A laser beam shaper for homogeneous rectangular illumination based on freeform micro lens array

CHEN En-guo; HUANG Jia-min; GUO Tai-liang; WU Reng-mao

doi:doi:10.1007/s11801-016-6037-y

光电子快报（英文版）, 2016, 12 (4): 253, Published Online: Oct. 12, 2017

A laser beam shaper for homogeneous rectangular illumination based on freeform micro lens array

论文大纲

CHEN En-guo ^1,2,*HUANG Jia-min ¹GUO Tai-liang ^1,2WU Reng-mao ³

Author Affiliations

¹ National and Local United Engineering Laboratory of Flat Panel Display Technology, Fuzhou University, Fuzhou 350002, China

² Postdoctoral Research Station of Electronic Science and Technology, Fuzhou University, Fuzhou 350002, China

³ 3D Visualization and Imaging System Lab, College of Optical Sciences, University of Arizona, Arizona 85721, USA

Abstract

An effective design method of freeform micro lens array is presented for shaping varied laser beams into prescribed rectangular illumination. The variable separation mapping is applied to design concave freeform surfaces for constructing a freeform lens array. Several dedicated examples show that the designed freeform optical lens array can achieve a prescribed rectangular illumination pattern, especially without considering the initial states of incident laser beams. Both high collection efficiency and good spatial uniformity can be available simultaneously. Tolerance analysis is also performed to demonstrate that this optical device can well avoid fabricating difficulty in actual applications.

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CHEN En-guo, HUANG Jia-min, GUO Tai-liang, WU Reng-mao. A laser beam shaper for homogeneous rectangular illumination based on freeform micro lens array[J]. 光电子快报（英文版）, 2016, 12(4): 253.

A laser beam shaper for homogeneous rectangular illumination based on freeform micro lens array

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