Patent ID: 7576478
Filing Date: 2009-08-18
Classification: C09K,F21V,F21Y,G02F,H01L

Abstract:
1. A color conversion cell for adjusting a color or color temperature of light from a light source having a first emission spectrum, the color conversion cell comprising a color converting substance in a matrix held between two electrodes, the color converting substance having a second emission spectrum different from the first emission spectrum, and a switchable reflector positioned behind the color converting substance such that the color converting substance is between the reflector and the light source, forming a switchable resonance structure for the first emission spectrum; the color conversion cell being shiftable between at least a first state wherein the reflector will at least substantially reflect source light incident on the cell, and the color converting substance will a second state wherein the reflector will at least substantially transmit source light incident on the cell, and the first ratio, A