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Low Glare Illumination System.
NTIS: PB/84-207935 :88 pages
A low-glare illuminating system using fiber optics was developed for the Bureau of Mines. Fiber bundles transmit light from sources to luminaires. Light is from tungsten halogen lamps in two dichroic reflectors. Six lamps are housed together with a stepdown transformer in one enclosure. Three conceptual designs were made before development of the fiber optic concept. A fluorescent concept used two f8t5 lamps in a unique w-shaped reflector. The reflector gave the appearance of eight lamps. An incandescent concept used a rectangular solid plastic luminaire molded with a reflector and diffuse surface. A lamp enclosure was mounted on its end. The early fiber optic concept was changed for the final development. As finally produced, the luminaire had a lower profile and a curved underside for painting as a reflector. The top surface was abraded for diffusion. The lamp enclosure at first was for a single lamp. This was changed to six lamps in one enclosure for simplified wiring. Nonelectrical fiber bundles make the system one of minimum electrical damage vulnerability.
CP; Final Contract Report;
NTIS Accession No.
Mine Safety Appliances
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division