Power (electrical power), indicates the energy quantity that the electrical devices consume unit of time. The unit of power is...
Goniophotometer is a test device to measure the light emitted from a light source with different angles. Goniophotometer word constituted...
Uniformity can be expressed by division of minimum bright level to average bright level in the bright field. It is...
Electrical potential between two points is called voltage. Potential difference between two points moves electrons in the connected circuit and,...
Fresnel lens is a special lens type using as condenser or light distributor. Generally, fresnel lens is thin sheet form,...
Flicker is the light flicker that occurs as a result of the brightness of light changes rapidly and repeatedly. The...
Filament is a kind of thin wire that produce light when it is heated. It is generally used in old...
Devices which make the electrical connection of a bulb and fixes the bulb is called lightbulb socket. By the lightbulb...
Optical material takes control of bright light comes from a light source and emit it softly is called diffuser. Diffusers...
Wavelength indicates the distance between repeating units of a waveform (2 peak points). Wavelength is shown by Greek letter (λ)...
CRI stands for Color Rendering Index. CRI is an important criterion of the visual performance of a light source. CRI...
CE mark indicates that a product complies with the European Union (EU) regulations and has the related health, safety, and...
LED chips coming from serial production to have some minor differences, such as light color, light output, and working voltage....
Devices that provide the proper voltage and current needed to operate gas discharge lamps such as fluorescent and HID are...
Maintenance factor occurred by the aging or pollution of the lamp. It is the multiplier that expresses the decrease in...
Chandelier is a decorative lighting element which contains more than one lamp. It is designed to mount on ceiling or...
Lighting unit, which contains one or more electrical light sources and all necessary parts for operation, is called fixture. Lamp,...