Optical design of adjustable light emitting diode for different lighting requirements  

作　　者：芦佳宁 余杰 童玉珍 张国义 

机构地区：[1]Research Center for Wide Gap Semiconductor,Peking University

出　　处：《Chinese Physics B》2012年第12期436-439,共4页中国物理B（英文版）

基　　金：Project supported by the State Key Development Program for Basic Research of China(Grant No.2011CB013101)

摘　　要：Light emitting diode （LED） sources have been widely used for illumination. Optical design, especially freedom compact lens design is necessary to make LED sources applied in lighting industry, such as large-range interior lighting and small-range condensed lighting. For different lighting requirements, the size of target planes should be variable. In our paper we provide a method to design freedom lens according to the energy conservation law and Snell law through establishing energy mapping between the luminous flux emitted by a Lambertian LED source and a certain area of the target plane. The algorithm of our design can easily change the radius of each circular target plane, which makes the size of the target plane adjustable. Ray-tracing software Tracepro is used to validate the illuminance maps and polar-distribution maps. We design lenses for different sizes of target planes to meet specific lighting requirements.Light emitting diode （LED） sources have been widely used for illumination. Optical design, especially freedom compact lens design is necessary to make LED sources applied in lighting industry, such as large-range interior lighting and small-range condensed lighting. For different lighting requirements, the size of target planes should be variable. In our paper we provide a method to design freedom lens according to the energy conservation law and Snell law through establishing energy mapping between the luminous flux emitted by a Lambertian LED source and a certain area of the target plane. The algorithm of our design can easily change the radius of each circular target plane, which makes the size of the target plane adjustable. Ray-tracing software Tracepro is used to validate the illuminance maps and polar-distribution maps. We design lenses for different sizes of target planes to meet specific lighting requirements.

关 键 词：LED optical design freedom compact lens energy mapping ADJUSTABLE TRACEPRO 

分 类 号：TN312.8[电子电信—物理电子学]