A freeform collimator lens design for the Natural Light Illumination System

被引：1
|
作者：
Tseng, W-C [1 ]
Whang, A. J-W [2 ]
Chen, Y-Y [2 ]
Chen, J-Z [3 ]
Yang, T-H [2 ]
Huang, T-C [3 ]
Chen, H-C [4 ]
机构：
[1] Natl Taiwan Univ Sci & Technol, Dept Elect & Comp Engn, Taipei, Taiwan
[2] Natl Taiwan Univ Sci & Technol, Grad Inst Color & Illuminat Technol, 43,Sect 4,Keelung Rd, Taipei 106, Taiwan
[3] Natl Taiwan Univ Sci & Technol, Grad Inst Electroopt Engn, Taipei, Taiwan
[4] Natl Taiwan Univ Sci & Technol, Grad Inst Appl Sci & Technol, Taipei, Taiwan
来源：
LIGHTING RESEARCH & TECHNOLOGY | 2020年 / 52卷 / 01期
关键词：
Compendex;
D O I：
10.1177/1477153519829802
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
This paper presents the design of a collimator lens for use with the Lightbrick that uses total internal reflection as well as convex and concave surfaces. The Lightbrick is a light collector for the Natural Light Illumination System. The collimator lens is constructed using freeform surfaces which can be calculated through geometric-optics. Verified by optical simulation, using the collimator lens can achieve 90.3% luminous flux within +/- 2 degrees, and optical efficiency improves by 48% in the collimator lens output. The collimator lens converges the light distribution of the Lightbrick and enhances the transmission efficiency of the Natural Light Illumination System.
引用
收藏
页码：141 / 150
页数：10
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