OSA's Digital Library

Energy Express

Energy Express

  • Editor: Bernard Kippelen
  • Vol. 19, Iss. S5 — Sep. 12, 2011
  • pp: A1022–A1030

Combined feedback method for designing a free-form optical system with complicated illumination patterns for an extended LED source

Wenchang Situ, Yanjun Han, Hongtao Li, and Yi Luo  »View Author Affiliations

Optics Express, Vol. 19, Issue S5, pp. A1022-A1030 (2011)

View Full Text Article

Enhanced HTML    Acrobat PDF (1584 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



A combined feedback design method based on variable separation mapping is proposed in this paper to design free-form optical systems for an extended LED source with complicated illumination patterns. In this method, macro energy division and micro illuminance distribution feedback modifications are carried out according to the deviation between the simulated illumination results and the target requirements. The free-form optical system is then regenerated, and the deviation could be minimized through multiple iterations. Results indicate that free-form optical system designed by this method could achieve precise energy distribution, high regional illuminance uniformity (89.7%), and high light output efficiency (94.9%) simultaneously.

© 2011 OSA

OCIS Codes
(230.3670) Optical devices : Light-emitting diodes
(220.2945) Optical design and fabrication : Illumination design
(080.4225) Geometric optics : Nonspherical lens design
(080.4298) Geometric optics : Nonimaging optics

ToC Category:
Light-Emitting Diodes

Original Manuscript: March 4, 2011
Revised Manuscript: May 13, 2011
Manuscript Accepted: July 6, 2011
Published: July 15, 2011

Wenchang Situ, Yanjun Han, Hongtao Li, and Yi Luo, "Combined feedback method for designing a free-form optical system with complicated illumination patterns for an extended LED source," Opt. Express 19, A1022-A1030 (2011)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. Y. Luo, Z. X. Feng, Y. J. Han, and H. T. Li, “Design of compact and smooth free-form optical system with uniform illuminance for LED source,” Opt. Express 18(9), 9055–9063 (2010). [CrossRef] [PubMed]
  2. R. Winston, J. C. Miñano, and P. Benítez, eds., with contributions by N. Shatz and J. C. Bortz, eds., Nonimaging Optics (Elsevier, 2005).
  3. Y. Luo, X. Zhang, L. Wang, Y. Yang, F. Hu, K. Y. Qian, Y. J. Han, W. Lee, O. Zhang, and G. Deng, “Non-imaging optics and its application in solid state lighting,” Chin. J. Lasers 35(7), 964–971 (2008).
  4. Y. Yi, K. Y. Qian, and Y. Luo, “A novel LED uniform illuminance system based on nonimaging optics,” Opt. Technol. 33(1), 110–112 (2007).
  5. H. Ries and J. A. Muschaweck, “Tailored freeform optical surfaces,” J. Opt. Soc. Am. A 19(3), 590–595 (2002). [CrossRef] [PubMed]
  6. A. Timinger, J. Muschaweck, and H. Ries, “Designing tailored free-form surfaces for general illumination,” Proc. SPIE 5186, 128–132 (2003). [CrossRef]
  7. V. Oliker, “Geometric and variational methods in optical design of reflecting surfaces with prescribed illuminance properties,” Proc. SPIE 5942, 594207 (2005). [CrossRef]
  8. J. Bortz and N. Shatz, “Generalized functional method of nonimaging optical design,” Proc. SPIE 6338, 633805 (2006). [CrossRef]
  9. L. Wang, K. Y. Qian, and Y. Luo, “Discontinuous free-form lens design for prescribed irradiance,” Appl. Opt. 46(18), 3716–3723 (2007). [CrossRef] [PubMed]
  10. Y. J. Han, X. Zhang, Z. Feng, K. Qian, H. Li, Y. Luo, G. Huang, and B. Zhu, “Variable-separation three dimensional freeform nonimaging optical system design based on target-to-source mapping and micro belt surface construction,” Sciencepaper Online 1–9 (2010). http://www.paper.edu.cn/en/paper.php?serial_number=201002-443

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited