direction over another direction to cause regions of high light intensity and low light intensity in the light output distribution from the light emitting surface area.