We propose a compact optical system made up of a thin collimator and a free-form lens array to provide the uniform illumination of various-shape regions. Analytical formulas to design the lens array are derived. The simulation results for the designed optical elements demonstrate the high-level illumination uniformity of various regions in the form of a rectangle, a cross, a flag-shaped region, a line segment, and a set of line segments.
© 2012 Optical Society of America
Original Manuscript: July 12, 2012
Manuscript Accepted: August 27, 2012
Published: October 12, 2012
Emil Aslanov, Leonid L. Doskolovich, and Mikhail A. Moiseev, "Thin LED collimator with free-form lens array for illumination applications," Appl. Opt. 51, 7200-7205 (2012)