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Proceedings Paper

Radially symmetric freeform lens design for extended sources
Author(s): Peter Goldstein
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Paper Abstract

This paper describes a process for designing a radially-symmetric lens that receives light from a uniform, Lambertian disk of finite size and produces a prescribed intensity distribution. An algorithm is presented to design such a lens based on input parameters including the source diameter and luminance, the vertex location and center thickness of the lens, the desired output intensity distribution, and the output beam angle. The design process involves starting with a small center portion of the lens and progressively adding discrete, continuous sections around its diameter. Each section is tailored to produce the desired intensity in the output beam based on the projected area of the source in the far field according to the principle of luminance engineering.

Paper Details

Date Published: 19 October 2012
PDF: 13 pages
Proc. SPIE 8487, Novel Optical Systems Design and Optimization XV, 84870C (19 October 2012); doi: 10.1117/12.928329
Show Author Affiliations
Peter Goldstein, Philips Color Kinetics (United States)

Published in SPIE Proceedings Vol. 8487:
Novel Optical Systems Design and Optimization XV
G. Groot Gregory; Arthur J. Davis, Editor(s)

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