Ray targeting for optimizing smooth freeform surfaces for LED non-rotational illumination

Reng-mao WU; Peng LIU; Ya-qin ZHANG; Zhen-rong ZHENG; Hai-feng LI; Xu LIU

doi:10.1631/jzus.C1300032

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Ray targeting for optimizing smooth freeform surfaces for LED non-rotational illumination

Electronic Engineering | Updated：2022-12-09

- Ray targeting for optimizing smooth freeform surfaces for LED non-rotational illumination
- Ray targeting for optimizing smooth freeform surfaces for LED non-rotational illumination
- Frontiers of Information Technology & Electronic Engineering Vol. 14, Issue 10, Pages: 785-791(2013)
- Affiliations：
  
  State Key Laboratory of Modern Optical Instrumentations, Zhejiang University, Hangzhou 310027, China
- Author bio：
  
  [ "Reng-mao WU, E-mail: wrmshu@163.com" ]
  Zhen-rong ZHENG, E-mail:zzr@zju.edu.cn
- Funds：
- DOI：10.1631/jzus.C1300032
  CLC： O43
- Received：31 January 2013，
  
  Revised：2013-;9-16，
  
  Published：2013-10
- Accepted：
Scan QR Code
Reng-mao WU, Peng LIU, Ya-qin ZHANG, et al. Ray targeting for optimizing smooth freeform surfaces for LED non-rotational illumination[J]. Frontiers of Information Technology & Electronic Engineering, 2013, 14(10): 785-791.
DOI：

Reng-mao WU, Peng LIU, Ya-qin ZHANG, et al. Ray targeting for optimizing smooth freeform surfaces for LED non-rotational illumination[J]. Frontiers of Information Technology & Electronic Engineering, 2013, 14(10): 785-791. DOI： 10.1631/jzus.C1300032.

摘要

Abstract

We propose an effective optimization method for generating smooth freeform surfaces for light-emitting diode (LED) non-rotational illumination based on ray targeting. This method begins with a starting design and goes through two optimization steps. An initial estimate is determined using a partial differential equation (PDE) method and a variable separation mapping. In the first optimization step the merit function is developed with ray targeting to ensure the shape of the illumination pattern. The purpose of the second optimization is to further improve the optical performance by constructing the merit function with uniformity and efficiency. Smooth freeform reflective and refractive surfaces

which can produce a uniform rectangular illumination without rotational symmetry

are designed using this method. The results show that uniform rectangular illumination is achieved and that smooth freeform surfaces are obtained. With ray targeting

the design efficiency can be significantly enhanced

and excellent optical performance can be achieved.

关键词

Keywords

references

A. Cvetkovic , , , O. Dross , , , J. Chaves , , , P. Benitez , , , J.C. Miano , , , R. Mohedano . . Etendue-preserving mixing and projection optics for high-luminance LEDs, applied to automotive headlamps . . Opt. Expr. , , 2006 . . 14 ( ( 26 ): ): 13014 - - 13020 . . DOI: 10.1364/OE.14.013014 http://doi.org/10.1364/OE.14.013014 . .

Y. Ding , , , X. Liu , , , Z.R. Zheng , , , P.F. Gu . . Freeform LED lens for uniform illumination . . Opt. Expr. , , 2008 . . 16 ( ( 17 ): ): 12958 - - 12966 . . DOI: 10.1364/OE.16.012958 http://doi.org/10.1364/OE.16.012958 . .

F.R. Fournier , , , W.J. Cassarly , , , J.P. Rolland . . Fast freeform reflector generation using source-target maps . . Opt. Expr. , , 2010 . . 18 ( ( 5 ): ): 5295 - - 5304 . . DOI: 10.1364/OE.18.005295 http://doi.org/10.1364/OE.18.005295 . .

R.J. Koshel . . Simplex optimization method for illumination design . . Opt. Lett. , , 2005 . . 30 ( ( 6 ): ): 649 - - 651 . . DOI: 10.1364/OL.30.000649 http://doi.org/10.1364/OL.30.000649 . .

Y. Luo , , , Z.X. Feng , , , Y.J. Han , , , H.T. Li . . Design of compact and smooth free-form optical system with uniform illuminance for LED source . . Opt. Expr. , , 2010 . . 18 ( ( 9 ): ): 9055 - - 9063 . . DOI: 10.1364/OE.18.009055 http://doi.org/10.1364/OE.18.009055 . .

D. Michaelis , , , P. Schreiber , , , A. Bruer . . Cartesian oval representation of freeform optics in illumination systems . . Opt. Lett. , , 2011 . . 36 ( ( 6 ): ): 918 - - 920 . . DOI: 10.1364/OL.36.000918 http://doi.org/10.1364/OL.36.000918 . .

V. Oliker . . Mathematical Aspects of Design of Beam Shaping Surfaces in Geometrical Optics. In : Kirkilionis, M., Krmker, S., Rannacher, R., et al . (Eds.), Trends in Nonlinear Analysis . . Springer Verlag, Germany , , 2000 . . p.193 - - 224 . . . .

V. Oliker . . Optical design of freeform two-mirror beam- shaping systems . . J. Opt. Soc. Am. A , , 2007 . . 24 ( ( 12 ): ): 3741 - - 3752 . . DOI: 10.1364/JOSAA.24.003741 http://doi.org/10.1364/JOSAA.24.003741 . .

L. Piegl , , , W. Tiller . . The NURBS Books (2nd Ed.) . . Springer Verlag, Germany , , 1997 . . p.100 - - 101 . . DOI: 10.1007/978-3-642-59223-2 http://doi.org/10.1007/978-3-642-59223-2 . .

H.R. Ries , , , R. Winston . . Tailored edge-ray reflectors for illumination . . J. Opt. Soc. Am. A , , 1994 . . 11 ( ( 4 ): ): 1260 - - 1264 . . DOI: 10.1364/JOSAA.11.001260 http://doi.org/10.1364/JOSAA.11.001260 . .

J. Rubinstein , , , G. Wolansky . . Intensity control with a free-form lens . . J. Opt. Soc. Am. A , , 2007 . . 24 ( ( 2 ): ): 463 - - 469 . . DOI: 10.1364/JOSAA.24.000463 http://doi.org/10.1364/JOSAA.24.000463 . .

K. Wang , , , F. Chen , , , Z.Y. Liu , , , X.B. Luo , , , S. Liu . . Design of compact freeform lens for application specific light- emitting diode packaging . . Opt. Expr. , , 2010 . . 18 ( ( 2 ): ): 413 - - 425 . . DOI: 10.1364/OE.18.000413 http://doi.org/10.1364/OE.18.000413 . .

R.M. Wu , , , H.F. Li , , , Z.R. Zheng , , , X. Liu . . Freeform lens arrays for off-axis illumination in optical lithography system . . Appl. Opt. , , 2011 . . 50 ( ( 5 ): ): 725 - - 732 . . DOI: 10.1364/AO.50.000725 http://doi.org/10.1364/AO.50.000725 . .

R.M. Wu , , , H.F. Li , , , Z.R. Zheng , , , X. Liu . . Optimization design of irradiance array for LED uniform rectangular illumination . . Appl. Opt. , , 2012 . . 51 ( ( 13 ): ): 2257 - - 2263 . . DOI: 10.1364/AO.51.002257 http://doi.org/10.1364/AO.51.002257 . .

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Peng LIU

Reng-mao WU

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State Key Laboratory of Modern Optical Instrumentation, Zhejiang University

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