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Proceedings Paper

Nonimaging optics: optical design at the thermodynamic limit
Author(s): Roland Winston
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Paper Abstract

Th design mcthods of nonimaging optics for illumination by light sourccs which arc of• finite extcnt arc well cstablishcd1. Two classcs of algorithms havc b2cn found which work at or ncar th2 s2cond—law of thermodynamics limit of prformancc. Th2 first of thsc is the "string" or "cdgc—ray" mcthod. It may bc succinctly characterized as a gcncralization of Fcrmat's principle. While all of imaging optics can in principle be derived from: _1 ndl = constant along a ray, the string solutions can be similarly derived from: I ndl = constant along a string. The second class of algorithms places reflectors along the line of flow of a radiation field set up by a radiating source. In cases of high symmetry such as a sphere or disc, we obtain ideal solutions in both two and three dimensions.

Paper Details

Date Published: 24 October 1991
PDF: 5 pages
Proc. SPIE 1528, Nonimaging Optics: Maximum Efficiency Light Transfer, (24 October 1991); doi: 10.1117/12.49125
Show Author Affiliations
Roland Winston, Univ. of Chicago (United States)


Published in SPIE Proceedings Vol. 1528:
Nonimaging Optics: Maximum Efficiency Light Transfer
Roland Winston; Robert L. Holman, Editor(s)

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