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Explanation of terms used in LED lighting
14-01-22
Terms used in LED lighting -- how to explain? Now by the Shenzhen LED lamp manufacturers to answer your questions.
Color temperature:
In terms of absolute temperature K, is a standard blackbody heating, temperature to a certain degree by the red color when start - reddish - Orange - white - blue, gradually change, a light source and bold color at the same time, we will blackbody absolute temperature is called the color temperature of the light source.
Because of the correlated color temperature is in fact the blackbody radiation close to the color of light source, evaluation of the colour of light source performance value, compared to an exact color is not the same, so with the two light source color temperature, may still be some slight differences in color appearance. Only Feng color cannot understand source on object color capability, how to reproduce or objects in the light source color.
Different light environment correlated color temperature
The light source color temperature
The northern sky 8000-8500k
Cloudy 6500-7500k
Summer noon sunshine 5500k
4000-4600k metal halide lamp
The afternoon sun 4000K
The cool camp light 4000-5000k
3450-3750k high pressure mercury lamp
Warm camp light 2500-3000k
3000K halogen lamp
Tungsten filament lamp 2700k
1950-2250k high pressure sodium lamp
Candle light 2000K
The light source color temperature, color is different:
Color temperature is below 3300K, the partial red color with warm feeling; a steady atmosphere, warm feeling;
Color temperature in the 3000 - 6000K as the center, no obvious visual psychological effect on the tone, a smooth feeling; it is known as the "neutral" color temperature.
The color temperature of more than 6000K, the light bluer, give a person a kind of cool feeling;
A. color temperature and the brightness of high color temperature light, such as brightness is not high for people who have a Yin atmosphere; low color temperature light, brightness is too high will give people a warm feeling.
Comparison of B. color using two kinds of light color very light source in the same space, the contrast would level effect, color contrast, the brightness level at the same time, but also obtain the color level.
1, the low color temperature light irradiation, can make more bright red;
2, use in color temperature light irradiation, the blue has cool feeling;
3, the use of high color temperature of light source, so that the object has the feeling of cold.
Color:
The light source to the object itself color degree called color, the extent to which the real color; color light source is composed of a color index to indicate, it indicates that the object of quasi optical in light color based (Tai Yangguang) from lighting color, can comprehensively reflect the color of light source. Color light source color of high color performance is good, the colors we see is close to the natural color, color light source color low poor of the color, the color deviation we see more. International Commission on illumination CIE the color index of the sun is 100, the color rendering index of various light sources are not the same, such as: high pressure sodium lamp color rendering index Ra=23, fluorescent lamp color rendering index Ra=60~90.
Color two
True color: color correct expression of material would need to use the color rendering index (Ra) and high light, the value is close 100, color is the best.
The effect of color; to clearly emphasize specific color, the performance of the United States life can use additive color to enhance the color effect.
Effect of light:
An important index to measure the light energy is consumed, the luminous flux emitted by the source divided by the power of the light source. Unit: LM / w (lm/w).
Standard light source:
As we know, a large color lighting source objects on impact; different light source, a spectral energy distribution and color their own, in their present surface under the irradiation of color change.
In order to unify the understanding of color, first of all must be specified lighting standards; because the color of the light source and the light source color temperature are closely related, so CIE provides four standard illuminant color standard:
Standard illuminant A: represents full radiator in the light emitted from the 2856K (X0=109.87, Y0=100.00,
Z0=35.59);
Standard illuminant B: correlated color temperature is about direct sunlight 4874K (X0=99.09, Y0=100.00,
Z0=85.32);
Standard illuminant C: correlated color temperature represents approximately average daylight 6774K, cloudy sky daylight color approximation (X0=98.07, Y0=100.00, Z0=118.18);
Standard illuminant D65: correlated color temperature represent approximately 6504K fluorescent (X0=95.05, Y0=100.00,
Z0=108.91);
Standard illuminant D: other sunlight outside representative standard illuminant D65.
Standard illuminant CIE Regulations refers to the spectral energy distribution of specific provisions, is the light source color standard. It is not a must be provided directly by a light source, is not necessarily a light source to achieve. In order to achieve the standard lighting CIE prescribed body requirements, must also define a standard light source, the spectral energy distribution implementation standard illumination required. CIE recommends the following artificial light source to achieve the specified standard illumination:
Standard light source color temperature is 2856K A: inflation spiral tungsten filament lamp, the color yellow.
Standard light source color temperature is 4874K, B: from A source and cover type B D-G liquid filter. Color corresponds to the noon sun.
