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Density estimation in optical phase space for optimizing micro-optical elements on freeform surfaces

: Berens, M.; Völl, A.; Wester, R.; Stollenwerk, J.; Loosen, P.

	Smith, D.G. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.: Computational Optics II : 15-17 May 2018, Frankfurt, Germany Bellingham, WA: SPIE, 2018 (Proceedings of SPIE 10694) ISBN: 978-1-5106-1925-8 ISBN: 978-1-5106-1926-5 Paper 106940N, 8 pp.
	Conference "Computational Optics" <2, 2018, Frankfurt>

	English
	Conference Paper
	Fraunhofer ILT ()

Abstract
further shape or diffuse the light distribution (e.g. in non-imaging luminaires or automotive headlights). While the geometry can be described in a parametric form by mapping the micro-optical features onto an underlying smooth freeform surface, ray-tracing an optical system composed of NURBS or polynomial B-spline surfaces for each optimization step can be costly.

: http://publica.fraunhofer.de/documents/N-507358.html