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The influence of color temperature of LED on brightness

Edit:Shenzhen ETON Automation Equipment Co.,LtdUpDate:Apr 17, 2018

What is the effect of the color temperature of a led light-emitting diode on brightness? We first need to know what color temperature is and what is the brightness?


The color temperature (colo(u)r temperature) is a measure of the light color of a light source and its unit is K (Kelvin). Color temperature has important applications in photography, video, and publishing. The color temperature of a light source is determined by comparing its color and theoretical thermal black body radiators. The Kelvin temperature when the thermal blackbody radiator matches the color of the light source is the color temperature of that light source and it is directly related to the Planck blackbody radiation law.


Luminous flux refers to the radiant power that can be perceived by the human eye. It is equal to the product of the radiant energy of a certain band of time and the relative viewing rate of the band. Since the relative viewing ratio of light of different wavelengths is different for the human eye, the light fluxes of different wavelengths are not equal when the radiant power is equal. We will often refer to him as brightness.


Therefore, our LED light-emitting diodes emit light from the 460nm excitation phosphor to produce light color K, from 1000-100000K according to the required deployment, often used from 2000K-3500K warm light 4000K-5500K is natural white 5500-6500K is a positive white light More than 6500 is cool white light. Because the relative viewing ratio of different wavelengths of light is different for human eyes, the luminous flux of light of different wavelengths is equal, and the luminous flux is not equal, which means that the same kind of material has the same color temperature brightness. different. For example, a 2835 bead is the brightest between 5500-6500K for 28-30lm, but when doing 3000K it is 26lm-28LM to over 6500 and then only to 26-28LM. The color temperature goes up the brightness is lower.


In addition to color temperature, there is color rendering, and the effect on brightness is also great. It is also the brightest between 5500-6500K which is 28-30lm, but when made into 80, it will become 26-28lm material and 3.