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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)
http://dx.doi.org/10.1364/OE.19.0A1022


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Abstract

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

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

Citation
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)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-S5-A1022


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References

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