- 2013-08-30 21:22:15
How to choose the color temperature for LED lights?
Because most of the light emitted by the light source are referred to as white light, the light source color temperature or correlated color temperature table is used to describe the extent of the light white hue to quantify the performance of the light source color. According to Max Planck's theory, a complete absorption capacity with standard blackbody radiation heating, the temperature gradually increased luminosity also changed; CIE color coordinates on the blackbody curve (Black body locus) displayed by the bold red - orange - - yellow - yellow - white - blue and white process. Bold appearance and heated to the same or to the light source color temperature when the light source is defined as the correlated color temperature of said color temperature, absolute temperature K (Kelvin or called Kelvin) for the unit (K = ℃ +273.15). Therefore, the bold red when heated to a temperature of about 527 ℃ ie 800K, other light color temperature changes.
The more bluish light color, color temperature higher; reddish the color temperature lower. Painted light of day light color tandem time: 40 minutes after sunrise yellow light color, color temperature 3,000 K; midday sun white, rose to 4,800-5,800 K; cloudy noon to approximately 6,500 K; before sunset light color reddish, color temperature and reduced paper 2,200 K. Other related color temperature of the light source, because the correlated color temperature of the blackbody radiation is in fact close to the light source color, the color of the light source's performance values, not a precise color contrast, the color temperature value with the same second light source, may still have a little light color appearance differences alone can not understand the color temperature of the light source color rendering capabilities of the object, or an object under the light source to reproduce color.
Different correlated color temperature of lighting conditions:
Metal halide lamp: 4000-4600k
Cool Flourescent light: 4000-5000k
High-pressure mercury lamp: 3450-3750k
Warm Flourescent light :2500-3000k
Candle light: 2000k
Different color temperature light source , light color is also different. Color temperature below 3300K with solid atmosphere , warm feeling ; color temperature of 3000 - 5000K color temperature for the middle , there is a refreshing feeling ; 5000K color temperature over a cold feeling. Different light sources of different color to make the best environment .
Color is the human eye to light or white reflectors feeling that this is physics. Comprehensive body science and psychology complex factors a feeling, also vary . Color TV ( light ) or photograph ( reflector ) is possible for the employer to change the way of , for example, in photography we use 3200K white hot light (3200K), but we added a red filter on the lens filtered through a little red light makes the photo look a little lower color temperature ; same token, we can also reduce a little red on TV ( but much less how much will affect the performance of normal red ) color temperature so that the screen looks a little higher .
Is the color temperature preferences vary from person , and this was our day to see the scene scenery about , for example, a person close to the equator , the average daily see the color temperature is 11000K (8000K ( dusk ) ~ 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 ; Instead If you go with a low color temperature of the TV subtropical style , you will feel a little reddish.
TV or monitor 's color temperature is how to define it ? Throughout the year because of the scenery in China is about average color temperature between 8000K ~ 9500K , so the television program production both in the audience a color temperature of 9300K to photography . But in Europe and America because usually we have a difference in color temperature and order throughout the year , the average color temperature of about 6000K for the production of reference , so we look at those foreign films , you will find the most suitable for viewing 5600K ~ 6500K . Of course, this difference will therefore feel that we see in Europe and America and shoved a computer or TV screen when you feel reddish color temperature , warm, some not adapt .
Color black eyes that people will look at 9300K is white , but blue eyes that looked bluish 6500K blue eyes looked at the white is our Chinese people looked yellowish
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