Headlamp glare is an issue that has grown in terms of public awareness over the past decade. Developments in light source technologies and optical design have resulted in headlamp systems with higher efficiency (and thus the ability to produce higher illuminances), as well as differing spectral power distributions and smaller sizes than conventional halogen headlamps. This report describes research to investigate and quantify the impact of glare illuminance, glare spectral power distribution, and glare source size on peripheral detection of small targets in the field. Peripheral visibility is an area that heretofore has not been extensively studied in the context of headlamp glare, although peripheral vision is important for driving. The impact of glare can be segregated into two areas: the reduction of visibility caused by scattered light in the eye (disability glare), and the sensations of discomfort caused by a glare source in the field of view (discomfort glare). These phenomena often, but do not necessarily always, occur simultaneously.


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    Title :

    Investigation of Headlamp Glare: Intensity, Spectrum, and Size


    Publication date :

    2003


    Size :

    64 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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