What is the color temperature of LED LAMPS
Color Temperature (abbreviated: Color Temp)
Color refers to: the type of light energy, the human eye perceived color change. The color temperature calculated based on Kelvin ( or called Kelvin ) as a unit, based on the blackbody radiation C 0 ° Kelvin = -273 ° C as the starting point calculated ( i.e. : K = ℃ +273.15), heating the black body , as the energy increases, it will enter the field of visible light ; e.g. , in the 2800 ° K, the same shade and the LED bulb , we say that the color temperature of LED lamp color temperature is 2800 ° K. visible areas from low to high color temperature is determined by the color temperature orange → yellow → red → yellow → white → blue process.
[LED entry] LED Color (Color Temperature)
More bluish light color, color temperature will be higher; reddish color temperature is lower. Day light painting light color which changes in tandem with time: 40 minutes after sunrise yellow light color, color temperature 3,000K; midday sun white, rose to 4,800-5,800K; cloudy noon approximately 6,500 K; before sunset light color reddish, color temperature reduced to 2,200 K. The correlated color temperature of the other light source is due to the fact that the correlated color temperature of the light source close to the color of blackbody radiation, the performance of the light source color evaluation value is not an accurate color contrast, the color temperature of the same value with the second light source, There may still be a little difference in the appearance of light and color. Color temperature alone cannot understand the source of the object color capabilities, or how to reproduce the color of an object under the light source.
Color temperature unit: Kelvin (Lord Kelvin 1824 ~ 1907), 19 century British physicist excellence. Formerly W. Thomson (William Thomson), he was born in Belfast in 1824, and died in Scotland Neisehuoer December 17, 1907. Since the installation of submarine cables active Atlantic, the British government closed in 1866 for his jazz, closed in 1892 after he was baron called Baron Kelvin, after he renamed Kelvin. After his death, in order to commemorate the great physicist, the Kelvin thermodynamic temperature Wending unit is now one of the seven basic units of the International System of Units.
The relationship between the color temperature and ambience
Color temperature is different, and then the light color is also different. Color temperature below 3300K has a solid atmosphere, warm feeling; color temperature 3000 - 5000K color temperature is in the middle, there is a refreshing feeling; color temperature above 5000K has cold feeling. Different light sources of different colors make the best environment.
Color temperature is the human eye’s feeling to light or white reflective luminous body, which is physics. Feeling comprehensive body of jurisprudence complex factors and psychology is also varying. Color on TV (emitters) or photography (reflectors) can be artificially way to change, for example, in photography we use 3200K white hot light (3200K), but we add a red filter on the lens filtered through a little red light that makes the photo look a little low color temperature; we can also reduce a little red (but how much less will affect the performance of normal red) on the TV to make the picture look a bit high color temperature.
The color temperature preferences are given from person to person, which saw the scene with our daily views, for example, the people who close to the equator, the average color temperature is seen daily in 11000K (8000K ( Twilight ) ~ 17000K ( noon ) ), it is more like a high color temperature ( looks real ) , on the contrary, at higher latitudes ( average color temperature of about 6000K) that people who prefer a low color temperature (5600K or 6500K), which means that if you are using a high- Color TV to the performance of the Arctic landscape , it seems to feel more cyan ; if you see a subtropical style TV with a low color temperature, you will feel a little reddish.
How to define TV or screen color? Average color temperature throughout the year because of the scenery in China between about 8000K ~ 9500K, so television productions are in the audience for the 9300K color temperature to photography. But Europe because usually we have a difference in color temperature and to the average color temperature of about 6000K as a reference throughout the year produced, so when we look at those foreign films, you will find the most suitable for viewing 5600K ~ 6500K. Of course, this difference will therefore make us feel a fierce sense of reddish color temperature.
The people who is Color black eyes will look at 9300K, which is white , but blue-eyed man with blue eyes looked at 6500K is bluish white, we Chinese people looked is yellowish .
Some characteristics of color temperature
1 in the high latitudes, the color temperature is high, bluish color seen.
2 at low latitudes, the color temperature is low, saw reddish color.
3 in one day, color temperature also changes. When the sun dipped, energy is (clouds, air) absorb more, so the color temperature will be lower. When direct to sunlight, less energy is absorbed, so the higher color temperature will be.
4. Windows sRGB color model is used as the standard color temperature of 6500 ° K, represent D65.
5 The morning color temperature is about 4400 ° K.
6 color temperatures on the mountain are at about 6000 ° K.