Patent ID: 6129439
Filing Date: 2000-10-10
Classification: F21V,F21Y,G02B,G02F

Abstract:
An illumination assembly comprising:(a) a light transmitting means having light accepting means;(b) a reflecting means attached to the light transmitting means, the reflecting means comprising an array of microprisms, each microprism having:(i) a light input surface optically coupled to a surface of said light transmitting means;(ii) a light output surface distal from said light input surface and having a surface area at least equal to a surface area of said light input surface; and(iii) a first pair of oppositely disposed sidewalls disposed between and contiguous with said light input surface and said light output surface and at least one of said sidewalls forms a first tilt angle with respect to the normal of said light input surface and further comprises at least two faces;wherein light reflecting through said light transmitting means enters said microprisms through said light input surface, the light is redirected by at least one sidewall and the light emerges through said light output surfaces.