We analyze the first-order design of light sources consisting of multiple light-emitting diodes (LEDs) to uniformly illuminate a near target plane by considering each single LED as an imperfect Lambertian emitter. Simple approximate equations and formulas are derived for the optimum LED-to-LED spacing, i.e., the optimum packaging density, of several array configurations to achieve uniform near-field irradiance.
© 2006 Optical Society of America
Original Manuscript: April 19, 2005
Revised Manuscript: July 24, 2005
Manuscript Accepted: July 27, 2005
Ivan Moreno, Maximino Avendaño-Alejo, and Rumen I. Tzonchev, "Designing light-emitting diode arrays for uniform near-field irradiance," Appl. Opt. 45, 2265-2272 (2006)