Uploaded for Lighting Fixtures by Albert Barajas at Thursday, November 09 2017 22:14:36
Lighting fixtures come in a wide variety of styles for various functions. The most important functions are as a holder for the light source, to provide directed light and to avoid visual glare. Some are very plain and functional, while some are pieces of art in themselves. Nearly any material can be used, so long as it can tolerate the excess heat and is in keeping with safety codes.
A pendant light, sometimes called a drop or suspender, is a lone light fixture that hangs from the ceiling usually suspended by a cord, chain, or metal rod. Pendant lights are often used in multiples, hung in a straight line over kitchen countertops and dinette sets or sometimes in bathrooms. Pendants come in a huge variety of sizes and vary in materials from metal to glass or concrete and plastic. Many modern pendants are energy-saving low voltage models and some use halogen or fluorescent bulbs. A billiard or island light is a longer pendant fixture, usually with long fluorescent or multiple incandescent bulbs, used over kitchen islands and billiard tables. They are sometimes considered a type of chandelier. It is a key component to understanding Architectural lighting design and sometimes associated with interior design.
An important property of light fixtures is the luminous efficacy or wall-plug efficiency, meaning the amount of usable light emanating from the fixture per used energy, usually measured in lumen per watt. A fixture using replaceable light sources can also have its efficiency quoted as the percentage of light passed from the "bulb" to the surroundings.