Patent ID: 8129735

Claim:
An apparatus comprising: a light source comprising: a light emitting diode; a wavelength converting element disposed over the light emitting diode, the wavelength converting element having a height and a width, wherein the ratio of height and width is selected to produce light with a desired non-uniform angular color distribution of Δu′v′>0.015 over a particular angle, such that the light is more bluish at a viewing angle of 0°than at a wider viewing angle; and a light receiving device coupled to receive light from the wavelength converting element, the light receiving device having non-uniform color absorption characteristics that at least partially compensate for the non-uniform angular color distribution of the wavelength converting element to create an angular color uniformity at an output of the light receiving device of Δu′v′<0.01 over the particular angle, wherein the light receiving device exhibits a percentage of absorption of blue light that is higher than a percentage of absorption of longer wavelength visible light.