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

作　　者：陈恩果 黄佳敏 郭太良 吴仍茂 

机构地区：[1]National and Local United Engineering Laboratory of Flat Panel Display Technology, Fuzhou University [2]Postdoctoral Research Station of Electronic Science and Technology, Fuzhou University [3]3D Visualization and Imaging System Lab, College of Optical Sciences, University of Arizona

出　　处：《Optoelectronics Letters》2016年第4期253-256,共4页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.61405037);the Science and Technology Project of Fujian Province(No.2015H4014)

摘　　要：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.

关 键 词：Fits and tolerances Lenses MICROLENSES 

分 类 号：TN249[电子电信—物理电子学]