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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-JJ
Source
IEEE Trans Ind Appl 2013 Sep-Oct; 49(5):1992-1999
NIOSHTIC No.
20043220
Abstract
This experiment investigated the effects of different machine-mounted area lighting technologies on visual performance in a simulated underground mine environment. The primary objective was to conduct a comparative evaluation of the lighting technologies based on the visual performance of 36 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), 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
Lighting; Lighting-systems; Underground-mining; Environmental-factors; Humans; Men; Hazards; Eyes; Eyesight; Age-factors; Mining-industry; Mining-equipment; Underground-mining; Visual-fields; Visual-perception; Light-source; Author Keywords: Machine lighting; mine illumination; mine safety; visual performance
Contact
Miguel A. Reyes, National Institute for Occupational Safety and Health, Pittsburgh, PA 15236
CODEN
ITIACR
Publication Date
20130901
Document Type
Journal Article
Email Address
MAReyes@cdc.gov
Fiscal Year
2013
NTIS Accession No.
NTIS Price
Identifying No.
M102013
Issue of Publication
5
ISSN
0093-9994
NIOSH Division
OMSHR
Priority Area
Mining
Source Name
IEEE Transactions on Industry Applications
State
PA
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