Patent ID: 9551669
Date: 2017-01-24
CPC Classifications: G01J,G01N,G01R

Claim:
1. A method of characterizing a solid state light emitting device, comprising: exciting a first light emitting region of the solid state light emitting device; exciting a second light emitting region of the solid state light emitting device; collecting photons emitted by the first and second light emitting regions; obtaining a first spectral power distribution of the photons emitted by the first light emitting region; obtaining a second spectral power distribution of the photons emitted by the second light emitting region; obtaining, using a processor, at least one color parameter for the first spectral power distribution and at least one color parameter for the second spectral power distribution by fitting one or more Gaussian functions to the first and second spectral power distributions; and spatially correlating a physical property of the first and second light emitting regions based on the at least one color parameter for the first spectral power distribution and the at least one color parameter for the second spectral power distribution.