You do not know these commonly used terms, but also talk about what lighting?
2017-07-05
 
One light
Light is radiated to the human eye, the visual nerve into the light, that can be seen by the naked part of the spectrum. The wavelength of this type of ray is between 360 and 830 nm, which is only a very small part of the electromagnetic radiation spectrum.
Visible light: a part of the radiant energy emitted by the light source that produces visual radiant energy. Often referred to as "visible light".
Visible light wavelength: from 380nm ---- 780nm
UV wavelength: from 100nm --- 380nm, the naked eye is invisible.
Infrared wavelength: from 780nm --- 1mm, the naked eye is invisible.
 

 
Second, the luminous flux
Unit: lumen [lm], 1lm = 1cd · 1sr. Lumen is the luminous flux. The sum of the energy emitted by the light source and received by the human eye is the luminous flux.
 
Third, the light source efficiency
Unit: lumens per watt [lm / w]
Light efficiency refers to the energy conversion of light energy to the efficiency of light that every one kilowatt of electricity can be issued by the number of lumens, both light efficiency. The same time as the above-
Light efficiency is an important indicator of the luminous efficiency of light source.
 

 
Fourth, the luminous intensity
Unit: Candela [cd]
Light intensity, ie, luminous intensity, refers to the visible light in a specific direction of the angle (W) within the luminous flux. In general, the light is transmitted in different directions, and the intensity varies.
 
Five, illumination
Unit: lux [lx]
Illumination (E) is the ratio between the luminous flux and the area being illuminated. 1Lux means that 1Lm of luminous flux is evenly distributed in the area of ​​1 square meters on the plane of the brightness.
 

 
Sixth, brightness
Unit: candela / square meters [cd / m]
Brightness (L) is the light source (or irradiated surface) in a certain direction of the unit area of ​​light intensity. And in all the light measurement, the brightness can be described as the only direct cause of the eye as the amount of feeling friends.
 
Seven, color temperature
Unit: Kelvin [K]
The color temperature of the light source, when the light emitted by the light source and the "black body" at a certain temperature of the same radiation, the "black body" temperature is called the light source color temperature. The higher the temperature of the "blackbody", the more blue the composition in the spectrum, and the less the red component. For example, incandescent light color is warm white, the color temperature is expressed as 2700K, while the daylight color lamp color temperature that is 6000K.
 

 
Eight light color
Light color is actually color temperature. Roughly divided into three categories: warm <3300K, the middle color 3300K to 5000K, daylight color> 5000K. Since the composition of the spectrum in the light is different, the color rendering of the lamp may be different even if the light colors are the same. 
 
Nine, color
In principle, the artificial light should be the same as the natural light, so that the naked eye can correctly identify the color of things, of course, this depends on the location and purpose of the lighting. The degree to which the light source is presented for the color of the object is called color rendering. Usually called "color rendering index" (Ra). The smaller the color difference, the better the color rendering of the tested light source. A light source with a Ra value of 100 indicates that the color displayed by the thing in its light is consistent with the standard light source. The lower the Ra value, the worse the ability to restore the object's color.
 

 
Ten, lamp efficiency
Lamp efficiency (also known as light output coefficient) is an important measure of the energy efficiency of the lamp, which is the ratio between the luminous flux output by the lamp and the luminous flux of the light source output.
 
Eleven glare
Field of view there are very high brightness objects or a strong contrast, resulting in visual discomfort or cause visual function decline phenomenon, known as glare. Glare is the most important factor affecting the quality of lighting.
 

 
Twelve, strobe
Strobe effect of the two concepts, one is strobe: that is, the depth of light flux fluctuations, the greater the depth of the wave, the greater the depth of strobe. Second, the strobe effect: that is, electric light strobe in the human visual impact on the negative.
In this, Xiaobian mention one, on the current market in terms of lighting, OLED lighting is undoubtedly the best choice. With a natural light source, high light efficiency, suitable color temperature, adjustable light color, high color rendering, no glare, no flicker, etc., and  we look forward to OLED lighting .
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