The basic unit of electric current adopted under the System International d’Unites; “a typical household circuit carries 15 to 50 amps” Current (Amps) = Power (Watts) / Voltage (Volts)
An amplifier is used for long runs of low voltage RGB lights. After so many feet the controller looses its power and needs an amplifier to strengthen the signal.
lighting directed to emphasize a particular object or draw attention to a display item
Alternating current (AC)
An electric current that periodically reverses direction in a circuit
A device used with an electric-discharge lamp to obtain the necessary circuit conditions (voltage, current, and wave form) for starting and operating
Beam angle refers to the angle between the two planes of light where the intensity is at least 50% of the maximum intensity at center beam.
The part of the bulb that makes contact with electricity. The standard US and EU type is the E26/E27
Lighting that is used to illuminate the object from behind
the degree if width in which light emanates from a light source.
The luminous intensity as defined by the international metric standard (SI). The term, retained from the early days of lighting, defines a standard candle of a fixed size and composition as a basis for evaluating the intensity of other light sources.
Color Rendering Index (CRI)
The calculated rendered color of an object. The higher the CRI (based upon a 0-100 scale), the more natural the colors appear. Natural light from the sun has a CRI of 100. Common lighting sources have a large range of CRI. LED light CRI values generally range from 60(average) to 90(best). High CRI equates to sharper, crisper, more natural colored pictures while at the same time reducing glare.
Compact Fluorescent Lamp (CFL)
A CFL is a fluorescent light bulb that has been compressed and sometimes twisted into the size of a standard-issue incandescent light bulb. CFLs are designed to replace an incandescent lamp or bulb and fit into most existing light fixtures formerly used for incandescent bulbs. Modern CFLs are reported to last approximately six times longer and use less power compared to an equivalent incandescent bulb.
The color of uniformly illuminated objects described using three terms:
Hue: Describes the situation when the appearance of different colors is similar (e.g. matching blues and pinks).
Lightness: Describes a range of grayness between black and white.
Chroma: Describes the degree of departure from gray of the same lightness and increasing color (e.g. red, redder, pure red).
A measure of the color of a light source relative to a black body at a particular temperature expressed in degrees Kelvin (K). Incandescent lights have a low color temperature (approximately 2800K) and have a orange-yellowish tone; Cool White has a high color temperature (approximately 6000K) appears bluish. The popular fluorescent light is typically rated at 4100K (Natural White).
A device used to control the color on a color changing LED.
An optical element used to mix light rays to improve uniformity and disperse light in a wider beam
Often times they are built in to the Bulbs. Allowing them to dimm. In a Low Voltage Lighting Systems the dimmable driver allows the system to dimm on the DC side with a swith. Not to be confused with a Dimmer Controller; which dimms on the AC side and is paired with a driver. Dimmer Controllers can be RF IR or WIFI and are controller remotely.
A control that regulates light levels.
Refers to the LED inside of a bulb or fixture.
Electronics used to power illumination sources and convert voltage from AC to DC. In LED lighting the Driver takes the place of a ballast. Drivers can be inside the fixture/bulb or can be external in the case of a strip light. Low Voltage Lighting systems often require drivers. See the Drivers’ page to select one.
Field angle refers to the angle between the two planes of light where the intensity is 10% (or less) of the maximum intensity at center beam. This is sometimes referred to a ghosting or spill, it is not considered usable light. The type of lens used in the fixture will usually determine the amount of field angle or spill.
A complete lighting unit consisting of a lamp or lamps together with parts designed to distribute the light, position and protect the lamps, and connect the lamps to the power supply.
The sum of all lumens (lm) emitted by a source. (See Lumens for more information)
Full Matrix LED displays allow the user to combine the entire display’s pixels to produce larger characters and graphics.
Used to indicate the comparative color appearance of a light source when compared to a theoretical blackbody. (e.g. yellowish incandescent lamps are 3000K. Fluorescent Light sources range from 3000K to 7500K.).
A Light Emitting Diode (LED) is a solid-state semiconductor device that converts electrical energy directly into light. On its most basic level, the semiconductor is comprised of two regions. When voltage is applied and current begins to flow, the electrons move across one region into the other region. The process of an electron moving through the junction of the two regions releases energy. The dispersion of this energy produces light in the form of photons.
Since LED’s do not rely on replaceable bulbs, the LED Life refers to the number hours an LED can be used before needing to be replaced. Typically, LED life reaches 100,000 hours.
Low Voltage Lighting
System that uses less than 50-volt current (commonly 12-volt), instead of 110-120-volt, the standard household current. A transformer is used to convert the electrical power to the appropriate voltage. See Our Line of LED Modules, Showcase, and Strip Light series.
The unit of luminous flux in the International System (SI), equal to the amount of light given out through a solid angle by a source of one candela intensity radiating equally in all directions. Lumens is used to measure light bulbs as standalone light sources. Lighting fixtures are measured by lux output which is lumens per square meter.
The most commonly used measure of the energy efficiency of a light source. It is stated in lumens per watt (lm/W), indicating the amount of light a light source produces for each watt of electricity consumed.
Typically used to measure the light intensity produced by a lighting fixture. The higher the lux reading the more light the lighting fixture is producing over a given area. Known as lumens per square meter.