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

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.

[1]  A Antal Haans,et al.  Light distribution in dynamic street lighting: Two experimental studies on its effects on perceived safety, prospect, concealment, and escape , 2012 .

[2]  A. Choi,et al.  Quantitative assessment methods for determining luminous environmental zones in Korea , 2016 .

[3]  Jan Wienold,et al.  Evaluation methods and development of a new glare prediction model for daylight environments with the use of CCD cameras , 2006 .

[4]  John D. Bullough,et al.  Headlamp Parameters and Glare , 2004 .

[5]  Jeong Tai Kim,et al.  A distribution chart of glare sensation over the whole visual field , 2010 .

[6]  B. Green,et al.  Derivation and evaluation of a semantic scale of oral sensation magnitude with apparent ratio properties , 1993 .

[7]  Gillian Isoardi,et al.  Post occupancy evaluations relating to discomfort glare : a study of green buildings in Brisbane , 2013 .

[8]  R. G. Hopkinson,et al.  Glare from daylighting in buildings. , 1972, Applied ergonomics.

[9]  C. L. Mulder,et al.  Saturated and efficient blue phosphorescent organic light emitting devices with Lambertian angular emission , 2007 .

[10]  L. M. Geerdinck,et al.  Discomfort glare perception of non-uniform light sources in an office setting , 2014 .

[11]  P. R. Tregenza,et al.  View and discomfort glare from windows , 2007 .

[12]  Geert Deconinck,et al.  Calculation of the Unified Glare Rating based on luminance maps for uniform and non-uniform light sources , 2015 .

[13]  J NACHMIAS,et al.  STUDY OF ABSOLUTE VISUAL DETECTION BY THE RATING-SCALE METHOD. , 1963, Journal of the Optical Society of America.

[14]  Toshie Iwata,et al.  Position Index for a glare source located below the line of vision , 1997 .

[15]  A. Wilkins,et al.  Lighting and discomfort in the classroom , 2009 .

[16]  Mehmedalp Tural,et al.  Luminance contrast analyses for low vision in a senior living facility: A proposal for an HDR image-based analysis tool , 2014 .

[17]  Hyun-Ji Kim,et al.  Experimental Evaluation of the Lighting Environment for Main Activities of the Residents in Living Room , 2013 .