24 October 2017 Direct design of achromatic lens for Lambertian sources in collimating illumination
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Proceedings Volume 10459, AOPC 2017: Optical Storage and Display Technology; 104590U (2017) https://doi.org/10.1117/12.2284975
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China
Abstract
Illumination design used to redistribute the spatial energy distribution of light source is a key technique in lighting applications. However, there is still no effective illumination design method for the removing of the chromatic dispersion. What we present here is an achromatic lens design to enhance the efficiency and uniform illumination of white light-emitting diode (LED) with diffractive optical element (DOE). We employ the chromatic aberration value (deg) to measure the degree of chromatic dispersion in illumination systems. Monte Carlo ray tracing simulation results indicate that the chromatic dispersion of the modified achromatic collimator significantly decreases from 0.5 to 0.1 with LED chip size of 1.0mm×1.0mm and simulation efficiency of 90.73%, compared with the traditional collimator. Moreover, with different corrected wavelengths we compared different chromatic aberration values that followed with the changing pupil percent. The achromatic collimator provided an effective way to achieve white LED with low chromatic dispersion at high efficiency and uniform illumination.
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Peng Yin, Xiping Xu, Zhaoguo Jiang, Hongshu Wang, "Direct design of achromatic lens for Lambertian sources in collimating illumination", Proc. SPIE 10459, AOPC 2017: Optical Storage and Display Technology, 104590U (24 October 2017); doi: 10.1117/12.2284975; https://doi.org/10.1117/12.2284975
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