Color difference control of spectrophotometer

What is Spectrophotometer?

Spectrophotometer is a color measuring instrument with excellent performance, wide use, and easy operation. This instrument is suitable for color detection and color difference control of complex products in industry, such as measuring the reflected and transmitted colors of objects, while also measuring the whiteness, chromaticity, and the most basic color difference between two objects. The spectrophotometer is designed to provide a 45 °/0 ° geometric viewing angle suitable for human eye observation. It displays the reflectance and transmittance of a single object in the visible light band of 300nm-700nm, and is connected to a computer through an interface to expand more functions.

At the beginning of the development of spectroscopic colorimeters, researchers generally consider configurations suitable for different industries, products, and measurement environments, including the selection of light sources (A, C, D65, D50, and so on), and a variety of color difference formulas to choose from. In addition, tolerance ranges can be set based on product qualification requirements, which can quickly detect product color differences, and is suitable for controlling color in large-scale industrial production.

Currently, in industrial production, spectroscopic colorimeters are mainly used in industries where color requirements are relatively strict and difficult to control, such as textiles, printing and dyeing, coatings, metallic paints, glass coatings, paint films, building materials, printing, and so on. Using spectroscopic colorimeters to quantitatively compare and analyze the color information of products can be readily understood. At the same time, connecting to a PC can clearly restore color information, providing the best guarantee for color transmission and reproduction.

The interior of the spectrophotometer contains an optical element that can divide optical dispersion. Spectroscopic colorimeters generally use prisms, gratings, interference filters, adjustable or discontinuous series of monochromatic light sources to achieve light splitting, and then analyze single color information based on the dispersion principle to achieve color digital. The spectrophotometer can ultimately display chromaticity information based on internally set chromaticity spaces and calculation formulas, and output it in digital form. In addition, a spectrophotometer can also analyze potential spectral data information based on colorimetric data.

Spectrophotometer is designed for data comparison and simulation of visual chromaticity, as well as an important auxiliary tool for computer color matching, which can help major manufacturers perfectly complete the analysis, processing, and monitoring of spectral and chromaticity information. In the use of spectroscopic colorimeters, a key data equation – the color tolerance equation – is involved. In fact, we usually refer to the tolerance range. In industrial batch production, there are tolerances to control the product and qualification, which is fast and reasonable.

To control the color difference of a product with a spectrophotometer, it is necessary to first measure the information of the standard sample product, and then obtain color difference data by comparing the measured sample color information.

In fact, color measurement and management are generally the same, except that spectroscopic colorimeters have a higher accuracy and a much faster measurement speed than ordinary colorimeters. They can measure both, with a measurement time of around 0.3 seconds. This application to color detection in batch industrial production can greatly improve the speed of color detection and production efficiency.

Benchtop Spectrophotometer (Reflectance and Transmittance) DSCD-920 adopts 7 inches touch screen, full wavelength range, Android operate system. Illumination : reflectance D/8° and transmittance D/0°(UV included / UV excluded), high accuracy for color measurement, large storage memory, PC software, because of above advantages, it is used in laboratory for color analysis and communication.

DSCD-920_Desktop Spectroradiometer