Patent ID: 6392342
Filing Date: 2002-05-21
Classification: G02B,Y10S

Abstract:
A light source arrangement for providing illumination to an essentially planar area in an electronic device, comprisingan essentially planar light guide having an edge; an encapsulated semiconductor light source in the vicinity of said edge of the essentially planar light guide so that light emitted by the encapsulated semiconductor light source is arranged to be coupled into the light guide through said edge; within the encapsulated semiconductor light source a semiconductor chip; and an encapsulation block surrounding said semiconductor chip; wherein said encapsulation block comprises a curved surface that faces the edge of the essentially planar light guide, said encapsulation block has a D-shaped cross section in a plane perpendicular to the plane of the essentially planar lightguide, the arcuate part of the D corresponding to said curved surface, and the form of the encapsulation block is defined by a surface corresponding to a rotation of said D-shaped cross section by 180 degrees around the straight vertical line segment at the left of the D.