What's the color index in the LED lamp, please? Is the greater the value, the better the quality?
The color rendering index of a ed lamp is the degree to which an LED light source is rendered to an object, called a color rendering. For LED lamps, the average color index of the three primary colors is high, and the color index of the blue and yellow phosphors is not as high as the three primary colors of the LED.
The color rendering index is not unique to LED. It is a parameter of all light sources. It is the ability to restore colors. Daylight color index is 100, incandescent lamp is also 100, energy-saving lamps are 80-90, LED is 70-90. The lower the color rendering index, the more distorted the color appears to the naked eye.
The process of calculating the color rendering index of a light source is as follows:1, calculate its color coordinates u, V and color temperature, and find it with the same color temperature or close to the standard light source (5000K and below, blackbody, 5000K or more typical sunlight).2. Calculate the color coordinates of the reflected light of the light source on 15 colors, and then count as WI*, UI*, VI*.3, look-up table, or calculate the standard light source W0I*, U0I*, VOI*.4, EI= ((WOI*-WI*) ^2 + ((WOI*-WI*) ^2 + ((WOI*-WI*) ^2) ^1/25, RI=100 - 4.6EI.6, the average value of the first eight RI is the color rendering index Ra.The lower the color rendering index, the more distorted the color appears to the naked eye.
