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Multiple intensity distributions from a single optical element

: Berens, M.; Bruneton, A.; Bäuerle, A.; Traub, M.; Wester, R.; Stollenwerk, J.; Loosen, P.


Winston, R.:
Nonimaging Optics: Efficient Design for Illumination and Solar Concentration X. Proceedings : August 25, 2013, San Diego, California, United States
Bellingham, WA: SPIE, 2013 (SPIE Proceedings 8834)
ISBN: 0-8194-9684-7
ISBN: 978-0-8194-9684-3
Paper 88340M, 7 S.
Conference "Nonimaging Optics - Efficient Design for Illumination and Solar Concentration" <10, 2013, San Diego/Calif.>
Fraunhofer ILT ()

We report on an extension of the previously published two-step freeform optics tailoring algorithm using a Monge-Kantorovich mass transportation framework. The algorithm's ability to design multiple freeform surfaces allows for the inclusion of multiple distinct light paths and hence the implementation of multiple lighting functions in a single optical element. We demonstrate the procedure in the context of automotive lighting, in which a fog lamp and a daytime running lamp are integrated in a single optical element illuminated by two distinct groups of LEDs.