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Color measurement is widely used in many manufacturing industries to ensure the color consistency of products such as paints, textiles, and automobiles. It is also very important in the food industry, as a number of quality control processes depend on reliable detection of the colors of fresh or processed foods and ingredients.
Given the diversity of specific applications, there are many types of color measurement instruments available. For complex applications that depend on detailed spectral information, spectrometer-type devices are used. One example of this is a Hamamatsu mini-spectrometer, which combines a linear image sensor, quartz transmission grating, and other optical components within a portable package. For less demanding applications, instruments built on low-cost RGB detectors are often sufficient.
An RGB detector is basically a multi-element photodiode coupled to red, green, and blue filters. These filters enable the photodiode to generate separate response curves for the three colors. Due to improvements in silicon processing and other fabrication techniques, it is possible to manufacture RGB sensors with finer pitch and smaller optical packaging. More components can also be integrated on the chip, which helps reduce the effects of interconnection noise, parasitic capacitance and leakage current, and as a result leads to better detector performance.
Hamamatsu offers a variety of color detectors, and can also customize other types of components for specific color sensing requirements. For example, CMOS linear sensors can be customized with color filters, and second-order filters can be mounted on photodiode arrays. Mini-spectrometers can also be adjusted to suit certain applications.
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Please contact us for information on other products which can be used for this application.
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