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T - Glossary of lighting terms |
| Glossary Index | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X Y Z |
T-LampTubular Lamp; may be incandescent, halogen or fluorescent. Task LightingLighting directed to a specific area or surface that provides illumination for visual tasks, such as reading, sewing or cooking. It can be provided by recessed and track lighting, portable lighting or pendant lamps. Task lighting should be free of distracting glare and should be bright enough to prevent eyestrain. Three-Way DimmerDimmer that works with a three-way switch for control from two locations; turns on/off and dims at the dimmer, but only turns on/off at the switch. Three-Way LampIncandescent lamp with two filaments that provides three levels of light when sequentially switched. Three-Way SwitchOperates a fixture from two locations. Also called a “three-pole switch” because it is connected to three wires; “hot” in, “switched” out and a “traveler” to the other three-way switch. Tiffany LightingBased on original designs by American Louis Comfort Tiffany, Tiffany lighting relies on cut stained glass and ornately detailed bases, often in bronze. Tiffany was heavily influenced by Japanese art forms in which nature was front and center. TiltThe upward inclination of a light source from a level horizontal position. TimerDevice that turns lights on and off at pre-programmed times. Tinted GlassTinted glass is clear glass with a pigment or color added. This produces color throughout the piece, which will not chip or peel. Also clear or opal glass with a thin film of colored glass or plastic coating. ToggleLever used for control as in the common toggle switch or toggle dimmer. TorchiereIndirect floor lamp that sends all, or most, of its light upward. Track ConnectorPart that joins sections of electrified track. Track LightingAny lighting system that utilizes individual lamps or lamp housing which operate off a track or strip mounted to the wall or ceiling. Track lighting can provide general, task or accent lighting all at once in a very flexible system. You can move, swivel, rotate and aim the individual fixtures in any direction along the track, giving you the flexibility to change your lighting scheme as the need arises. You can also hang chandelier and pendant lighting fixtures from some types of track. TransformerA device used to raise (step up) or lower (step down) the electric voltage. For example, many halogen ceiling fixtures require a transformer, most commonly hidden in the wall during installation, to function properly. Step down transformers reduce household voltage (120 volts) to low voltage used in accent and landscape lighting. Larger transformers reduce high voltage used for efficient power distribution to safe and flexible household voltage. Input voltage is on the primary tap; output voltage on the secondary tap. TrimSometimes the edge or visible part of a recessed downlight; as in “white trim”. Sometimes the finishing section of the recessed fiture; as in “housing and trim.” TrofferRecessed fluorescent fixture for use in a suspended ceiling; derived from the words “trough” and “coffer.” Tungsten-Halogen LampA gas filled tungsten incandescent lamp containing a certain amount of halogens that intensifies the light source. More commonly referred to as “Halogen” lighting. |
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