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This section provides an overview for spectrophotometers as well as their applications and principles. Also, please take a look at the list of 0 spectrophotometer manufacturers and their company rankings.
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Department of Chemistry, Graduate School of Science, Tohoku University (Master of Science)
As a display engineer, engaged in Seiko Epson Corporation, Sony Corporation, Japan Display Corporation, etc.
https://researchmap.jp/tanakachihiro
https://www.linkedin.com/in/chihiro-tanaka/
A spectrophotometer is a device that quantifies color. The human eye can also judge color, but it cannot make accurate judgments because it is a qualitative evaluation and because colors are seen differently by different people.
On the other hand, the color of a product is often one of the quality evaluation items. Therefore, spectrophotometers numerically evaluate color by quantifying brightness and the intensity of each color, such as red, blue, and green.
In addition, since the way colors appear changes depending on the way light hits an object, the distance from the light source and its intensity are also recorded when measuring with a spectrophotometer.
As the word "spectrophotometer" implies, it measures the intensity of different wavelengths of light. The device receives light that hits the surface of a sample from an external light source, such as sunlight or illumination, and outputs a result showing how the intensity and color of each wavelength appears. There are three types of spectrophotometers: 0°/45° spectrophotometers, integrating sphere spectrophotometers, and multi-angle spectrophotometers.
The 0°/45° spectrophotometer is the most common method of evaluating color when viewed from a single angle. This method is used for samples with smooth surfaces. The integrating sphere spectrophotometer collects and measures light diffused across the surface of a sample and is useful for samples with uneven surfaces or those that contain gloss. Multi-angle colorimeter is a method to evaluate color from various angles, and is used to evaluate products whose colors change depending on the angle from which they are viewed.
Spectrophotometers can also be used to calculate the conditions under which colors appear the same even under different light source conditions, making them suitable for evaluating how colors appear under various conditions.
Colorimeters, or colorimeters, are used for a variety of purposes, but here we will discuss two typical types of colorimeters: colorimeters (color difference meters) and spectrophotometers.
The L*a*b* color space (official name: CIE 1976 L*a*b*) established by the Commission Internationale de l'éclairage (CIE) is commonly used to quantify colors using colorimeters.
It is called L*a*b* (Elster-Aester-Biester) color space to distinguish it from the original Hunter Lab color space (official name: Hunter 1948 Lab), which was devised based on the human visual sense to make color differences as even as possible for human discrimination.
In L*a*b* color space, colors are represented by three axes: the L* axis for lightness, and the a* and b* axes for chromaticity (hue and saturation). Each axis is arranged as shown in Figure 1, with L* values ranging from 0 to 100, where L*=0 corresponds to the brightness of black (a state in which light is completely absorbed) and L*=100 corresponds to the brightness of white (100% reflectance) with perfect diffuse reflection. a* axis represents the red (+a*) to green (-a *) direction, while the b* axis represents the yellow (+b*) to blue (-b*) direction. In this case, in the a*b* plane, the direction from the origin to any coordinate corresponds to hue (color tone), and the distance from the origin to any coordinate corresponds to saturation (vividness). In other words, the farther outward the color is, the more vivid it is, and the farther inward the color is, the duller it is.
As mentioned above, the range of L* coordinates is defined as 0 to 100, but the range of a* and b* coordinates is not univocal. This is because the L*a*b* color space is a conversion of a master color space (such as CIE 1931 XYZ), and the values vary depending on the source color space.
In recent years, CIE DE2000, which has been improved to eliminate differences from human visual results in the CIE color space, has been introduced.
The color management method, which digitizes and manages colors by measuring spectral characteristics with high precision using spectrophotometers, expressing colors numerically using the L*a*b* color space, and using matching technology to match the color of the target product to a reference color, is becoming increasingly important in the future.
*Including some distributors, etc.
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118 products found - Page 2
118 products - Page 2
Konica Minolta Japan Co., Ltd.
870+ people viewing
Last viewed: 1 day ago
■Summary This measuring instrument is a "Two in One" model spectrophotometer that can measure color and gloss values simultaneously. It greatly c...
X -Light
850+ people viewing
■ MA-T12, MA-T6, and MA-5 QC are the highest portable multi-angle spectrometer in the market. It has a color imaging and a multi -angle spectroscop...
Konica Minolta Japan Co., Ltd.
660+ people viewing
Last viewed: 1 day ago
■Summary The CM-26d is a top-of-the-line integrating sphere D/8 type portable colorimeter that achieves the highest level of instrumental error and...
2 models listed
Konica Minolta Japan Co., Ltd.
1840+ people viewing
Last viewed: 1 hour ago
■Main uses Color management of resin parts, automobile interior parts, paint, glass, etc. ■Two in One allows you to measure the color and gloss of...
Asahiko Trading Co., Ltd.
