Full Text:   <5828>

CLC number: O43; TH74

On-line Access: 2024-08-27

Received: 2023-10-17

Revision Accepted: 2024-05-08

Crosschecked: 2012-11-12

Cited: 9

Clicked: 9155

Citations:  Bibtex RefMan EndNote GB/T7714

-   Go to

Article info.
1. Reference List
Open peer comments

Journal of Zhejiang University SCIENCE C 2012 Vol.13 No.12 P.929-936

http://doi.org/10.1631/jzus.C12a0116


Optimized design of LED freeform lens for uniform circular illumination


Author(s):  Peng Liu, Reng-mao Wu, Zhen-rong Zheng, Hai-feng Li, Xu Liu

Affiliation(s):  State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   benlau@zju.edu.cn, zzr@zju.edu.cn

Key Words:  Illumination design, Lenses, Light emitting diode (LED), Non-imaging optics


Peng Liu, Reng-mao Wu, Zhen-rong Zheng, Hai-feng Li, Xu Liu. Optimized design of LED freeform lens for uniform circular illumination[J]. Journal of Zhejiang University Science C, 2012, 13(12): 929-936.

@article{title="Optimized design of LED freeform lens for uniform circular illumination",
author="Peng Liu, Reng-mao Wu, Zhen-rong Zheng, Hai-feng Li, Xu Liu",
journal="Journal of Zhejiang University Science C",
volume="13",
number="12",
pages="929-936",
year="2012",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.C12a0116"
}

%0 Journal Article
%T Optimized design of LED freeform lens for uniform circular illumination
%A Peng Liu
%A Reng-mao Wu
%A Zhen-rong Zheng
%A Hai-feng Li
%A Xu Liu
%J Journal of Zhejiang University SCIENCE C
%V 13
%N 12
%P 929-936
%@ 1869-1951
%D 2012
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.C12a0116

TY - JOUR
T1 - Optimized design of LED freeform lens for uniform circular illumination
A1 - Peng Liu
A1 - Reng-mao Wu
A1 - Zhen-rong Zheng
A1 - Hai-feng Li
A1 - Xu Liu
J0 - Journal of Zhejiang University Science C
VL - 13
IS - 12
SP - 929
EP - 936
%@ 1869-1951
Y1 - 2012
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.C12a0116


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.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

[1]Bol’shukhin, V.A., Ilyasov, V.S., Soshchin, N.P., Ulasyuk, V.N., 2011. Illuminators based on composite LEDs for multifunctional high-luminance active-matrix liquid-crystal displays. J. Opt. Technol., 78(7):444-448.

[2]Cao, L.L., Han, Y.J., Feng, Z.X., Luo, Y., 2011. Reflector design for large-size spherical surface sources. Opt. Eng., 50(2):023001.

[3]Chen, F., Liu, S., Wang, K., Liu, Z.Y., Luo, X.B., 2009. Free-form lenses for high illumination quality light-emitting diode MR16 lamps. Opt. Eng., 48(12):123002.

[4]Chen, F., Wang, K., Qin, Z., Wu, D., Luo, X.B., Liu, S., 2010. Design method of high-efficient LED headlamp lens. Opt. Expr., 18(20):20926-20938.

[5]Chi, W., George, N., 2006. Light-emitting diode illumination design with a condensing sphere. J. Opt. Soc. Am. A, 23(9):2295-2298.

[6]Cvetkovic, A., Dross, O., Chaves, J., Benitez, P., Miñano, J.C., Mohedano, R., 2006. Etendue-preserving mixing and projection optics for high-luminance LEDs, applied to automotive headlamps. Opt. Expr., 14(26):13014-13020.

[7]Ding, Y., Liu, X., Zheng, Z.R., Gu, P.F., 2008. Freeform LED lens for uniform illumination. Opt. Expr., 16(17):12958-12966.

[8]Feng, Z.X., Luo, Y., Han, Y.J., 2010. Design of LED freeform optical system for road lighting with high luminance/illuminance ratio. Opt. Expr., 18(21):22020-22031.

[9]Fournier, F., Rolland, J., 2008. Optimization of freeform lightpipes for light-emitting-diode projectors. Appl. Opt., 47(7):957-966.

[10]Fournier, F.R., Cassarly, W.J., Rolland, J.P., 2010. Fast freeform reflector generation using source-target maps. Opt. Expr., 18(5):5295-5304.

[11]Koshel, R.J., 2005. Simplex optimization method for illumination design. Opt. Lett., 30(6):649-651.

