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Evaluation of visual performance when using incandescent, fluorescent, and LED machine lights in mesopic conditions.

Authors
Reyes-MA; Gallagher-S; Sammarco-J
Source
IAS '09: Conference Record of the 2009 IEEE Industry Applications Conference: Forty-fourth IAS Annual Meeting, October 4-8, 2009, Houston, Texas. Piscataway, NJ: Institute of Electrical and Electronics Engineers, 2009 Oct; :1-7
NIOSHTIC No.
20036179
Abstract
This experiment investigated the effects of different machine mounted area lighting technologies on visual performance. The primary objective was to conduct a comparative evaluation of the lighting technologies based on the visual performance of thirty-six human subjects in a simulated underground mine environment. Incandescent (Incand), fluorescent (Fluor), and light-emitting diode (LED) technologies were used to create four lighting combinations. Visual performance was quantified for the detection of movement in the peripheral field of view and the identification of ground hazards. Measurements were made of the speed [response time measured in milliseconds (ms)], the accuracy (the number of targets and objects missed), and the subjective discomfort rating of the glare experienced for each lighting combination. A secondary objective explored the effects of aging on visual performance. The results indicate that lighting combinations which consisted of LED area lights significantly improved visual performance for the detection of hazards found in the peripheral field of view, as well as those found on the ground. They furthermore, indicate that age plays a significant role in visual performance.
Keywords
Mining-industry; Mining-equipment; Underground-mining; Visual-fields; Visual-perception; Light-source; Lighting; Author Keywords: mine illumination; visual performance; machine lighting; mine safety
Publication Date
20091004
Document Type
Conference/Symposia Proceedings
Fiscal Year
2010
NTIS Accession No.
NTIS Price
ISBN No.
9781424434763
ISSN
0197-2618
NIOSH Division
PRL
Priority Area
Mining
Source Name
IAS '09: Conference Record of the 2009 IEEE Industry Applications Conference: Forty-fourth IAS Annual Meeting, October 4-8, 2009, Houston, Texas
State
PA; TX; NJ
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