Patent ID: 8016473
Filing Date: 2011-09-13
Classification: G02B

Abstract:
1. A device for diffusing light, comprising: a light guide, light input means, and light output means, said light input and light output means being connected to said light guide, said device being arranged to enable light of at least two separate frequencies from a light source to enter said light guide through said light input means, propagate through said light guide and exit at said light output means, wherein said light guide is circumferentially arranged in a closed loop for enabling said light from said light source to propagate along a circumferential path inside of said light guide before exiting at said output means, such that said light is able to propagate for a distance greater than the external dimensions of said light guide before reaching said output means thereby producing a mix of the light from said at least two frequencies, wherein said light input means comprises a first section of said light guide, and said light output means comprises a second section of said light guide, and wherein said light output means are integrated with said second section and comprise a light out coupling structure for improving directionality of the outgoing light.