Light fixtures

Light fixtures

An assembly that is part of a buildings electrical system that produces and controls light. The lampholder secures and energizes the lamp connected to the power supply; the reflector controls how the light is distributed; ridged baffles at the bottom of the fixture reduce the intensity of the light; and the diffuser controls the quality of the light. Louvers redirect the emitted light and shield the light source from view at certain angles. Parabolic reflectors spread, focus, or otherwise redirect the light. Lenses are used to focus or disperse the emitted light. Types include recessed, semirecessed, surface-mounted, pendant-mounted, and track-mounted. Fixtures within a building consist of three basic types: recessed, when lamps are housed above the ceiling, and the lens is flush with the surface; surface-mounted, when fixtures are attached and project from the wall or ceiling; and pendant fixtures, which are suspended from the ceiling by a rod or chain, such as a chandelier.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
Until recently, light fixtures had to be designed around traditional light sources (e.g., incandescent, halogen and fluorescent lamps).
They often require the installation of shielded light fixtures, which emit light only downward.
“Electronic Photo Controls are ideal when installed with light fixtures with extended service lives such as the new LED and induction light fixtures,” says Intermatic Marketing Manager Jimmy Adjunta.
Sovella's high efficiency LED-integrated light fixtures are available in single and dual light options and can be easily attached to light balancer rails, shelves and other surfaces.
International Resource News-December 5, 2012--Evolucia to provide 171 110-watt Aimed Optics LED cobra head light fixtures to Bentley University(C)1994-2012 ENPublishing - http://www.enpublishing.co.uk
Abu Dhabi: Nearly Dh1.13 billion in street lighting costs for the capital will be saved over the next 20 years as new energy-efficient light fixtures replace the ones currently being used, senior municipality officials have announced.
"I was never taught in school how to determine what lighting fixtures would be appropriate in a specific room, how to circuit or switch the light fixtures to provide different lighting levels, or how to calculate lighting levels.
The luminaires will last up to three times longer and will consume less than half the amount of energy than conventional light fixtures and light sources only about 35 watts less than the amount of energy consumed by a standard table lamp.
Super Bright offers low profile LED light fixtures. According to the company, the LF Series light fixture is suitable for illuminating cabinets, under counters or other spaces requiring a bright, but low profile lighting solution.
"This payback period can be further reduced as the project qualifies for significant federal tax credits under the Energy Policy Act of 2005." In addition to hard dollar savings, the project benefits the environment by the elimination of: - 10, 205,652 pounds of Carbon Dioxide- 23,614 pounds of Sulfur Dioxide- 26,258 pounds of Nitric Oxides The project included the replacement of almost 2,000 existing 400w and 1000w metal halide light fixtures with a lesser number of linear high-bay fixtures using T5HO lamps and ballasts.
The project included the replacement of almost 2,000 existing 400w and 1000w metal halide light fixtures, with a lesser number of linear high-bay fixtures using T5HO lamps and ballasts.