@inproceedings{d48e4b0866004307b2ac496017dae1ee,
title = "Freeform road lighting lens design",
abstract = "Road lighting can benefit strongly from LEDs and freeform lenses. However, freeform lenses design for road lighting applications is complicated and difficult when balancing energy efficiency and lighting quality. In addition, the asymmetric properties of the required light distributions and non-neglectable sizes of LEDs make the design more challenging. Currently, we prefer an efficient design strategy with two steps: light distribution optimization and freeform lens construction. In the first step, we employ a modified polynomial representation of the illuminance distribution and perform constrained optimization. In the second step, we construct the freeform lens with double freeform surfaces to realize the optimized light distribution using the ray mapping method associated with over compensation.",
keywords = "Freefrom lens, Optimization, Road lighting",
author = "Zexin Feng and Dewen Cheng and Yongtian Wang",
note = "Publisher Copyright: {\textcopyright} COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.; Illumination Optics V 2018 ; Conference date: 14-05-2018 Through 16-05-2018",
year = "2018",
doi = "10.1117/12.2312452",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Kidger, {Tina E.} and Stuart David",
booktitle = "Illumination Optics V",
address = "United States",
}
