Abstract
A method of ray tracing for free-form optical surfaces has been developed. The ray tracing through such surfaces is based on Delaunay triangulation of the discrete data of the surface and is related to finite-element modeling. Some numerical examples of applications to analytical, noisy, and experimental free-form surfaces (in particular, a corneal topography map) are presented. Ray-tracing results (i.e., spot diagram root-mean-square error) with the new method are in agreement with those obtained using a modal fitting of the surface, for sampling densities higher than elements. The method competes in flexibility, simplicity, and computing times with standard methods for surface fitting and ray tracing.
© 2009 Optical Society of America
Full Article | PDF ArticleMore Like This
Staffan Schedin, Per Hallberg, and Anders Behndig
Appl. Opt. 55(3) 507-514 (2016)
Jun Yu, Zhengxiang Shen, Pengfeng Sheng, Xiaoqiang Wang, Charles J. Hailey, and Zhanshan Wang
Appl. Opt. 57(7) B74-B82 (2018)
Joris J. Snellenburg, Boy Braaf, Erik A. Hermans, Rob G.L. van der Heijde, and Victor Arni D. P. Sicam
Opt. Express 18(18) 19324-19338 (2010)