Simple function for intensity distribution from LEDs

Ivan Moreno, Chang Yu Tsai, David Bermúdez, Ching Cherng Sun

研究成果: 書貢獻/報告類型會議論文篇章同行評審

15 引文 斯高帕斯(Scopus)


Since its beginnings, light-emitting diode (LED) has progressed toward greater performance. Today, LEDs are everywhere, in many shapes, and with a wide range of radiation patterns. We propose a general analytic representation for the angular intensity distribution of the light emitted from an LED. The radiation pattern equation is determined by adding a Gaussian or a power cosine expression for contributions from the emitting surfaces (chip, chip arrays, or for some cases a phosphor surface), and the light redirected by the reflecting cup and the encapsulating lens. Mathematically, the pattern is described as a sum of Gaussian or of cosine-power functions. The resulting equation is widely applicable for any kind of LED of practical interest. We successfully model the radiation patterns from several manufacturer datasheets.

主出版物標題Nonimaging Optics and Efficient Illumination Systems IV
出版狀態已出版 - 2007
事件Nonimaging Optics and Efficient Illumination Systems IV - San Diego, CA, United States
持續時間: 26 8月 200727 8月 2007


名字Proceedings of SPIE - The International Society for Optical Engineering


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國家/地區United States
城市San Diego, CA


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