Optimized design of LED freeform lens for uniform circular illumination

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

doi:10.1631/jzus.C12a0116

Your Location：

Home >

Browse articles >

Optimized design of LED freeform lens for uniform circular illumination

Electronic Engineering | Updated：2022-12-09

- Optimized design of LED freeform lens for uniform circular illumination
- Optimized design of LED freeform lens for uniform circular illumination
- Frontiers of Information Technology & Electronic Engineering Vol. 13, Issue 12, Pages: 929-936(2012)
- Affiliations：
  
  State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China
- Author bio：
  
  Zhen-rong ZHENG, E-mail: zzr@zju.edu.cn
  [ "Peng LIU, E-mail: benlau@zju.edu.cn" ]
- Funds：
- DOI：10.1631/jzus.C12a0116
  CLC： O43;TH74
- Received：27 April 2012，
  
  Revised：2012-11-12，
  
  Published：2012-12
- Accepted：
Scan QR Code
Peng LIU, Reng-mao WU, Zhen-rong ZHENG, et al. Optimized design of LED freeform lens for uniform circular illumination[J]. Frontiers of Information Technology & Electronic Engineering, 2012, 13(12): 929-936.
DOI：

Peng LIU, Reng-mao WU, Zhen-rong ZHENG, et al. Optimized design of LED freeform lens for uniform circular illumination[J]. Frontiers of Information Technology & Electronic Engineering, 2012, 13(12): 929-936. DOI： 10.1631/jzus.C12a0116.

摘要

Abstract

An optimization method is proposed for designing an LED freeform lens which produces a uniform circular pattern with high energy efficiency. This method is composed of three main aspects: design of the initial guess

parameterization of the freeform surface

and construction of the merit function. The initial guess is created by solving an ordinary differential equation numerically. An approach of selecting optimization points is introduced for parameterization of the freeform surface. The merit function is constructed by use of the irradiance uniformity and the efficiency of the lens. Design examples are given

and the results show that the irradiance distribution is well controlled with a maximum uniformity (the relative standard deviation of irradiance

RSD) of 0.0122 and a maximum efficiency of 93.88%. This optimization method can be generalized to design freeform lenses with different lighting patterns or without rotational symmetry.

关键词

Keywords

references

V.A. Bol'shukhin , , , V.S. Ilyasov , , , N.P. Soshchin , , , V.N. Ulasyuk . . Illuminators based on composite LEDs for multifunctional high-luminance active-matrix liquid-crystal displays . . J. Opt. Technol. , , 2011 . . 78 ( ( 7 ): ): 444 - - 448 . . DOI: 10.1364/JOT.78.000444 http://doi.org/10.1364/JOT.78.000444 . .

L.L. Cao , , , Y.J. Han , , , Z.X. Feng , , , Y. Luo . . Reflector design for large-size spherical surface sources . . Opt. Eng. , , 2011 . . 50 ( ( 2 ): ): 023001 DOI: 10.1117/1.3541803 http://doi.org/10.1117/1.3541803 . .

F. Chen , , , S. Liu , , , K. Wang , , , Z.Y. Liu , , , X.B. Luo . . Free-form lenses for high illumination quality light-emitting diode MR16 lamps . . Opt. Eng. , , 2009 . . 48 ( ( 12 ): ): 123002 DOI: 10.1117/1.3274677 http://doi.org/10.1117/1.3274677 . .

F. Chen , , , K. Wang , , , Z. Qin , , , D. Wu , , , X.B. Luo , , , S. Liu . . Design method of high-efficient LED headlamp lens . . Opt. Expr. , , 2010 . . 18 ( ( 20 ): ): 20926 - - 20938 . . DOI: 10.1364/OE.18.020926 http://doi.org/10.1364/OE.18.020926 . .

W. Chi , , , N. George . . Light-emitting diode illumination design with a condensing sphere . . J. Opt. Soc. Am. A , , 2006 . . 23 ( ( 9 ): ): 2295 - - 2298 . . DOI: 10.1364/JOSAA.23.002295 http://doi.org/10.1364/JOSAA.23.002295 . .

A. Cvetkovic , , , O. Dross , , , J. Chaves , , , P. Benitez , , , J.C. Miñano , , , 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 . .

Z.X. Feng , , , Y. Luo , , , Y.J. Han . . Design of LED freeform optical system for road lighting with high luminance/illuminance ratio . . Opt. Expr. , , 2010 . . 18 ( ( 21 ): ): 22020 - - 22031 . . DOI: 10.1364/OE.18.022020 http://doi.org/10.1364/OE.18.022020 . .

F. Fournier , , , J. Rolland . . Optimization of freeform lightpipes for light-emitting-diode projectors . . Appl. Opt. , , 2008 . . 47 ( ( 7 ): ): 957 - - 966 . . DOI: 10.1364/AO.47.000957 http://doi.org/10.1364/AO.47.000957 . .

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 . .

M.R. Krames , , , O.B. Shchekin , , , R.M. Mach , , , G.O. Muller , , , L. Zhou , , , G. Harbers , , , M.G. Craford . . Status and future of high-power light-emitting diodes for solid-state lighting . . J. Display Technol. , , 2007 . . 3 ( ( 2 ): ): 160 - - 175 . . DOI: 10.1109/JDT.2007.895339 http://doi.org/10.1109/JDT.2007.895339 . .

X.X. Luo , , , H. Liu , , , Z.W. Lu , , , Y. Wang . . Automated optimization of an aspheric light-emitting diode lens for uniform illumination . . Appl. Opt. , , 2011 . . 50 ( ( 20 ): ): 3412 - - 3418 . . DOI: 10.1364/AO.50.003412 http://doi.org/10.1364/AO.50.003412 . .

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 . .

