Designing two freeform surfaces with Monge–Ampère equation method for point-like sources

Rengmao Wu; Shengqian Chang; Zhanghao Ding; Zhenrong Zheng

doi:10.1117/12.2309752

28 May 2018 Designing two freeform surfaces with Monge–Ampère equation method for point-like sources

Rengmao Wu, Shengqian Chang, Zhanghao Ding, Zhenrong Zheng

Proceedings Volume 10693, Illumination Optics V; 1069306 (2018) https://doi.org/10.1117/12.2309752
Event: SPIE Optical Systems Design, 2018, Frankfurt, Germany

Abstract

Two freeform surfaces provide more degrees of freedom in designing illumination optics and can yield a better solution. The existing methods for point-like sources are mostly valid in designing one freeform surface. Designing two freeform surfaces for point-like sources still remains a challenging issue. In this letter we develop a general formulation of designing two freeform lens surfaces for point-like sources. The proposed method is very robust in designing freeform lenses with two elaborately designed surfaces. The examples clearly show that using two freeform surfaces yields better solutions to challenging illumination problems with ultra-high energy efficiency.

Citation Download Citation

Rengmao Wu, Shengqian Chang, Zhanghao Ding, and Zhenrong Zheng "Designing two freeform surfaces with Monge–Ampère equation method for point-like sources", Proc. SPIE 10693, Illumination Optics V, 1069306 (28 May 2018); https://doi.org/10.1117/12.2309752

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