Abstract

We report a design method based on an annularly stitched aspherical surface for highly collimated optical systems with extended light sources. The annularly stitched aspherical surface is constructed as a circular central zone and one or more annular zones, which are rotationally symmetric and provide flexibility to satisfy the requirements of a practical design. An extended LED light source can be considered, and a backward ray-tracing process is used to construct the initial lens model. The specific optimization has been added step by step to modify the stitched surface to redistribute the light rays emitted from the extended source. The smoothness of the stitched surface is considered in the design and optimization process to guarantee the processability of the system. A prototype has been fabricated and tested, which demonstrates the validity of this method.

© 2022 Optica Publishing Group

Design and prototyping of highly-collimated long-distance optical systems with an LED light source

Chen Gong, Haiping Xu, Chen Xu, Jinhua Liang, and Yajie Mu
Appl. Opt. 59(28) 8724-8732 (2020)

Freeform illumination optics design for extended LED sources through a localized surface control method

Zhengbo Zhu, Shili Wei, Zichao Fan, and Donglin Ma
Opt. Express 30(7) 11524-11535 (2022)

Free-form illumination of a refractive surface using multiple-faceted refractors

Weitao Song, Dewen Cheng, Yue Liu, and Yongtian Wang
Appl. Opt. 54(28) E1-E7 (2015)

Design and optical performance research of a fully customizable collimating lens based on total internal reflection

J. C. Xing, H. Li, Z. Q. Zhang, and Z. T. Chen
Appl. Opt. 61(13) 3679-3686 (2022)

Collimating lens for light-emitting-diode light source based on non-imaging optics

Guangzhen Wang, Lili Wang, Fuli Li, and Gongjian Zhang
Appl. Opt. 51(11) 1654-1659 (2012)