M.A. Moiseev , , , L.L. Doskolovich , , , N.L. Kazanskiy . . Design of high-efficient freeform LED lens for illumination of elongated rectangular regions . . Opt. Expr. , , 2011 . . 19 ( ( S3 ): ): A225 - - A233 . . DOI: 10.1364/OE.19.00A225 http://doi.org/10.1364/OE.19.00A225 . .

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 . .

J.W. Pan , , , C.M. Wang , , , H.C. Lan , , , W.S. Sun , , , J.Y. Chang . . Homogenized LED-illumination using microlens arrays for a pocket-sized projector . . Opt. Expr. , , 2007 . . 15 ( ( 17 ): ): 10483 - - 10491 . . DOI: 10.1364/OE.15.010483 http://doi.org/10.1364/OE.15.010483 . .

B. Parkyn , , , D. Pelka . . Free-form illumination lens designed by a pseudo-rectangular lawnpower algorithm . . SPIE , , 2006 . . 6338 633808-1 - - 633808-7 . . DOI: 10.1117/12.682899 http://doi.org/10.1117/12.682899 . .

L. Piegl , , , W. Tiller . . The NURBS Book , , 2nd Ed : : Germany Springer-Verlag , , 1997 . . p.246 - - 253 . . DOI: 10.1007/978-3-642-59223-2 http://doi.org/10.1007/978-3-642-59223-2 . .

H. Ries . . Tailoring freeform optical surfaces . . J. Opt. Soc. Am. A , , 2002 . . 19 ( ( 3 ): ): 590 - - 595 . . DOI: 10.1364/JOSAA.19.000590 http://doi.org/10.1364/JOSAA.19.000590 . .

H. Ries , , , J. Muschaweck . . Tailoring freeform lenses for illumination . . SPIE , , 2001 . . 4442 43 - - 50 . . DOI: 10.1117/12.449957 http://doi.org/10.1117/12.449957 . .

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 . .

W.C. Situ , , , Y.Y. Han , , , H.T. Li , , , Y. Luo . . Combined feedback method for designing a free-form optical system with complicated illumination patterns for an extended LED source . . Opt. Expr. , , 2011 . . 19 ( ( s5 ): ): A1022 - - A1030 . . DOI: 10.1364/OE.19.0A1022 http://doi.org/10.1364/OE.19.0A1022 . .

W. Tai , , , R. Schwarte . . Design of an aspherical lens to generate a homogenous irradiance for three-dimensional sensors with a light-emitting-diode source . . Appl. Opt. , , 2000 . . 39 ( ( 31 ): ): 5801 - - 5805 . . DOI: 10.1364/AO.39.005801 http://doi.org/10.1364/AO.39.005801 . .

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 . .

L. Wang . . Discontinuous free-form lens design for prescribed irradiance . . Appl. Opt. , , 2007 . . 46 ( ( 18 ): ): 3716 - - 3723 . . DOI: 10.1364/AO.46.003716 http://doi.org/10.1364/AO.46.003716 . .

R.M. Wu , , , Z.R. Zheng , , , H.F. Li , , , X. Liu . . Constructing optical freeform surfaces using unit tangent vectors of feature data points . . J. Opt. Soc. Am. A , , 2011a . . 28 ( ( 9 ): ): 1880 - - 1888 . . DOI: 10.1364/JOSAA.28.001880 http://doi.org/10.1364/JOSAA.28.001880 . .

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

R.M. Wu , , , Z.R. Zheng , , , H.F. Li , , , X. Liu . . Freeform lens for off-axis illumination in optical lithography system . . Opt. Commun. , , 2011c . . 284 ( ( 12 ): ): 2662 - - 2667 . . DOI: 10.1016/j.optcom.2011.02.028 http://doi.org/10.1016/j.optcom.2011.02.028 . .

W.Z. Zhang , , , Q.X. Liu , , , H.F. Gao , , , F.H. Yu . . Free-form reflector optimization for general lighting . . Opt. Eng. , , 2010 . . 49 ( ( 6 ): ): 063003 DOI: 10.1117/1.3430576 http://doi.org/10.1117/1.3430576 . .

S. Zhao , , , K. Wang , , , F. Chen , , , D. Wu , , , S. Liu . . Lens design of LED searchlight of high brightness and distant spot . . J. Opt. Soc. Am. A , , 2011 . . 28 ( ( 5 ): ): 815 - - 820 . . DOI: 10.1364/JOSAA.28.000815 http://doi.org/10.1364/JOSAA.28.000815 . .

X. Zhao , , , Z.L. Fang , , , J.C. Cui , , , X. Zhang , , , G.G. Mu . . Illumination system using LED sources for pocket-size projectors . . Appl. Opt. , , 2007 . . 46 ( ( 4 ): ): 522 - - 526 . . DOI: 10.1364/AO.46.000522 http://doi.org/10.1364/AO.46.000522 . .

Z.R. Zheng , , , X. Hao , , , X. Liu . . Freeform surface lens for LED uniform illumination . . Appl. Opt. , , 2009 . . 48 ( ( 35 ): ): 6627 - - 6634 . . DOI: 10.1364/AO.48.006627 http://doi.org/10.1364/AO.48.006627 . .

Views

Downloads

CSCD

Alert me when the article has been cited

Submit

Tools

Publicity Resources

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

Related Author

Reng-mao WU

Peng LIU

Ya-qin ZHANG

Zhen-rong ZHENG

Hai-feng LI

Xu LIU

Related Institution

State Key Laboratory of Modern Optical Instrumentations, Zhejiang University

Chat

Address：Zhejiang University Press, 148 Tianmushan Road, Hangzhou, China Postal code：310028
Tel：+86-571-88273162 Email：fitee@zju.edu.cn
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