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We often see the concept of color temperature, so what does the color temperature of LED lamps mean? Color temperature is a physical quantity used to define the color of light source in lighting optics. Let' s take a look at the characteristics and common sense of color temperature.

I. characteristics of color temperature of LED lamps

1. Characteristics of LED color temperature: low color temperature: when the color temperature is below 3300K, the light color is red, which gives a warm feeling; There is a cautious atmosphere and a warm feeling; When the light source with low color temperature is selected for illumination, the color of the object can be more gorgeous.

2. Characteristics of LED color temperature, medium color temperature: the color temperature is 3300-8000k as the center, people have no particularly obvious visual and psychological effect under this tone, and have a straightforward feeling; So it is called & quot; Neutral & quot; Color temperature. When the medium color temperature light source is selected to illuminate the object, the color of the object has a cool feeling.

3. Characteristics of LED color temperature: high color temperature: the color temperature exceeds 8000K, and the light color is blue, giving people a cool feeling. When the high color temperature light source is selected for illumination, the color of the object has a cold feeling,

II. Basic knowledge of LED color temperature

Definition of color temperature: the color of the light emitted by the light source and the color of the light radiated by the blackbody at a certain temperature. The temperature of the blackbody is called the color temperature of the light source.

Since the light declared by most lighting sources is generally referred to as white light, the color surface temperature or related color temperature of the light source is used to refer to the relative white degree of its light color, so as to quantify the light color performance of the light source. According to Max Planck' s theory, when a standard blackbody with complete absorption and radiation ability is heated, the temperature gradually increases and the luminosity changes accordingly; The blackbody curve on CIE color coordinates shows the process of blackbody from red orange red yellow yellow white white white blue white. The temperature when the blackbody is heated to the same or close to the light color as the light source is defined as the relevant color temperature of the light source, which is called the color temperature, with the positive temperature K (Kelvin, or Kelvin temperature) as the unit (k = ℃ + 273.15). Therefore, when the blackbody is heated to red, the temperature is about 527 ℃, i.e. 800K, and its temperature affects the change of light color.

The more blue the light color, the higher the color temperature; If it is red, the lower the color temperature is. The light color also changes with time in a day: 40 minutes after sunrise, the light color is yellow and the color temperature is about 3000K; The sun is white at noon, rising to 4800-5800k, and about 6500k at noon on cloudy days; Before sunset, the light color is red, and the color temperature drops to about 2200k. Because the related color temperature is actually the evaluation value of the light color performance of the light source when the blackbody radiation is close to the light color of the light source, which is not an accurate color comparison, the two light sources with the same color temperature value may still have a little difference in the light color appearance. It is impossible to know the color rendering ability of the light source to the object or the reproduction degree of the object color under the light source only by color temperature.

The color temperature of the light source is different, and the light color is also different. When the color temperature is below 3300K, there is a cautious atmosphere and a warm feeling; The color temperature is 3000-5000k as the center, with a straightforward feeling; When the color temperature is above 5000K, there is a cold feeling, and the environment is composed of different light colors of different light sources.

Article from: LED fluorescent tube manufacturer http://mushuren.cn/