Photoelectric integrating type color photometer based on combined LED light sources and measurement method thereof

Abstract

The invention discloses a photoelectric integrating type color photometer based on combined LED light sources and a measurement method thereof. The photoelectric integrating type color photometer based on the combined LED light source comprises an integrating sphere, the LED light resources and a detector, wherein the LED light resources are arranged on the inner wall on the central horizontal plane of the integrating sphere in an equal-angle mode, the detector is positioned on the inner wall of the integrating sphere, and a 8-degree included angle is formed by the integrating sphere and a normal direction of the surface of a material. By means of the photoelectric integrating type color photometer based on the combined LED light source, the LED combined light sources serve as measurement light sources, and spectral response of the color photometer is changed by regulating spectral distribution of the LED combined light sources. Due to the fact that no optical filter is utilized in the design of the photoelectric integrating type color photometer, color data of a sample under test under multiple standard light sources can be measured through the photoelectric integrating type color photometer, indication errors of instrument measurement are reduced, and good test repeatability is ensured. Therefore, the photoelectric integrating type color photometer based on the combined LED light sources has good application and popularization prospects.

Description

technical field [0001] The invention relates to the technical field of color measuring instruments, in particular to a photoelectric integral color measuring instrument based on a composite LED light source and a measuring method thereof. Background technique [0002] The color measuring instrument is widely used in the field of color management in plastics, printing, paint ink, textile and clothing industries, and can measure the color data of the tested sample. [0003] In the prior art means, the spectral response of the photoelectric integral colorimeter depends on the spectrum of the measured light source, the relative spectral sensitivity of the detector and the spectral transmittance of the filter. After the instrument light source and detector are selected, the spectral response of the instrument meets the Luther condition by matching the spectral transmittance of the optical filter. Since the optical filter realized by coating has a high requirement on the incident...

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Problems solved by technology

[0005] In view of the deficiencies in the prior art above, the purpose of the present invention is to provide a photoelectric integral colorimeter based on a composite LED light source and its measurement method, to solve the problem of using a halogen tungsten lamp or a xenon lamp in the existing photoelectric integral colorimeter. As a measurement light source, it is difficult to match the optical filter

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