Colour Temperature When the chromaticity of a light source is the same as that of a blackbody at a certain temperature, the absolute temperature of the blackbody is the color temperature of the light source.

Unified Glare Rating (UGR) A psychometric parameter used by The Commission Internationale de L'Eclairage (CIE) to measure the subjective response of people’s eye discomfort of light emitted by a lighting device in a visual environment

Stroboscopic Effect In the light irradiation of certain frequency change, observing the different movement of objects  from its actual movement. Light Emitting Diode Lamp A semiconductor device that emits light from an electroluminescent solid as

General Lighting Also known as "background lighting" or "ambient lighting", is the basis of a lighting plan, refers to the non-directional lighting full of a room, providing a generally adequate lighting foundation for all