1 October 2002 Wave optical analysis of light-emitting diode beam shaping using microlens arrays
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Optical Engineering, 41(10), (2002). doi:10.1117/1.1499975
Abstract
We investigate the use of optical systems consisting of either one or two refractive microlens arrays, a collimating and Fourier transforming lens for LED beam homogenization. Due to the small lenslet diameters, diffraction can lead to significant deviations from the desired homogene intensity distribution. Therefore, we analyze the two setups applying scalar diffraction theory and explain the occurring effects using numerical calculations. Our theoretical calculations are supported by experimental results.
Alexander Buettner, Uwe D. Zeitner, "Wave optical analysis of light-emitting diode beam shaping using microlens arrays," Optical Engineering 41(10), (1 October 2002). http://dx.doi.org/10.1117/1.1499975
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KEYWORDS
Microlens array

Light emitting diodes

Diffraction

Beam shaping

Green light emitting diodes

Optical analysis

Microlens

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