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Perception of glare in relation to the CIE scale on Unified Glare Rating (UGR) and the impact of ambient light on both UGR and Subjective Glare Index Scales (SGI)

Ekim Olsson, Zeynep LU ; Govén, Tommy and Laike, Thorbjörn LU (2023) The 30th Quadrennial Session of the CIE
Abstract
Today the UGR tabular method according to CIE 117-195 and CIE 190-210, is practically the only one used for evaluation of glare in the lighting design process. It is important to investigate if the method is in line with the subjective perception of glare (SGI). The objective of the study was to investigate whether the perceived discomfort glare from commonly used lighting systems for workplaces is in agreement with the UGR calculation method currently used in lighting design to estimate the degree of discomfort glare. We have compared four different SGI with UGR in order to see how well they correlate. Another objective with the study was to investigate how important the room brightness is for the experience of discomfort glare.... (More)
Today the UGR tabular method according to CIE 117-195 and CIE 190-210, is practically the only one used for evaluation of glare in the lighting design process. It is important to investigate if the method is in line with the subjective perception of glare (SGI). The objective of the study was to investigate whether the perceived discomfort glare from commonly used lighting systems for workplaces is in agreement with the UGR calculation method currently used in lighting design to estimate the degree of discomfort glare. We have compared four different SGI with UGR in order to see how well they correlate. Another objective with the study was to investigate how important the room brightness is for the experience of discomfort glare. Therefore, the ambient light is taken into account in this study. Today the impact of ambient light is normally not considered in the calculation of discomfort glare when using the UGR tabular method. (Less)
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author
; and
organization
publishing date
type
Contribution to conference
publication status
unpublished
subject
keywords
Glare, Unified glare rating, Ambient light, LED, CIE, experimental design
conference name
The 30th Quadrennial Session of the CIE
conference location
Ljubljana, Slovenia
conference dates
2023-09-15 - 2023-09-23
project
Impact of glare in common LED-based lighting systems – An evaluation
language
English
LU publication?
yes
id
658b9c5c-8059-47f1-b13a-d24d01b7cd37
date added to LUP
2023-11-15 14:28:12
date last changed
2024-02-14 14:20:41
@misc{658b9c5c-8059-47f1-b13a-d24d01b7cd37,
  abstract     = {{Today the UGR tabular method according to CIE 117-195 and CIE 190-210, is practically the only one used for evaluation of glare in the lighting design process. It is important to investigate if the method is in line with the subjective perception of glare (SGI). The objective of the study was to investigate whether the perceived discomfort glare from commonly used lighting systems for workplaces is in agreement with the UGR calculation method currently used in lighting design to estimate the degree of discomfort glare. We have compared four different SGI with UGR in order to see how well they correlate. Another objective with the study was to investigate how important the room brightness is for the experience of discomfort glare. Therefore, the ambient light is taken into account in this study. Today the impact of ambient light is normally not considered in the calculation of discomfort glare when using the UGR tabular method.}},
  author       = {{Ekim Olsson, Zeynep and Govén, Tommy and Laike, Thorbjörn}},
  keywords     = {{Glare; Unified glare rating; Ambient light; LED; CIE; experimental design}},
  language     = {{eng}},
  title        = {{Perception of glare in relation to the CIE scale on Unified Glare Rating (UGR) and the impact of ambient light on both UGR and Subjective Glare Index Scales (SGI)}},
  year         = {{2023}},
}