The design and fabrication of freeform lenses for generating complex illumination patterns on curved surfaces

YuPeng Zhang; Xianglong Mao; Yongjun Xie; Jinpeng Li; Fengbiao Wang; Rong Gao

doi:10.1117/12.2586416

15 January 2021 The design and fabrication of freeform lenses for generating complex illumination patterns on curved surfaces

YuPeng Zhang, Xianglong Mao, Yongjun Xie, Jinpeng Li, Fengbiao Wang, Rong Gao

Author Affiliations +

Proceedings Volume 11761, Fourth International Conference on Photonics and Optical Engineering; 1176120 (2021) https://doi.org/10.1117/12.2586416
Event: Fourth International Conference on Photonics and Optical Engineering, 2020, Xi'an, China

Abstract

Freeform optics have been found in a variety of beam shaping designs. However, they are typically used to form prescribed illumination patterns on a planar surface. In this paper, we will demonstrate a ray mapping based method to design smooth freeform lenses to form complicated illumination distributions on curved surfaces. The ray mapping between the source and target is established by solving an optimal mass transportation problem which is governed by the Monge-Ampére partial differential equation. Then, the freeform lens is constructed by a geometric method based on the optimal ray mapping. Finally, the performance of the lens is verified by Monte Carlo ray tracing simulation in Zemax OpticStudio software. To show the effectiveness of the proposed method, several freeform lenses are designed as examples for a collimated light source to generate different illumination patterns on different curved surfaces. A freeform lens is also fabricated and experimented.

Citation Download Citation

YuPeng Zhang, Xianglong Mao, Yongjun Xie, Jinpeng Li, Fengbiao Wang, and Rong Gao "The design and fabrication of freeform lenses for generating complex illumination patterns on curved surfaces", Proc. SPIE 11761, Fourth International Conference on Photonics and Optical Engineering, 1176120 (15 January 2021); https://doi.org/10.1117/12.2586416

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