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Optical Design of a White LED Performing High Spatial Color Uniformity

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Abstract

In this paper, a precise simulation and detailed design of angular correlated color temperature (CCT) distribution of white LEDs covering a range of CCT from 2800K to 6500K is presented. In our best knowledge, it is the first time which the kind of research is presented. Besides, for a white LED with the CCT near 6500K, an optimum design of packaging structure with a silicone lens covering a phosphor dome performed an extreme small angular CCT deviation of 105K and 182K in simulation and the corresponding experiment respectively.

© 2013 Optical Society of America

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