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Colorimeter is a tool for comparing the depth of color. According to the optical law, when light passes through the colored solution, part of the light is absorbed, and the absorbed light and the color matter are directly proportional to the concentration. So the deeper the color is, the more colored matter is. If the thickness of the two solution is the same, the thicker one must be lighter. In other words, when the two color is the same, the thickness is inversely proportional to the thickness. The main purpose of the colorimeter is to determine and analyze the color, tone and color value of the material measured. If the colorimeter is connected with the computer, it can improve the ability of color analysis and processing, and users can find out all kinds of data to color matching according to the need from the color storage library of the microcomputer.
The principle of color subtraction is based on the principle of color subtraction. The optical system of the eye lens barrel Luo Weipeng colorimeter will light refraction into 90 degrees and the field of view can be divided into two parts and about observation, which is part of the observation sample color field; the other part is to observe the reference color (i.e. Lovibond color unit standard filter) visual field. Appropriate selection of filter combinations to achieve the best match with the color of the tested samples. The Luo Weipeng color filter value displayed by the instrument is the result of the measured sample.