390+ people viewing
Last viewed: 1 day ago
■Summary - Portable measuring instrument equipped with a full-color touch panel screen, rechargeable battery, and SD card. -Weight is reduced to 1....
X -Light
550+ people viewing
Top class concentration measurement function Looking for a device that can measure all elements of CMYK in the press room? Exact Basic Plus automa...
Murakami Color Technology Institute Co., Ltd.
500+ people viewing
■Stable monitoring for long periods of time during the color process is possible. This is a monitoring device for process control that can provide ...
X -Light
590+ people viewing
Last viewed: 19 hours ago
MA-T12, MA-T6, and MA-5 QC are the highest portable multi-angle spectrometer in the market. It has a color imaging and a multi -angle spectroscopic...
Asahiko Trading Co., Ltd.
600+ people viewing
Last viewed: 9 hours ago
■Summary ・SpectraPen LM510 is a handheld spectroradiometer ideal for research and agricultural use. -Visible light (340-790nm) version and near-in...
X -Light
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The bench -top accumulated ball -specific optical measurement meter CI7860, CI7800, and CI7600 reproduction of faithful colors with accurate proces...
4 models listed
Asahiko Trading Co., Ltd.
530+ people viewing
■Summary ・MK350S Premium is a handheld spectrometer equipped with multiple functions. - Equipped with a touch panel display and supports Japanese ...
Suncolor Co., Ltd.
450+ people viewing
Last viewed: 21 hours ago
■Improving brand loyalty and promoting sales using professional color matching solution ColorReaderPRO ColorReader, an ultra-compact and lightweigh...
Konica Minolta Japan Co., Ltd.
240+ people viewing
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■Summary ・This is an XY automatic color measurement stage that is equipped with a fluorescence spectrodensitometer FD-7/FD-5 to accurately and eff...
3 models listed
X -Light
380+ people viewing
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Optimal coloring tool for paper and film Portable spectromotization concentration / measuring meter EXACT ™ 2 Plus is the most powerful model. In a...
4 models listed
Suncolor Co., Ltd.
960+ people viewing
Last viewed: 4 hours ago
■Standard grade performance of a stationary spectrophotometer that is portable but can be used on a desk. ・Highest level of device compatibility ...
Murakami Color Technology Institute Co., Ltd.
580+ people viewing
Last viewed: 23 hours ago
The GCMA-11 type is a double-beam three-dimensional angle spectroscopy side color system newly developed for reflective liquid crystal display pane...
Suncolor Co., Ltd.
800+ people viewing
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■Highly reliable portable colorimeter The new Datacolor CHECK3 portable spectrophotometer continues the tradition of best-in-class colorimetric per...
X -Light
280+ people viewing
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Accurately measure flexible films and special materials Portable spectrometical concentration and measuring meter Exact ™ 2 XP measure cmyk and spo...
4 models listed
X -Light
430+ people viewing
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Portable spectrometical concentration and measuring meter EXACT ™ 2 have three models. Using enhanced accuracy and speed, unmatched non-contact vid...
4 models listed
Murakami Color Technology Institute Co., Ltd.
480+ people viewing
Last viewed: 1 day ago
■Continuous monitoring of film and sheet production using transmission type This is a transmission type spectral side color system that continuousl...
Murakami Color Technology Institute Co., Ltd.
520+ people viewing
Last viewed: 14 hours ago
Pearl mica paint and raster tiles appear to change color when the viewing direction or direction of light incidence changes. A variable angle spect...
Murakami Color Technology Institute Co., Ltd.
540+ people viewing
Last viewed: 1 day ago
Pearl mica paint and raster tiles appear to change color when the viewing direction or direction of light incidence changes. A variable angle spect...
Asahiko Trading Co., Ltd.
560+ people viewing
■Summary A high-precision spectroradiometer calibrated with a NIST-compliant standard light source. By combining with various accessories, it is po...
X -Light
410+ people viewing
Last viewed: 7 hours ago
Time is precious. Are you creating more than twice a week or calibrating digital printing presses? The “I1isis2”, a distributed lighting meter wit...
2 models listed
Pico Co., Ltd.
390+ people viewing
Last viewed: 3 hours ago
For stable LED brightness inspection The Feasa optical head was designed to stably test the brightness of LEDs. The rugged, compact design allows ...
Yagyu Shokai Co., Ltd.
270+ people viewing
■Features - Compatible with ISO standards M0, M1, M2, and M3. ・In addition to common measurement items, the standard can display color difference ...
Asahiko Trading Co., Ltd.
210+ people viewing
Last viewed: 13 hours ago
■Summary The system is particularly suited for testing and characterizing high-resolution LCDs, mini-LEDs, OLEDs, quantum dot displays, backlights,...
Asahiko Trading Co., Ltd.
240+ people viewing
Last viewed: 11 hours ago
■Summary UPRtek 2D Imaging Colorimeter is a system that measures two-dimensional images with a built-in spectral radiance meter and XYZ filter. In ...