Standard light source color temperature is 6774K, C: from A source and cover type C D-G liquid
Color temperature:
In terms of absolute temperature K, is a standard blackbody heating, temperature to a certain degree by the red color when start - reddish - Orange - white - blue, gradually change, a light source and bold color at the same time, we will blackbody absolute temperature is called the color temperature of the light source.
Because of the correlated color temperature is in fact the blackbody radiation close to the color of light source, evaluation of the colour of light source performance value, compared to an exact color is not the same, so with the two light source color temperature, may still be some slight differences in color appearance. Only Feng color cannot understand source on object color capability, how to reproduce or objects in the light source color.
Different light environment correlated color temperature
The light source color temperature
The northern sky 8000-8500k
Cloudy 6500-7500k
Summer noon sunshine 5500k
4000-4600k metal halide lamp
The afternoon sun 4000K
The cool camp light 4000-5000k
3450-3750k high pressure mercury lamp
Warm camp light 2500-3000k
3000K halogen lamp
Tungsten filament lamp 2700k
1950-2250k high pressure sodium lamp
Candle light 2000K
The light source color temperature, color is different:
Color temperature is below 3300K, the partial red color with warm feeling; a steady atmosphere, warm feeling;
Color temperature in the 3000 - 6000K as the center, no obvious visual psychological effect on the tone, a smooth feeling; it is known as the "neutral" color temperature.
The color temperature of more than 6000K, the light bluer, give a person a kind of cool feeling;
A. color temperature and the brightness of high color temperature light, such as brightness is not high for people who have a Yin atmosphere; low color temperature light, brightness is too high will give people a warm feeling.
Comparison of B. color using two kinds of light color very light source in the same space, the contrast would level effect, color contrast, the brightness level at the same time, but also obtain the color level.
1, the low color temperature light irradiation, can make more bright red;
2, use in color temperature light irradiation, the blue has cool feeling;
3, the use of high color temperature of light source, so that the object has the feeling of cold.
Color:
The light source to the object itself color degree called color, the extent to which the real color; color light source is composed of a color index to indicate, it indicates that the object of quasi optical in light color based (Tai Yangguang) from lighting color, can comprehensively reflect the color of light source. Color light source color of high color performance is good, the colors we see is close to the natural color, color light source color low poor of the color, the color deviation we see more. International Commission on illumination CIE the color index of the sun is 100, the color rendering index of various light sources are not the same, such as: high pressure sodium lamp color rendering index Ra=23, fluorescent lamp color rendering index Ra=60~90.
Color two
True color: color correct expression of material would need to use the color rendering index (Ra) and high light, the value is close 100, color is the best.
The effect of color; to clearly emphasize specific color, the performance of the United States life can use additive color to enhance the color effect.
Effect of light:
An important index to measure the light energy is consumed, the luminous flux emitted by the source divided by the power of the light source. Unit: LM / w (lm/w).
Standard light source:
As we know, a large color lighting source objects on impact; different light source, a spectral energy distribution and color their own, in their present surface under the irradiation of color change.
In order to unify the understanding of color, first of all must be specified lighting standards; because the color of the light source and the light source color temperature are closely related, so CIE provides four standard illuminant color standard:
Standard illuminant A: represents full radiator in the light emitted from the 2856K (X0=109.87, Y0=100.00,
Z0=35.59);
Standard illuminant B: correlated color temperature is about direct sunlight 4874K (X0=99.09, Y0=100.00,
Z0=85.32);
Standard illuminant C: correlated color temperature represents approximately average daylight 6774K, cloudy sky daylight color approximation (X0=98.07, Y0=100.00, Z0=118.18);
Standard illuminant D65: correlated color temperature represent approximately 6504K fluorescent (X0=95.05, Y0=100.00,
Z0=108.91);
Standard illuminant D: other sunlight outside representative standard illuminant D65.
Standard illuminant CIE Regulations refers to the spectral energy distribution of specific provisions, is the light source color standard. It is not a must be provided directly by a light source, is not necessarily a light source to achieve. In order to achieve the standard lighting CIE prescribed body requirements, must also define a standard light source, the spectral energy distribution implementation standard illumination required. CIE recommends the following artificial light source to achieve the specified standard illumination:
Standard light source color temperature is 2856K A: inflation spiral tungsten filament lamp, the color yellow.
Standard light source color temperature is 4874K, B: from A source and cover type B D-G liquid filter. Color corresponds to the noon sun.
Standard light source color temperature is 6774K, C: from A source and cover type C D-G liquid
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