2008年11月10日星期一

Light fixture


A light fixture is an electrical device used to create artificial light or illumination. A luminaire is a lighting fixture complete with the light source or lamp, the reflector for directing the light, an aperture (with or without a lens), the outer shell or housing for lamp alignment and protection, an electrical ballast, if required, and connection to a power source. A wide variety of special light fixtures are created for use in the automotive industry, aerospace, marine and medicine.
Light fixtures are classified by how the fixture is installed, the light function or lamp type.

Free-standing or portable — table lamps, standard lamps and office task lights. Note: The use of "lamp" to describe light fixtures is different from its use to describe electrical components - see Lamp (electrical component).
Recessed light — the protective housing is concealed behind a ceiling or wall, leaving only the fixture itself exposed. The ceiling-mounted version is often called a "downlight".
"Cans" with a variety of lamps — this term is jargon for inexpensive downlighting products that are recessed into the ceiling. The name comes from the shape of the housing. The term "pot lights" is often used in Canada and parts of the US.
Troffer light — recessed fluorescent lights (the word comes from the combination of trough & coffer)
Surface-mounted light — the finished housing is exposed; not "flush" with surface
Chandelier

Cartridge Hp Remanufactured Toner


Continuous Ink Supply System


Bulk Inkjet Printer Ink


Ink Cartridge Refill Machine


compatible xerox toner cartridge


compatible samsung toner cartridge


compatible hp ink cartridges


time and attendance terminal


fingerprint time and attendance


credit card size calculator


christmas inflatable snow globe


airblown inflatable snow globe


lcd car dvd screen


Remote Control Laser Pointer


LCD 7 Touch Screen


Mobile Phone LCD Screen


Mobile Phone Touch Screen


motorized in dash screen


cast iron fireplace screen


key chain laser pointer

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