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

被引:13
作者
Song, Weitao [1 ,2 ]
Cheng, Dewen [1 ]
Liu, Yue [1 ]
Wang, Yongtian [1 ]
机构
[1] Beijing Inst Technol, Beijing Engn Res Ctr Mixed Real & Adv Display, Sch Optoelect, Beijing 100081, Peoples R China
[2] Univ Connecticut, Elect & Comp Engn Dept, Storrs, CT 06269 USA
基金
中国国家自然科学基金; 国家高技术研究发展计划(863计划);
关键词
HEAD-MOUNTED DISPLAY; OPTICAL-SYSTEM; LENS DESIGN; REPRESENTATION; SHAPE;
D O I
10.1364/AO.54.0000E1
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We report a design method based on multiple-faceted refractors for free-form illumination of a refractive surface. The free-form surface is constructed as a set of primitive surface elements, which provide flexibility to satisfy the requirements of practical design problems. An extended light source can be considered, and a smooth free-form refractive surface can be established by adding feedback to the design process for a point source. Moreover, the performance can be improved by iterating this feedback process. Illumination systems with a point source and an extended source are designed and analyzed, resulting in uniform illuminance distribution, which demonstrates the validity of the method. (C) 2015 Optical Society of America
引用
收藏
页码:E1 / E7
页数:7
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