Realizing freeform lenses using an optics 3D-printer for industrial based tailored irradiance distribution

被引：17
作者：
Assefa, Bisrat G. [1 ]
Saastamoinen, Toni [1 ]
Pekkarinen, Markku [1 ]
Nissinen, Ville [2 ]
Biskop, Joris [3 ]
Kuittinen, Markku [1 ]
Turunen, Jari [1 ]
Saarinen, Jyrki [1 ]
机构：
[1] Univ Eastern Finland, Inst Photon, POB 111, FI-80101 Joensuu, Finland
[2] Univ Eastern Finland, Dept Chem, POB 111, FI-80101 Joensuu, Finland
[3] Luxexcel, Res & Dev Dept, Slachthuisstr 112, Turnout, Belgium
来源：
OSA CONTINUUM | 2019年 / 2卷 / 03期
基金：
芬兰科学院;
关键词：
SURFACE DESIGN; LIGHT;
D O I：
10.1364/OSAC.2.000690
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Recent energy efficient illumination advancements have capitalized on using light-emitting diodes (LEDs) in combination with freeform lenses. However, the available freeform lens design methods are application specific. In addition, manufacturing of this class of optics is challenging. In this work, considering manufacturing constraints, we apply a customized algorithm to design freeform lenses for (1) transforming LED radiation into a uniform rectangular illumination pattern and (2) shaping collimated LED light beams into complex image target irradiance distributions. The algorithm is based on a numerical solution of the elliptic Monge-Ampere equation. Then, we proposed manufacturing these lenses using a modified ink-jet 3D printing technology called Printoptical technology. The demonstrated optical performance of printed lenses, exhibiting surface roughness of RMS = 10 +/- 2 nm, is in good agreement with the simulation. We also explored an industrial application of the 3D-printed lens matrix for low-cost illumination of a paper milling machine. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
引用
收藏
页码：690 / 702
页数：13
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