[12]Krames, M.R., Shchekin, O.B., Mach, R.M., Muller, G.O., Zhou, L., Harbers, G., Craford, M.G., 2007. Status and future of high-power light-emitting diodes for solid-state lighting. J. Display Technol., 3(2):160-175.

[13]Luo, X.X., Liu, H., Lu, Z.W., Wang, Y., 2011. Automated optimization of an aspheric light-emitting diode lens for uniform illumination. Appl. Opt., 50(20):3412-3418.

[14]Luo, Y., Feng, Z.X., Han, Y.J., Li, H.T., 2010. Design of compact and smooth free-form optical system with uniform illuminance for LED source. Opt. Expr., 18(9):9055-9063.

[15]Moiseev, M.A., Doskolovich, L.L., Kazanskiy, N.L., 2011. Design of high-efficient freeform LED lens for illumination of elongated rectangular regions. Opt. Expr., 19(S3):A225-A233.

[16]Oliker, V., 2007. Optical design of freeform two-mirror beam-shaping systems. J. Opt. Soc. Am. A, 24(12):3741-3752.

[17]Pan, J.W., Wang, C.M., Lan, H.C., Sun, W.S., Chang, J.Y., 2007. Homogenized LED-illumination using microlens arrays for a pocket-sized projector. Opt. Expr., 15(17):10483-10491.

[18]Parkyn, B., Pelka, D., 2006. Free-form illumination lens designed by a pseudo-rectangular lawnpower algorithm. SPIE, 6338:633808-1-633808-7.

[19]Piegl, L., Tiller, W., 1997. The NURBS Book (2nd Ed.). Springer-Verlag, Germany, p.246-253.

[20]Ries, H., 2002. Tailoring freeform optical surfaces. J. Opt. Soc. Am. A, 19(3):590-595.

[21]Ries, H., Muschaweck, J., 2001. Tailoring freeform lenses for illumination. SPIE, 4442:43-50.

[22]Rubinstein, J., Wolansky, G., 2007. Intensity control with a free-form lens. J. Opt. Soc. Am. A, 24(2):463-469.

[23]Situ, W.C., Han, Y.Y., Li, H.T., Luo, Y., 2011. Combined feedback method for designing a free-form optical system with complicated illumination patterns for an extended LED source. Opt. Expr., 19(s5):A1022-A1030.

[24]Tai, W., Schwarte, R., 2000. Design of an aspherical lens to generate a homogenous irradiance for three-dimensional sensors with a light-emitting-diode source. Appl. Opt., 39(31):5801-5805.

[25]Wang, K., Chen, F., Liu, Z.Y., Luo, X.B., Liu, S., 2010. Design of compact freeform lens for application specific light-emitting diode packaging. Opt. Expr., 18(2):413-425.

[26]Wang, L., 2007. Discontinuous free-form lens design for prescribed irradiance. Appl. Opt., 46(18):3716-3723.

[27]Wu, R.M., Zheng, Z.R., Li, H.F., Liu, X., 2011a. Constructing optical freeform surfaces using unit tangent vectors of feature data points. J. Opt. Soc. Am. A, 28(9):1880-1888.

[28]Wu, R.M., Li, H.F., Zheng, Z.R., Liu, X., 2011b. Freeform lens arrays for off-axis illumination in an optical lithography system. Appl. Opt., 50(5):725-732.

[29]Wu, R.M., Zheng, Z.R., Li, H.F., Liu, X., 2011c. Freeform lens for off-axis illumination in optical lithography system. Opt. Commun., 284(12):2662-2667.

[30]Zhang, W.Z., Liu, Q.X., Gao, H.F., Yu, F.H., 2010. Free-form reflector optimization for general lighting. Opt. Eng., 49(6):063003.

[31]Zhao, S., Wang, K., Chen, F., Wu, D., Liu, S., 2011. Lens design of LED searchlight of high brightness and distant spot. J. Opt. Soc. Am. A, 28(5):815-820.

[32]Zhao, X., Fang, Z.L., Cui, J.C., Zhang, X., Mu, G.G., 2007. Illumination system using LED sources for pocket-size projectors. Appl. Opt., 46(4):522-526.

[33]Zheng, Z.R., Hao, X., Liu, X., 2009. Freeform surface lens for LED uniform illumination. Appl. Opt., 48(35):6627-6634.

Open peer comments: Debate/Discuss/Question/Opinion

<1>

Please provide your name, email address and a comment





Journal of Zhejiang University-SCIENCE, 38 Zheda Road, Hangzhou 310027, China
Tel: +86-571-87952783; E-mail: cjzhang@zju.edu.cn
Copyright © 2000 - 2024 Journal of Zhejiang University-SCIENCE