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Licensed Unlicensed Requires Authentication Published by De Gruyter July 26, 2016

Precision injection molding of freeform optics

Fengzhou Fang, Nan Zhang and Xiaodong Zhang

Abstract

Precision injection molding is the most efficient mass production technology for manufacturing plastic optics. Applications of plastic optics in field of imaging, illumination, and concentration demonstrate a variety of complex surface forms, developing from conventional plano and spherical surfaces to aspheric and freeform surfaces. It requires high optical quality with high form accuracy and lower residual stresses, which challenges both optical tool inserts machining and precision injection molding process. The present paper reviews recent progress in mold tool machining and precision injection molding, with more emphasis on precision injection molding. The challenges and future development trend are also discussed.

Acknowledgments

The authors thank Mr. Y. W Guo and Mr. Y. B Lu for their support on diamond machining and injection molding of plastic optics. Acknowledgments are extended to the support of the National Natural Science Foundation (Grant No. 51320105009 and 91423101) and the ‘111’ project by the State Administration of Foreign Experts Affairs and the Ministry of Education of China (Grant No. B07014).

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Received: 2016-5-16
Accepted: 2016-6-21
Published Online: 2016-7-26
Published in Print: 2016-8-1

©2016 THOSS Media & De Gruyter

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