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A preliminary study of an evaluation method for discomfort glare due to light trespass.

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Title: A preliminary study of an evaluation method for discomfort glare due to light trespass.
Authors: Sim, Y. J.1, Kim, I. T.1, Choi, A. S.1 aschoi@sejong.ac.kr, Sung, M. K.1
Source: Lighting Research & Technology. Aug2017, Vol. 49 Issue 5, p632-650. 19p. 3 Color Photographs, 4 Diagrams, 8 Charts, 3 Graphs.
Subjects: Light pollution, Discomfort glare, Glare, Disability glare, Lighting & the environment
Abstract: Light pollution is an environmental issue of rapidly increasing concern. Among the various types of light pollution, a major issue in residential areas is discomfort glare due to light trespass. Discomfort glare makes seeing and sleeping in a room difficult. Typical discomfort glare evaluation methods include the Daylight Glare Index and the Unified Glare Rating. However, no evaluation method exists for discomfort glare from artificial lighting entering through a window at night, i.e. light trespass. Therefore, this study investigated the existing methods for evaluating discomfort glare and subjective evaluation methods related to the characteristics of light trespass. We also examined the possible application of lighting simulation software programs for light trespass evaluation. We then performed a subjective evaluation of discomfort glare due to light trespass, compared the experimental values to our calculated values, and finally suggested a modified formula for evaluating light trespass. [ABSTRACT FROM AUTHOR]
Copyright of Lighting Research & Technology is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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PubType: Academic Journal
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  Data: A preliminary study of an evaluation method for discomfort glare due to light trespass.
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  Data: <searchLink fieldCode="JN" term="%22Lighting+Research+%26+Technology%22">Lighting Research & Technology</searchLink>. Aug2017, Vol. 49 Issue 5, p632-650. 19p. 3 Color Photographs, 4 Diagrams, 8 Charts, 3 Graphs.
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  Data: <searchLink fieldCode="DE" term="%22Light+pollution%22">Light pollution</searchLink><br /><searchLink fieldCode="DE" term="%22Discomfort+glare%22">Discomfort glare</searchLink><br /><searchLink fieldCode="DE" term="%22Glare%22">Glare</searchLink><br /><searchLink fieldCode="DE" term="%22Disability+glare%22">Disability glare</searchLink><br /><searchLink fieldCode="DE" term="%22Lighting+%26+the+environment%22">Lighting & the environment</searchLink>
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  Data: Light pollution is an environmental issue of rapidly increasing concern. Among the various types of light pollution, a major issue in residential areas is discomfort glare due to light trespass. Discomfort glare makes seeing and sleeping in a room difficult. Typical discomfort glare evaluation methods include the Daylight Glare Index and the Unified Glare Rating. However, no evaluation method exists for discomfort glare from artificial lighting entering through a window at night, i.e. light trespass. Therefore, this study investigated the existing methods for evaluating discomfort glare and subjective evaluation methods related to the characteristics of light trespass. We also examined the possible application of lighting simulation software programs for light trespass evaluation. We then performed a subjective evaluation of discomfort glare due to light trespass, compared the experimental values to our calculated values, and finally suggested a modified formula for evaluating light trespass. [ABSTRACT FROM AUTHOR]
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  Group: Ab
  Data: <i>Copyright of Lighting Research & Technology is the property of Sage Publications, Ltd. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Text: English
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        Type: general
      – SubjectFull: Discomfort glare
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      – SubjectFull: Glare
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      – SubjectFull: Disability glare
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              Text: Aug2017
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