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CIE x050-OP046 PDF

CIE x050-OP046 PDF

Name:
CIE x050-OP046 PDF

Published Date:
12/29/2023

Status:
Active

Description:

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)

Publisher:
Commission Internationale de L'Eclairage

Document status:
Active
Format:
Electronic (PDF)
Delivery time:
10 minutes
Delivery time (for Russian version):
200 business days
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$11.445
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Today the Unified Glare Rating (UGR) tabular method according to CIE 117-195 and CIE 190-210 is practically the only one used for evaluation of discomfort glare in the lighting design process but it is unknown if the method is in line with the subjective perception of glare (SGI). We investigated whether UGR calculation method currently used in lighting design is in agreement with the perceived discomfort glare from commonly used lighting systems for workplaces to estimate the degree of discomfort. Five different lighting scenarios were evaluated by 59 subjects with repeated and non-repeated experiments. Analyses indicated that commonly used SGI measurements were not consistent with UGR values and discomfort glare can better be evaluated with comfort and discomfort experiences. The knowledge contributes to understanding perceived discomfort glare and underlying factors affecting this phenomenon.


File Size : 1 file , 1 MB
Note : This product is unavailable in Ukraine, Russia, Belarus
Number of Pages : 11
Published : 12/29/2023

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