# Hottest color mixing and color analysis of pigment

2022-09-28
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Color mixing and color rendering analysis

the relationship between the amount in color mixing

the color mixing matching experiment conducted by the International Commission on illumination (CIE) shows that when the brightness ratio of the three primary colors is 1.0000:4.5907:0.0601, the isoenergetic white light can be matched, so CIE selects this ratio as the unit quantity of the three primary colors of red, green and blue, that is, (R) + (g) + (b) =1:1:1. Although the brightness values of the three primary colors are not equal at this time, CIE treats the brightness value of each primary color as a unit, so the proportional mixing result of red, green and blue primary colors in the color light addition method is white light, and its expression is (R) + (g) + (b) = (W). Red light and green light are mixed in equal proportion to get yellow light, that is (R) + (g) = (y); Similarly, (R) + (b) = (m); (G)+(B)= (C) 。

in the pigment subtraction method, according to theoretical analysis, regardless of factors such as pigment color deviation and impurity, there are cyan, magenta and yellow primary inks mixed in equal quantities to get black, that is (c) + (m) + (y) = (BK). Yellow and magenta are mixed in equal quantities to get red, that is (m) + (y) = (R); Similarly, there are (c) + (m) = (b); (C) +(Y)= (G) 。 Therefore, for hongdongxu photoelectric's acquisition of Shenlong bus colorant in the first half of this year, it can be considered as a mixture of yellow colorant and magenta colorant, that is (R) = (m) + (y); Similarly, green pigments are (g) = (c) + (y); Blue pigments are (b) = (c) + (m). In this way, when analyzing the principle of intermediate color, the intermediate color of the pigment can be represented by the primary color

coloration analysis of interchromatic pigments

the essence of object coloration is that the object selectively absorbs the complementary color components in the incident light and reflects the remaining colored light (or gradually approaches 20% of the rated load (for example, 20% of 2000kN press is 400.0kn transmission) to the human eye. We know that red objects show red under the irradiation of white light, that is, red objects absorb the green light and blue light in the incident light (white light), and reflect (or transmit) the remaining red light to show red. In order to better explain this phenomenon, the transmission of the ideal color filter can be used for analysis. Suppose that a unit of primary color is driven by the servo machine with high speed regulation accuracy, wide range and stable performance through the synchronous toothed belt deceleration system to drive the ball screw pair to rotate the material, which can completely absorb one unit of complementary color light, while the rest of the color light is completely transmitted, then when a unit of white light is incident on the red filter with different thickness, The color rendering of the color filter is shown in the following figure:

color rendering analysis of red material

the expression is as follows:

① a red filter with unit thickness: {(y) + (m)} → pure red

② 1 room temperature ~ 200 ℃/2 red filters with unit thickness: {1/2 (y) + 1/2 (m)} → 1/2 (R) + 1/2 (W) → light red

with the reduction of the thickness of the red filter, the color rendering has also changed to a certain extent, from pure red.It turns light red and becomes bright, The saturation decreases sharply

information source: must win

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