A detailed study on the requirements for angular homogeneity of phosphor converted high power white LED light sources

被引：82

作者：

Sommer, Christian ^{[1
]}

Hartmann, Paul ^{[2
]}

Pachler, Peter ^{[2
]}

Schweighart, Marko ^{[2
]}

Tasch, Stefan ^{[2
]}

Leising, Guenther ^{[3
]}

Wenzl, Franz P. ^{[1
]}

机构：

[1] Joanneum Res Forschungsges mbH, Inst Nanostruct Mat & Photon, A-8160 Weiz, Austria

[2] TridonicAtco Optoelect GmbH, A-8380 Jennersdorf, Austria

[3] Graz Univ Technol, Inst Solid State Phys, A-8010 Graz, Austria

来源：

OPTICAL MATERIALS | 2009年 / 31卷 / 06期

关键词：

EMITTING-DIODES; EFFICIENCY; SCATTERING;

D O I：

10.1016/j.optmat.2008.09.009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a simulation procedure based on optical ray-tracing in order to optimize the angular homogeneity of the light emitted from the color conversion element (CCE) in a phosphor conversion-based white LED. The blue LED and the yellow CCE light have rather different emission characteristics; so the geometry of the CCE as well as its phosphor concentration have to be carefully adjusted in order to achieve equal irradiance and/or radiant intensity distributions on a photo-detector surrounding the LED. The simulations identify the optimal CCE geometries and material compositions in order to obtain angular homogeneity for a broad range of color temperatures. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：837 / 848

页数：12

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