Home » News & Blog
Products

what is color temperature of LED lights ?

what is color temperature of LED lights ?

Because most of the light emitted are collectively referred to as white, so color table correlated color temperature or temperature of the light source that is used to refer to the extent of its light hue dialogue, in order to quantify the performance of light and color of the light source. According to the theory of Max Planck, will be completely absorbed with a standard capacity of blackbody radiation heating, the temperature gradually increased luminosity has changed; blackbody curve (Black body locus) CIE color coordinates displayed on the blackbody from red - orange - - yellow - yellow - white - blue and white process. Blackbody warmed to appear the same or close to the light source when the light color temperature, defined as the correlated color temperature of the light source, called the color temperature to absolute temperature K (Kelvin or called Kelvin) units (K = ℃ + 273.15). Thus, in bold red heating to a temperature of about 527 ℃ namely 800K, other light color temperature change.


More bluish light color, color temperature higher; reddish color temperature is the lower. One day a light color which draw light tandem time: 40 minutes after sunrise light color yellow, the color temperature of 3,000K; white midday sun, rose to 4,800-5,800K; cloudy midday then about 6,500K ; before sunset light red color cast, color temperature was further reduced to paper 2,200K. Correlated color temperature of the other light sources, due to the correlated color temperature blackbody radiation actually is closer to the light source when the color of the light source color performance evaluation value is not an accurate color contrast, so with the same color temperature of the second light source, There may still be a little difference in the appearance of light and color. color alone can not understand the source of the object's color capabilities, or how to reproduce the color of an object under the light source.


Correlated color temperature of the light source in different environments

Northern skies 8000-8500k

Cloudy 6500-7500k

The midday summer sun 5500k

Metal halide lamps 4000-4600k

Afternoon sunlight 4000k

Cool camp light 4000-5000k

High pressure mercury lamps 3450-3750k

Camp 2500-3000k warm light

Halogen 3000k

Tungsten 2700k

HPS 1950-2250k

Candle light 2000k

Different color temperature of the light source, the light colors are different. Color temperature below 3300K has a stable atmosphere, warm feeling; color temperature 3000--5000K intermediate color temperature, there is a refreshing feeling; feeling cold color temperature of 5000K or more. Different color different light sources make the best environment.

Color temperature is the human eye to light emitter or white reflectors, which is physics. A feeling integrated complex factors Neo body and psychology, also vary. Color on the TV (phosphor) or photography (reflectors) is a way to change employers, for example, in photography we use 3200K white hot light (3200K), but we add a red filter over the lens little red light was filtered through a low color temperature make photo look one o'clock; the same token, we can also be reduced a little red (but minus the number of too much will affect the performance of normal red) on the TV so that the screen looks a little higher color temperature.

On the color temperature preferences because person to person, which saw the scene with our daily views about, for example, close to the equator, the average color temperature is seen daily in 11000K (8000K (evening) ~ 17000K (noon)), it is more like a high color temperature (looks real), on the contrary, at higher latitudes (average color temperature of about 6000K) who would prefer a low color temperature (5600K or 6500K), which means that if you are using a high TV color temperature to the performance of the Arctic landscape seems to feel partial green; the contrary, if you are to see low color temperature subtropical style with a TV, you'll feel a little reddish.

TV or color temperature of the display is how to define it? Because the scenery throughout the year in China's average color temperature between about 8000K ~ 9500K, so television programs are produced in the audience with a color temperature of 9300K to photography. But Europe because usually we have differences in color temperature and at an average of about 6000K color temperature throughout the year of the reference made, so when we look at those foreign films, you will find the most suitable watch 5600K ~ 6500K. Of course, this difference will therefore make us feel a fierce sense of reddish color temperature, warm see the computer or TV screen when Europe and America, some do not adapt.

It is the color temperature of 9300K black eyes who look white, but blue-eyed man looked bluish 6500K is blue-eyed white people saw we Chinese people read is yellowish.