Glare and visual comfort assessment for LED office lighting systems

Thumbnail Image

URL

Journal Title

Journal ISSN

Volume Title

School of Electrical Engineering | Master's thesis
Checking the digitized thesis and permission for publishing
Instructions for the author

Authors

Date

2012

Department

Elektroniikan laitos

Major/Subject

Valaistustekniikka

Mcode

S-118

Degree programme

Language

en

Pages

46 s. + liitt. 4

Series

Abstract

The study presented in this thesis aims at identifying different elements of lighting visual comfort. It starts by identifying the elements of sufficiency, pleasantness and colour rendering before it expands on glare. This study is reflected on LED luminaires, and based on the previous experiments of Kasahara and Tashiro; general hypotheses were made on limiting discomfort glare. Further to that, a visual comfort experiment was performed in a simulated office room to confirm those hypotheses alongside presenting general suggestions on how LED luminaires should be set up in office environments for the comfort of the employees. Another goal for this thesis is to test the current standards for office lighting on real life office employee subjects. In this regard, the guidelines for lighting design set in the latest European standard EN 12464-1 (issued June, 2011) were met in an office simulation experiment, and their settings were compared to those of the subjects' preferences. Taken into consideration, were the impacts of the office room lighting on the pleasantness of the scene, and how subjects perceive their performance and stress in the tested lighting conditions. The results of this experiment and research are presented, and general conclusions are deducted for the sake of achieving a better LED-lit office environment.

Description

Supervisor

Halonen, Liisa

Thesis advisor

Tetri, Eino

Keywords

visual comfort, discomfort glare, glare from LED, office environments, user test

Other note

Citation

Permanent link to this item

https://urn.fi/URN:NBN:fi:aalto-2020122859288

Collections

[dipl] Sähkötekniikan korkeakoulu / ELEC