Free-form reflector design for beam shaping of laser diode

被引：0

作者：

Tang, Jian ^{[1
]}

Yang, Bo ^{[1
]}

机构：

[1] School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai

来源：

Guangxue Xuebao/Acta Optica Sinica | 2015年 / 35卷 / 02期

关键词：

Free-form surface design; Illumination; Laser diode; Nonimaging optics; Optical design; Point cloud; Straight-line light pattern;

D O I：

10.3788/AOS201535.0208002

中图分类号：

学科分类号：

摘要：

Laser with straight-line light pattern and uniform illumination is required in many measurement systems and laser welding systems. Instead of the traditional methods using diffractive optical elements and cylindrical lens, a free-form surface design method for laser diode source is proposed to improve the utilization efficiency of the light energy and the optical lighting effect, utilizing a free-form reflector to distribute the light uniformly in one direction and collimate the light in the orthogonal direction. Through the establishment of free surface model, constructing the partial differential equation, and solving the point cloud of surface, the shape of the freeform surface is obtained. Compared with the traditional methods in the line pattern design, the efficiency and uniformity are both significantly enhanced by this method. The simulation result shows that an illuminance uniformity is about 90% and an efficiency about 99% (without considering the reflectance loss) are achieved within 150° of the spread angle. ©, 2015, Chinese Optical Society. All right reserved.

引用

页数：6

共 11 条

[1]

Zhenrong Z., Xiang H., Xu L., Freeform surface lens for LED uniform illumination, Appl Opt, 48, 35, pp. 6627-6634, (2009)

[2]

Yu G., Jin J., Ni X., Et al., Design for LED uniform illumination reflector based on etendue, Acta Optica Sinica, 29, 8, pp. 2297-2301, (2009)

[3]

Ding Y., Gu P., Freeform reflector for uniform illumination, Acta Optica Sinica, 27, 3, pp. 540-544, (2007)

[4]

Ding Y., Liu X., Zheng Z.R., Et al., Freeform LED lens for uniform illumination, Opt Express, 16, 17, pp. 12958-12966, (2008)

[5]

Liu Z., Sun Y., Lin Y., Freeform reflector design for rectangular illuminance based on differential geometry, Acta Optica Sinica, 32, 10, (2012)

[6]

Wu R.M., Zheng Z.R., Li H.F., Et al., Optimization design of irradiance array for LED uniform rectangular illumination, Appl Opt, 51, 13, pp. 2257-2263, (2012)

[7]

Moiseev M.A., Doskolovich L.L., Kazanskiy N.L., Design of high-efficient freeform LED lens for illumination of elongated rectangular regions, Opt Express, 19, 103, pp. A225-A233, (2011)

[8]

Chen W., Introduction of Differential, pp. 101-109, (1990)

[9]

Lu T., Kang Z., Fang X., Numerical Computing Methods, (2013)

[10]

Chase H., Optical design with rotationally symmetric NURBS, 4832, pp. 10-24, (2002)

← 1 2 →