The three primary colors refer to the three colors of red, green and blue. The human eye is most sensitive to these three colors, and most of the colors are produced by combining these three colors in different proportions. Then let me talk about the two ways to get white light:
1) RGB is white light obtained by mixing three primary colors, or single color mixing to generate white light;
2) White light is generated by exciting the special phosphor coating from the blue LED;
The so-called blue LED excitation phosphor to generate white light technology, to put it simply, the blue chip emits a phosphor coating with a wavelength of about 450-455nm to convert it into the visible spectrum and replace it with visible white light. Blue LEDs are characterized by coating thickness requirements and design techniques. The increase or decrease of coating thickness has a great impact on the generation of visible spectrum. When the thickness increases, the visible spectrum tends to yellow.
The so-called blue LED excitation phosphor to generate white light technology, to put it simply, the blue chip emits a phosphor coating with a wavelength of about 450-455nm to convert it into the visible spectrum and replace it with visible white light. Blue LEDs are characterized by coating thickness requirements and design techniques. The increase or decrease of coating thickness has a great impact on the generation of visible spectrum. When the thickness increases, the visible spectrum tends to yellow.
First, we need to test the light quality of the white light LED. There is a very simple way. You only need a piece of white paper and stick it on top of the LED lamp beads to see if there is any yellow light along the wide angle.
In addition to the design of the three primary colors and blue LED technology, for the research and development of the light color, the secondary optical design scheme, especially the lens scheme, is aimed at the phenomenon of color separation when processing some special light types and small angles. The design principle of the secondary optical lens is to improve the secondary optical device to reduce the problem of color separation of the LED spectral distribution on its special surface mixing. From the initial simple matte surface to the race grain surface, to the current complex RZ mixed smooth surface processing technology.
Compared with the traditional matte pattern surface technology where the light path is uncontrollable, the RZ mixed surface treatment technology maximizes the uniformity of light color, and has fast efficiency and high controllability.
According to industry insiders, at present, it can guarantee that the light mixing effect does not exceed 70%, and the efficiency of optical equipment made with the new patented light mixing technology is increased by 90%.
The research on the original light LED technology is still in progress. In addition to the breakthrough surface texture design in the new RZ mixed light surface treatment technology, the original light of the LED obtained after the TRI optical design must be reprocessed. In addition to the inability to change the original TRI design optical application angle, it can improve the effective high optical efficiency and ensure the quality of the original light of the LED. At present, this light mixing surface treatment technology still needs to be developed and utilized.