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Optimizing double freeform surfaces for reducing deviations in ray-mapping method
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Paper Abstract

Ray mapping method can greatly simplify the freeform illumination lens design. However, the result obtained by the ray mapping method sometimes deviates much from the design target. Therefore, we present a construction of double freeform surfaces based on nonlinear least squares and non-uniform rational B-spline surfaces (NURBS) to minimize the deviations. By this way, we can get a smooth double-freeform-surface lens with good optical performance.

Paper Details

Date Published: 5 November 2018
PDF: 7 pages
Proc. SPIE 10815, Optical Design and Testing VIII, 108151B (5 November 2018); doi: 10.1117/12.2501083
Show Author Affiliations
Haotian Xu, Beijing Institute of Technology (China)
Zexin Feng, Beijing Institute of Technology (China)
Dewen Cheng, Beijing Institute of Technology (China)
Yongtian Wang, Beijing Institute of Technology (China)


Published in SPIE Proceedings Vol. 10815:
Optical Design and Testing VIII
Yongtian Wang; Tina E. Kidger; Kimio Tatsuno, Editor(s)

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