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Proceedings Paper

Design of LED spherical lamps for uniform far-field illumination
Author(s): Ivan Moreno
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Paper Abstract

Light-Emitting Diodes (LEDs) have matured to the point that they can be considered to replace the inefficient and short life incandescent lamps in many lighting applications. Though modern high power LEDs produce up 120 lumens per device, several individual LEDs must be mounted on panels to obtain practical powers. In this paper we analyze, by considering each single LED as an imperfect Lambertian emitter, the first order design of a lamp consisting of several LEDs assembled upon a spherical surface to uniformly illuminate far targets. Practical formulas are derived for the optimum LED-to-LED spacing, i.e., the optimum packaging density, of ring array configurations to achieve uniform far-field irradiance.

Paper Details

Date Published: 10 February 2006
PDF: 7 pages
Proc. SPIE 6046, Fifth Symposium Optics in Industry, 60462E (10 February 2006); doi: 10.1117/12.674661
Show Author Affiliations
Ivan Moreno, Univ. Autonoma de Zacatecas (Mexico)

Published in SPIE Proceedings Vol. 6046:
Fifth Symposium Optics in Industry
Eric Rosas; Rocío Cardoso; Juan C. Bermudez; Oracio Barbosa-García, Editor(s)

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