刊物主题:Physics Applied Optics, Optoelectronics and Optical Devices Chinese Library of Science
出版者:Tianjin University of Technology, co-published with Springer-Verlag GmbH
ISSN:1993-5013
卷排序:12
文摘
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.This work has been supported by the National Natural Science Foundation of China (No.61405037), and the Science and Technology Project of Fujian Province (No.2015H4014).
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