CATEGORIES

    Polychromator

    Overview Knowledge Terms
    The multicolor instrument decomposes light into different wavelengths through a spectral system, measuring the spectral data reflected or transmitted by the surface of an object to analyze color characteristics. In industries such as coatings and printing, it is used for color matching and quality control to ensure product color consistency.
    Selection
    When selecting a multichannel instrument, consider measurement accuracy, wavelength range, repeatability, sample adaptability, ease of operation, data interface compatibility, maintenance requirements, and cost. Match the instrument's performance to specific application scenarios, such as laboratories or production lines, to ensure it meets daily testing requirements.
    Type
    Measurement method
    Caliber
    light source
    integrating sphere
    Chromatic value repeability
    Measurement shape
    software
    Special features

    Terms

    Color matching software
    Spectrophotometer

    Articles

    Spectrophotometer measures ink spectral reflectance and opacity.
    This article introduces how to measure the hiding power of ink using a spectrophotometer. The instrument irradiates the ink sample, measures its reflectance within the visible light spectrum, and calculates the hiding power using the Kubelka-Munk model.
    The combination of hiding power chart paper and a spectrophotometer enables the digital evaluation of hiding power.
    This article introduces how to combine hiding power cards with spectrophotometers to achieve digital assessment of hiding power.
    Colorimeter evaluation of color difference in anodized coloring layers
    This article explains how colorimeters are used to evaluate color differences in anodized coloring layers. It describes how colorimeters convert colors into numerical values based on international standards and quantify color variations by calculating the color difference ΔE.
    A spectrophotometer uses digital language to describe colors, making color differences impossible to hide.
    A spectrophotometer measures the color of an object through spectral analysis, converting reflected light data into spectral curves. It then calculates chromaticity parameters such as L*a*b* based on international standards, achieving a digital representation of color.
    How to Interpret Color Difference Lab Values Measured by a Spectrophotometer? Save This Color Difference Judgment Standard Now!
    This article explains how spectrophotometers measure and evaluate color differences using the Lab color space. In the Lab values, L represents lightness, while a and b indicate the red-green and yellow-blue color biases. The color difference ΔE is calculated using a formula to quantify the variation between a sample and the standard.