Open AccessLight intensity distribution optimization for tunnel lamps in different zones of a long tunnel
Author(s) -
Wei–Chih Lai,
Xianming Liu,
Weimin Chen,
Xiaohua Li,
Xingfu Cheng
Publication year - 2014
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.022952
Subject(s) - luminance , optics , light intensity , intensity (physics) , glare , computer science , environmental science , materials science , physics , layer (electronics) , composite material
The light distributions in different tunnel zones have different requirements in order to meet the driver's visual system. In this paper, the light intensity distributions of tunnel lamps in different zones of a long tunnel are optimized separately. A common nonlinear optimization approach is proposed to minimize the consuming power as well as satisfy the luminance and glare requirements both on the road surface and on the wall set by International Commission on Illumination (CIE). Compared with that of the reported linear optimization method, the optimization model can save energy from 11% to 57.6% under the same installation conditions.