definition
strict definition
led lighting
Room lighting using semiconductor light-emitting diodes to convert electrical energy into light.
LED (light-emitting diode) lighting uses semiconductor diodes as a system for room lighting. Using semiconductors, electrons within an LED device recombine with electron holes to release photons (light). LED lighting is highly energy-efficient.
The semiconductor diode is the light source. This distinguishes LED lighting from an incandescent filament and from the mercury-vapor discharge used in fluorescent lighting.
The category describes the technology used to illuminate the room rather than a single fixture shape. The lamps can be arranged to suit the room without changing the light-emitting principle.
Related definitions
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fluorescent lighting
Fixed lighting in which electrically excited mercury vapor produces ultraviolet light that stimulates a phosphor coating. -
hanging incandescent lamps
Lights using electrically heated filaments which project or hang from the ceiling. -
incandescent wall lamps
Incandescent lighting fixtures mounted on or built into interior walls, using electrically heated filaments. -
no electric lighting
The absence of any electrical system available for installed or plug-in lighting. -
plugged-in appliances
Electric lighting without fixed installations, relying on movable lights plugged into sockets. -
recessed lighting
Incandescent lighting which is flush with or recessed above the ceiling plane. -
soffit lighting
Indirect lighting in which lamps are directed at planar surfaces such as walls and ceilings instead of the room itself. -
track lighting
Adjustable lamps attached to fixed wall or ceiling tracks, allowing changes in lighting arrangements.