All Categories
History
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.
Table of Contents
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.
Sort by Features
Number of Employees
Newly Established Company
Company with a History
128 products found
128 products
Konica Minolta Japan Co., Ltd.
340+ people viewing
Last viewed: 5 hours ago
Fast Response
■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...
Konica Minolta Japan Co., Ltd.
430+ people viewing
Last viewed: 33 minutes ago
Fast Response
■Shape that fits firmly in your hand By locating the center of gravity around the measuring instrument body, wobbling during measurement is suppres...
2 models listed
X -Light
610+ people viewing
Last viewed: 47 minutes ago
Very Fast Response
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.
220+ people viewing
Last viewed: 12 hours ago
Fast Response
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.
130+ people viewing
Last viewed: 19 minutes ago
Standard Response
■Highly reliable portable colorimeter The new Datacolor CHECK3 portable spectrophotometer continues the tradition of best-in-class colorimetric per...
X -Light
510+ people viewing
Last viewed: 1 day ago
Very Fast Response
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
Konica Minolta Japan Co., Ltd.
440+ people viewing
Last viewed: 3 hours ago
Fast Response
■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.
260+ people viewing
Last viewed: 3 hours ago
Fast Response
■Summary ・This measuring instrument is a 6-angle multi-angle model spectrophotometer that exhibits outstanding power in automotive exterior measur...
Murakami Color Technology Institute Co., Ltd.
200+ people viewing
Last viewed: 12 hours ago
Fast Response
Pearl mica paint and raster tiles appear to change color when the viewing direction or direction of light incidence changes. A variable angle spect...
Suncolor Co., Ltd.
120+ people viewing
Last viewed: 4 hours ago
Standard Response
■Standard grade performance of a stationary spectrophotometer that is portable but can be used on a desk. ・Highest level of device compatibility ...
X -Light
430+ people viewing
Very Fast Response
Accurately measure flexible films and special materials Portable spectrometical concentration and measuring meter Exact ™ 2 XP measure cmyk and spo...
4 models listed
Konica Minolta Japan Co., Ltd.
200+ people viewing
Last viewed: 1 day ago
Fast Response
■Summary This measuring instrument is a "Two in One" model spectrophotometer that can measure color and gloss values simultaneously. It greatly c...
Murakami Color Technology Institute Co., Ltd.
190+ people viewing
Last viewed: 12 hours ago
Fast Response
Pearl mica paint and raster tiles appear to change color when the viewing direction or direction of light incidence changes. A variable angle spect...
Konica Minolta Japan Co., Ltd.
270+ people viewing
Last viewed: 2 hours ago
Fast Response
■Summary This measuring instrument is a stationary horizontal colorimeter model with an integrating sphere D/8 type that can measure color and glos...
X -Light
280+ people viewing
Last viewed: 17 hours ago
Very Fast Response
The top -class non -contact inline spectroscope "Colorxra 45 (Color X -Ara 45)", which supports the paper manufacturing and plastic industry, is me...
Murakami Color Technology Institute Co., Ltd.
300+ people viewing
Last viewed: 21 hours ago
Fast Response
■Reproducibility and instrumental error for both reflected and transmitted color measurements are among the highest in the industry. Advanced optic...
2 models listed
Konica Minolta Japan Co., Ltd.
250+ people viewing
Last viewed: 1 day ago
Fast Response
■Extensive track record as a reference spectrophotometer Recognized for its high accuracy and reliability, it is used as a standard in various indu...
Murakami Color Technology Institute Co., Ltd.
170+ people viewing
Last viewed: 1 day ago
Fast Response
■Can measure color of non-flat samples such as molded products and human bodies. Adopts a flexible sensor that allows pinpoint measurement of the m...
Konica Minolta Japan Co., Ltd.
410+ people viewing
Last viewed: 52 minutes ago
Fast Response
■All-in-one spectrophotometer CM-5 with all functions such as display and operation buttons integrated "Color" is now measured not only in automobi...
Ihara Electronics Industry Co., Ltd.
130+ people viewing
Last viewed: 6 hours ago
Features ■Color graphic LCD ・Measure by displaying the approximate color of the measurement location ・Possible to visually check the location ■H...
Murakami Color Technology Institute Co., Ltd.
180+ people viewing
Last viewed: 17 hours ago
Fast Response
■Using unique technology, yellowing of the integrating sphere due to xenon lamp irradiation is drastically reduced. This is a spectrophotometer des...
Konica Minolta Japan Co., Ltd.
190+ people viewing
Last viewed: 1 day ago
Fast Response
■Summary book The measuring instrument is a stationary vertical colorimeter model with an integrating sphere D/8 type that can measure color and gl...
Suncolor Co., Ltd.
100+ people viewing
Last viewed: 4 hours ago
Standard Response
■Improving brand loyalty and promoting sales using professional color matching solution ColorReaderPRO ColorReader, an ultra-compact and lightweigh...
Tetsutani
580+ people viewing
Last viewed: 6 hours ago
SPECTRO 2 Guide (spectroscopic colored meter / color difference) is a measuring device that has a total solution that combines a color meter, fluor...
2 models listed
Konica Minolta Japan Co., Ltd.
250+ people viewing
Last viewed: 9 hours ago
Fast Response
■Summary This measuring instrument is a stationary horizontal colorimeter model with an integrating sphere D/8 type exclusively for reflection meas...
X -Light
450+ people viewing
Last viewed: 12 hours ago
Very Fast Response
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
Yagyu Shokai Co., Ltd.
40+ people viewing
Last viewed: 15 hours ago
Very Fast Response
5.0 Company Review
■Features - Compatible with ISO standards M0, M1, M2, and M3. ・In addition to common measurement items, the standard can display color difference ...
X -Light
230+ people viewing
Last viewed: 6 hours ago
Very Fast Response
Top class concentration measurement function Looking for a device that can measure all elements of CMYK in the press room? Exact Basic Plus automa...
Ogawa Seiki Co., Ltd.
360+ people viewing
Last viewed: 20 hours ago
Standard Response
4.5 Company Review
This colorimeter can be used in various fields such as textiles, construction, printing, and restoration of cultural properties. ■Features ・As th...
3 models listed
Murakami Color Technology Institute Co., Ltd.
160+ people viewing
Last viewed: 1 day ago
Fast Response
■Stable monitoring for long periods of time during the color process is possible. This is a monitoring device for process control that can provide ...
