The Usefulness of Near-Field Goniophotometry Data to Assess Illuminances and Discomfort Glare in Indoor Lighting

被引:3
|
作者
Simonot, L. [1 ]
Reux, F. [2 ]
Carre, S. [3 ]
Martinsons, C. [4 ]
机构
[1] Univ Poitiers, Inst Pprime UPR 3346 CNRS, Futuroscope, France
[2] Univ Poitiers, ENSI Poitiers, Poitiers, France
[3] Ctr Sci & Tech Batiment, Div Acoust Vibrat Lighting & Electromagnet, Nantes, France
[4] Ctr Sci & Tech Batiment, St Martin dHeres, France
关键词
Discomfort glare; near-field goniophotometry; indoor lighting; lighting simulation; photometry; PHOTOMETRY;
D O I
10.1080/15502724.2021.1925129
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
In lighting simulations, a luminaire is usually modeled using a luminous intensity distribution emitted by a single-point source. This so-called far-field approach is valid as long as the dimensions of the luminaire are much smaller than the distance to the calculation surface. This assumption is generally not met in standard indoor lighting and may lead to significant errors in the prediction of illuminances and discomfort glare. This work describes a practical near-field approach based on splitting the luminaire into N point sources. The errors in relation to the near field (infinite value of N) are evaluated as a function of N. This approach generates a more accurate assessment of the Unified Glare Rating in the case of luminaires with non-uniform emission.
引用
收藏
页码:246 / 257
页数:12
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