Edge-lit optical system having optical elements on two surfaces

Details Edge-lit optical system having optical elements on two surfaces Edge-lit optical system having optical elements on two surfaces

2009-02-03

2010-10-12

Negron, Ismael (Department: 2885)

Illumination

Edge lighted panel

Light guide

C362S622000, C362S624000, C362S626000, C362S627000, C362S561000, C349S065000

Reexamination Certificate

active

07810982

ABSTRACT:
Optical assembly includes a light source adjacent a light input edge and generally parallel and planar first and second surfaces each comprising respective patterns of well defined optical elements that are quite small in relation to the length and width of the optical assembly. At least some of the optical elements of each pattern include a respective sloped surface for directing at least some light emitted from the light source. The respective slope angle of the sloped surface of at least some of the optical elements of one of the patterns is different from the respective slope angle of the sloped surface of at least some of the optical elements of the other pattern such that more of the light is emitted from one of the surfaces than is emitted from the other surface.

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