Recognize the RGB light of the Skin Analyzer
RGB is designed from the principle of color luminescence. In layman’s terms, its color mixing method is like red, green, and blue lights. When their lights overlap each other, the colors are mixed, but the brightness is equal to The sum of the brightness of the two, the more mixed the higher the brightness, that is, additive mixing.
For the superposition of red, green and blue lights, the brightest superposition area of the central three colors is white, and the characteristics of additive mixing: the more superposition, the brighter.
Each of the three color channels, red, green, and blue, is divided into 256 levels of brightness. At 0, the “light” is the weakest – it is turned off, and at 255, the “light” is the brightest. When the three-color grayscale values are the same, gray tones with different grayscale values are generated, that is, when the three-color grayscale is all 0, it is the darkest black tone; when the three-color grayscale is 255, it is the brightest white tone .
RGB colors are called additive colors because you create white by adding R, G, and B together (that is, all the light is reflected back to the eye). Additive colors are used in lighting, television and computer monitors. For example, displays produce color by emitting light from red, green, and blue phosphors. The vast majority of the visible spectrum can be represented as a mixture of red, green, and blue (RGB) light in varying proportions and intensities. When these colors overlap, cyan, magenta, and yellow are produced.
RGB lights are formed by the three primary colors combined to form an image. In addition, there are also blue LEDs with yellow phosphors, and ultraviolet LEDs with RGB phosphors. Generally speaking, both of them have their imaging principles.
Both white light LED and RGB LED have the same goal, and both hope to achieve the effect of white light, but one is directly presented as white light, and the other is formed by mixing red, green and blue.
Post time: Apr-21-2022
