Dr. Peng Yin Profile

Dr. Peng Yin

at Changchun Univ of Science and Technology

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Proceedings Article | 24 October 2017 Paper

Direct design of achromatic lens for Lambertian sources in collimating illumination

Peng Yin, Xiping Xu, Zhaoguo Jiang, Hongshu Wang

Proceedings Volume 10459, 104590U (2017) https://doi.org/10.1117/12.2284975

KEYWORDS: Lens design, Optical design, Nonimaging optics

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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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