Waveguide optical lighting color measurement probe

Abstract

The invention provides a waveguide optical lighting color measurement probe. A waveguide optical lighting mode serves as a main lighting mode of the probe. Patch LEDs serve as lighting light sources and are evenly installed on the circumference outside a color measurement instrument light sensing unit. The patch LEDs are connected with the incidence end of a light waveguide. A sample to be measured is placed at the emergence end of the light waveguide and evenly lighted through light emitted by the LED patch light sources, wherein the light is transmitted through the light waveguide in the measuring process. Reflected light of the sample in the vertical direction is collected to the light sensing unit and the chromatic value of the sample is measured through the light sensing unit. The color measurement probe has the largest advantages of being small in size, low in energy consumption, less in emitted heat, high in practicality, suitable for chromatic value measurement of liquid and dye samples and high in economic benefit and social benefit.

Description

technical field [0001] The invention relates to a waveguide optical illumination color measurement probe, which uses waveguide optical illumination as the main illumination mode, belongs to the accessory part of a chromaticity measuring instrument, and mainly relates to a color measurement probe of a color measurement instrument. Background technique [0002] At present, the probes of colorimeters mostly use direct light source as the main lighting method in the chromaticity measurement, and the lighting source is mostly tungsten-halogen lamp. For the illumination system with vertical incidence of the light source, the reflected light of the sample is collected by the integrating sphere, and the color coordinates of the sample to be tested are obtained after normalization; for the illumination system with oblique incidence of the light source, the reflected light or diffuse reflection light of the sample passes through a specific After the color filter, it is converged onto ...

AI Technical Summary

Problems solved by technology

Although tungsten-halogen lamps can provide the stable continuous spectrum required for chromaticity measurement, tungsten-halogen lamps are large in size and power, and will generate a lot of heat during normal operation, so it is often necessary to install corresponding heat dissipation devices, so that Significantly increased the volume and energy consumption of the colorimeter probe

On the other hand, the light emitted by the light source will also often affect the chromaticity measurement of the sample. If the light source is too strong or too weak, it will directly interfere with the chromaticity measurement of the sample.

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