11 October 2012 Irradiance tailoring with two-sided Fresnel-type freeform optics
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Abstract
Based on the Monge-Kantorovich theory of optimal mass transport, the computation of a ray mapping between source and target irradiances is used to design two-sided freeform lenses fulfilling the constraints of an automotive application: compactness and sharp bright-dark cutoff. A generic segmentation technic resulting in Fresnel-type optics is presented and the whole procedure is illustrated with the design of a fog light lens. Finally Monte Carlo simulation of the virtual model and measurements of a polycarbonate prototype are presented.
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Adrien Bruneton, Axel Bäuerle, Martin Traub, Rolf Wester, Peter Loosen, "Irradiance tailoring with two-sided Fresnel-type freeform optics", Proc. SPIE 8485, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration IX, 84850H (11 October 2012); doi: 10.1117/12.929801; https://doi.org/10.1117/12.929801
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