准直光
光学
泽尼克多项式
镜头(地质)
花键(机械)
光圈(计算机存储器)
计算机科学
波前
物理
声学
热力学
激光器
作者
Xianglong Mao,Jinpeng Li,Fengbiao Wang,Rong Gao,Xing Li,Yanxia Xie
出处
期刊:Applied Optics
[The Optical Society]
日期:2019-03-27
卷期号:58 (10): 2512-2512
被引量:12
摘要
A method is presented for the fast design of a smooth freeform lens to tailor a collimated light beam with an arbitrary contour. This method begins by calculating an initial surface based on a simplified ray mapping. Then the surface is fitted by a system of Zernike polynomials, whose weights are treated as the optimization variables for further optimization. In the optimization, the objective function is analytically calculated using a partial differential-equation-based approach. To validate the effectiveness of the proposed method, a freeform lens is designed for a collimated Gaussian beam with a spline contour to form a uniform illumination distribution with another spline contour, which takes only 26 s. A freeform lens is also fabricated and experimented, and its practical performance approaches the design.
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