Long long ago, the traditional light source era, when it comes to color temperature, everyone only cares about "yellow light, white light", and does not care much about the problem of light color deviation. Anyway, the color temperature of the traditional light source is just a few. If you choose one, you will not go anywhere. In the era of LEDs , we found that the color of LEDs is different. Even the same batch of lamp beads, there may be deviations to strange, red, green and green lively ~~ In view of this chaos, there is a conscience LED Lighting factory promises to customers: "Our lamps, color temperature deviation within ±150K!", there are also design companies in the product selection, the specification notes: "Bead color temperature requirements deviation Within ±150K". This 150K is based on the conclusion of the traditional literature: "The color temperature deviation is within ±150K, which is difficult for the human eye to detect." They believe that by setting a color temperature of "±150K or less", it is possible to avoid red, green and green things. In fact, the pattern Tucson broke... The color temperature is really "not so simple"... To give an example, in the aging room of this factory, I saw two sets of light bars with distinct light colors. One group was normally warm white and the other group was obviously greenish. As shown in the figure, can you find the difference between the two light bars? One red and one green, is there wood? According to the above statement, the human eye sees a clear difference, and the color temperature difference is definitely higher than 150K, right? I took out the "artifact" from the bag - the miniature intelligent spectrum tester, and measured them separately. The result is this... did you see? The two light sources that look completely different from the human eye, the "correlated color temperature" is only 20K apart! Do you really think that... the color on the right is 20K higher, is it seen by you? SHENZHEN CHONDEKUAI TECHNOLOGY CO.LTD , https://www.szfourinone.com