Precise spatial-color optical modeling in phosphor-converted white LEDs

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題名:	Precise spatial-color optical modeling in phosphor-converted white LEDs
作者:	孫慶成;Sun, Ching-Cherng;Chang, Yu-Yu;Wang, Yu-Huan;Chen, Ching-Yi;Lo, Yi-Chien;Cheng, Han-Hsiang
貢獻者:	理學院光電科學與工程學系
關鍵詞:	Color;Fluorescent and luminescent materials;Lenses;Light emitting diodes;Lighting;Optimized production technology;Phosphors;Sun;wavelength conversion devices
日期:	2015-03-01
上傳時間:	2026-04-23 11:42:25 (UTC+8)
出版者:	IEEE Computer Society;IEEE
摘要:	摘要： White light LEDs are playing a more and more important role in display in various structures. Here, a new modeling algorithm is proposed for use in phosphor-converted white light-emitting diodes (pcW-LEDs); the algorithm can be used to accurately simulate color appearances, potentially enabling optical designers to remove yellowish/bluish spots in LED lighting. The proposed modeling method was applied to simulate a pcW-LED without an encapsulation lens, and subsequently, a pcW-LED with a hemispherical lens. Both simulations accurately predicted the blue and yellow light distribution. The model was further verified by applying a total internal reflector lens to the pcW-LED. In the midfield region, the blue and yellow light distribution exhibited large variations as the observation distance changed; this varying light pattern for both the blue and yellow lights can be accurately predicted using the proposed model. The developed optical model should facilitate designing a pcW-LED that features high-quality illumination and increased color uniformity. 其他題名： JDT 出版者： IEEE 出版日期： 2015-03 出處： Journal of display technology, 2015-03, Vol.11 (3), p.261-265 資源來源： IEEE Xplore 識別號： ISSN: 1551-319X 識別號： EISSN: 1558-9323 識別號： DOI: 10.1109/JDT.2014.2381268 識別號： CODEN: IJDTAL
顯示於類別:	[光電科學與工程學系] 期刊論文

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