Freeform LED lens for uniform illumination

Optics Express
Yi DingPei-fu Gu

Abstract

Light flux from LED must be redistributed to meet the needs of lighting in most cases, a new method is proposed for its secondary optic design. Based on refractive equation and energy conservation, a set of first-order partial differential equations which represent the characters of LED source and desired illumination were presented. The freeform lens was constructed by solving these equations numerically. The numerical results showed that we can get a freeform lens for the illumination of uniformity near to 90%, with considerable high computation speed. This method can shorten the designing time of the freeform lens with high accepted tolerance.

References

Mar 6, 2002·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Harald Ries, Julius Muschaweck

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Citations

Jun 25, 2016·Nature Communications·Timo GissiblHarald Giessen
Apr 26, 2017·Optics Express·Caleb Gannon, Rongguang Liang
Aug 6, 2009·Optics Express·Ching-Cherng SunYi-Chien Lo
Jan 7, 2010·Optics Express·Jae Young JooSun-Kyu Lee
Apr 15, 2010·Optics Express·Florian R FournierJannick P Rolland
May 23, 2013·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Chung-Yu Tsai
Nov 18, 2014·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Jun ZhuGuofan Jin
May 3, 2011·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Shuang ZhaoSheng Liu
Apr 5, 2012·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Ku Chin Lin
May 9, 2012·Optics Express·Jin-Jia ChenChin-Tang Lin
Jul 1, 2014·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Chen Chen, Xiaohui Zhang
Mar 7, 2016·Optics Express·Chelo FerreiraEster Pérez Sinusía
Nov 22, 2018·Applied Optics·Caleb Gannon, Rongguang Liang
Mar 16, 2019·Applied Optics·Jingkun Zhou, Keyuan Qian
Jul 23, 2013·Applied Optics·Chi-Chang HsiehChih-Ching Hung
Apr 1, 2011·Optics Express·Jianfei DongGuoqi Zhang
May 15, 2013·Applied Optics·Leonid L DoskolovichMikhail A Moiseev

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