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Proceedings Paper

Designing two freeform surfaces with Monge–Ampère equation method for point-like sources
Author(s): Rengmao Wu; Shengqian Chang; Zhanghao Ding; Zhenrong Zheng
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Paper 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.

Paper Details

Date Published: 28 May 2018
PDF: 6 pages
Proc. SPIE 10693, Illumination Optics V, 1069306 (28 May 2018); doi: 10.1117/12.2309752
Show Author Affiliations
Rengmao Wu, Zhejiang Univ. (China)
Shengqian Chang, Zhejiang Univ. (China)
Zhanghao Ding, Zhejiang Univ. (China)
Zhenrong Zheng, Zhejiang Univ. (China)

Published in SPIE Proceedings Vol. 10693:
Illumination Optics V
Tina E. Kidger; Stuart David, Editor(s)

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