17 September 2008 Fractional optimization of illumination optics
Author Affiliations +
Abstract
In order to bound yet keep realistic optical shapes for freeform illumination optics, fractional optimization is employed. By allowing the shape variables to freely vary, optimization leads to bizarre shapes that cannot be manufactured. Therefore, fractional shape variables that are referenced to other system variables are set. Optimization of the pseudo-collimation of an LED using a hybrid optic is presented. The shape of the hybrid optic is described by non-uniform rational B-splines (NURBS). Two examples of this system are optimized: maximum transfer efficiency into an intensity distribution of ±10° and maximum transfer and uniformity over this same angular range.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
R. John Koshel, "Fractional optimization of illumination optics", Proc. SPIE 7061, Novel Optical Systems Design and Optimization XI, 70610F (17 September 2008); doi: 10.1117/12.810198; https://doi.org/10.1117/12.810198
PROCEEDINGS
11 PAGES


SHARE
RELATED CONTENT

Design and modeling of a measuring device for a TIR...
Proceedings of SPIE (September 08 2006)
Illumination merit functions
Proceedings of SPIE (September 18 2007)

Back to Top