Freeform lens design using a complementary optimization method for uniform illumination with extended LED light sources

Te Yuan Wang, Jin-Jia Chen, Kuang Lung Huang, Chuen Ching Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

We propose a complementary optimization method to design a freeform lens for uniform illumination with extended LED sources. With this method, a primary freeform lens is first constructed based on a source-target energy mapping approach; then a complementary illuminance on the target plane is introduced to optimize the primary freeform lens so that it can produce uniform illumination with an extended COB LED. The computer simulation results show that the illuminance uniformity of the optimized lens can be improved nearby 30% as compared with that of the primary lens; meanwhile, the optical efficiency achieves above 94%..

Original languageEnglish
Title of host publicationOptical Design and Testing VI
EditorsChunlei Du, Jose Sasian, Yongtian Wang, Kimio Tatsuno
PublisherSPIE
ISBN (Electronic)9781628413458
DOIs
Publication statusPublished - 2014 Jan 1
EventOptical Design and Testing VI - Beijing, China
Duration: 2014 Oct 92014 Oct 10

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9272
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherOptical Design and Testing VI
CountryChina
CityBeijing
Period14-10-0914-10-10

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Wang, T. Y., Chen, J-J., Huang, K. L., & Wang, C. C. (2014). Freeform lens design using a complementary optimization method for uniform illumination with extended LED light sources. In C. Du, J. Sasian, Y. Wang, & K. Tatsuno (Eds.), Optical Design and Testing VI [927214] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9272). SPIE. https://doi.org/10.1117/12.2071178