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Design of efficient freeform lenses for mass-market illumination applications using hybrid algorithms

: Bäuerle, A.; Wester, R.; Schnitzler, C.; Loosen, P.

Preprint urn:nbn:de:0011-n-1474148 (1.8 MByte PDF)
MD5 Fingerprint: 8910c0a934d978276616b91e5eb57476
Copyright 2010 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Erstellt am: 8.12.2010

Krevor, D.H. ; Society of Photo-Optical Instrumentation Engineers -SPIE-, Bellingham/Wash.:
Polymer optics design, fabrication, and materials : 1 - 2 August 2010, San Diego, California, United States; Proceedings represent the Second Symposium on Polymer Optics
Bellingham, WA: SPIE, 2010 (Proceedings of SPIE 7788)
ISBN: 978-0-8194-8284-6
Paper 778807
Symposium on Polymer Optics <2, 2010, San Diego/Calif.>
Konferenzbeitrag, Elektronische Publikation
Fraunhofer ILT ()

We report on the development and experimental analysis of novel freeform polymer lenses for the uniform illumination of a target area using high-brightness LED. In a first step, the LED module was centered over the illuminated area and the two faces of a freeform lens were designed for homogeneous and efficient light distribution. In a second step, the system was extended for an off-axis target, the overall size was reduced and structures for automated alignment with respect to the LED were included. Photometric analyses were used for each system and were found to be in good agreement with simulations.