High uniformity in angular correlated-colortemperature distribution of white LEDs from 2800K to 6500K

Ching Cherng Sun, Ching Yi Chen, Cheng Chien Chen, Chih Yu Chiu, Yi Ning Peng, Yu Huan Wang, Tsung Hsun Yang, Te Yuan Chung, Cheng Yang Chung

Research output: Contribution to journalArticlepeer-review

82 Scopus citations

Abstract

In this paper, to our best knowledge, it is the first time to present 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. An optimized design of packaging structure with a silicone lens covering a phosphor dome performed an extreme small angular CCT deviation of 105K in the simulation and 182K in a corresponding real sample for a white LED with the CCT near 6500K.

Original languageEnglish
Pages (from-to)6622-6630
Number of pages9
JournalOptics Express
Volume20
Issue number6
DOIs
StatePublished - 12 Mar 2012

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