I believe that many people have some complications when buying LED lights. The parameters marked on the box are all eye-catching. In addition to being able to distinguish the most basic voltage and color temperature, other parameters are all confused. Today we will interpret it. Common parameter meaning of LED.
Power (the popular understanding is that the power is higher than the intensity index of the light source)
Refers to the amount of work consumed by an object in a unit of time, that is, power is a physical quantity that describes the speed of doing work. The amount of work is fixed, the shorter the time, the power value can be. The formula for finding power is power = work / time. Power characterizes the physical quantity of the work speed. The work accumulated in a unit of time is called power and is denoted by P. Usually unit time is measured in hours, ie W / h.
Color temperature (commonly understood that color temperature exceeds, the cooler the light color, otherwise the lower the color temperature, the warmer the light color). There are blogs specifically interpreted before. For details, see: Popularization of LED color temperature knowledge.
Color temperature is a physical quantity used in illumination optics to define the color of a light source. That is, when a black body is heated to a temperature where the color of the light emitted is the same as the color of the light emitted by a light source, the temperature at which the black body is heated is called the color temperature of the light source, or simply the color temperature. The unit is “K”.
Voltage, voltage (just match the appropriate LED light according to the input power)
Voltage (voltage) can also reduce the potential difference or potential difference, which is a physical quantity that reduces the energy difference caused by the different potentials in the electrostatic field per unit length. Its size is equal to the unit sine. The international unit system of voltage that moves from point A to point B due to the electric field force is volts (V, referred to as volts).
Power factor (power factor exceeds the power saving)
Power factor is the power equipment, power factor is an important technical data of the power system. Power factor is a factor of the efficiency of electrical equipment. The department has certain standard requirements for the power factor of the power unit.
Luminous efficiency (The higher the lumen value, the brighter the light.)
Lumen, the unit of luminous flux. A point light source with a luminous intensity of 1 candela (cd) emits a luminous flux of “1 lumen” within the unit solid angle (1 spherical degree), the English abbreviation (m).
Base (The general lamp holder is E27.).
CRI CRI is the color rendering index. The color rendering index refers to the ability of the light source to restore the color of the object. The higher the color rendering index, the more realistic the color reproduction. The color rendering index is expressed by Ra. The larger the Ra value, the better the color rendering of the light source. (The color rendering index under sunlight is 100, so the closer Ra is to 100, the more realistic the object displayed under the light).