Design of LED spherical lamps for uniform far-field illumination

Ivan Moreno

doi:10.1117/12.674661

10 February 2006 Design of LED spherical lamps for uniform far-field illumination

Ivan Moreno

Proceedings Volume 6046, Fifth Symposium Optics in Industry; 60462E (2006) https://doi.org/10.1117/12.674661
Event: Fifth Symposium Optics in Industry, 2005, Santiago De Queretaro, Mexico

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.

Citation Download Citation

Ivan Moreno "Design of LED spherical lamps for uniform far-field illumination", Proc. SPIE 6046, Fifth Symposium Optics in Industry, 60462E (10 February 2006); https://doi.org/10.1117/12.674661

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