The color temperature of LED lamp beads of light -emitting diode is the indicator of the most common quality of the light source spectrum. The color temperature is defined according to the absolute black body. When the radiation of the light source is exactly the same as the radiation of the absolute black body, the temperature of the black body is called the color temperature of the light source. The characteristics of low -color temperature sources are that in the energy distribution, red radiation is relatively more, usually called "warm light"; after the color temperature is increased, the proportion of blue radiation in the energy distribution is usually called "cold light".

The color temperature of some commonly used light sources is:

Standard candlelight is 1930K (Kelvin temperature unit);

The tungsten wire light is 2760-2900K;

The fluorescent lamp is 3000K;

The flash is 3800K;

The sunlight at noon is 5400K;

Electronic flash is 6000K;

The blue sky is 12000-18000K.

Generally defined, white temperature: 2700-3200K, Zhengbai: 4000-4500K, sunlight white: 6000-6500K cold white: 6500K or more