Patent ID: 8251529
Filing Date: 2012-08-28
Classification: F21S,F21Y,G02F

Abstract:
1. A thin illumination device comprising: an array of light-emitting diodes interconnected via a electrically conducting pattern; a translucent plate, and a reflector arranged facing a first side of said translucent plate at a predetermined distance from said plate, wherein said array of light emitting diodes is arranged on said first side of said translucent plate to emit light which is substantially directed towards said reflector; said reflector is positioned to reflect light from said light emitting diodes through said translucent plate; said electrically conducting pattern including a translucent electric conducting material; said reflector being substantially parallel to said translucent plate; said translucent plate including a reflecting dot pattern on a second side opposite said first side; said reflecting dot pattern having a relatively high density near said light emitting diodes and a relatively low density remote from said light emitting diodes.