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Proceedings Paper

Scaling of the LED collimators with folded multiple reflections
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Paper Abstract

We investigate the parametrical scaling of LED collimators with folded multiple reflections, described by rational Bezier spline. One can scale the collimator linearly with source size (maintaining residual divergence). Scaling factor should be calculated from etendue conservation if one needs to scale the collimator for a different residual divergence. Both up- and downscaling the collimator (reducing the collimator diameter to obtain the design with larger divergence and vice versa) are considered. Concentrator shape cannot be linearly scaled if we change the material (for example polycarbonate is used in design instead of PMMA). Method allows rapid development of collimating optics.

Paper Details

Date Published: 2 September 2008
PDF: 8 pages
Proc. SPIE 7059, Nonimaging Optics and Efficient Illumination Systems V, 70590C (2 September 2008); doi: 10.1117/12.794188
Show Author Affiliations
Sergey Kudaev, Fraunhofer Institute for Applied Optics and Precision Engineering (Germany)
Peter Schreiber, Fraunhofer Institute for Applied Optics and Precision Engineering (Germany)


Published in SPIE Proceedings Vol. 7059:
Nonimaging Optics and Efficient Illumination Systems V
Roland Winston; R. John Koshel, Editor(s)

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