Chromasens Machine Vision Camera Combines Spectral Color Measurement with Ultra High Speeds


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Multispectral imaging now enables the extraction of several wavelength bands during automated vision inspections, and is proving to be far more accurate than traditional RGB (red, green, blue) cameras in detecting invisible color flaws. Of this new breed of multispectral cameras, the Chromasens' truePIXA line-scan camera stands out, especially in the real-time color measurement of food, organic materials, pharmaceuticals and printed materials.

The Chromasens' truePIXA features twelve spectral selective sensors that simultaneously scan an object within a spectral data range of 380nm to 730nm in twelve individual color channels -- instead of just three (RGB). The resulting high-contrast spectral images provide precise space-resolved spectral measurements of the whole image and in arbitrary areas of interest. Exceptionally versatile, the camera permits measurements on RGB, CIE-L*a*b* and spectral reflectance with high stability and excellent repeatability. Plus, with up to 3500 pixels per channel and 21.1 kHz line frequency, it achieves optical resolution up to 60 μm/pixel at speeds up to 6 meters-per-second.

Because multi-band imaging encompasses a range of vision applications, no single camera configuration can satisfy the various uses. Instead Chromasens has developed a camera architecture that can be customized. Seven separate truePIXA models are available ranging from 43 dots per inch (dpi) to 423dpi with a variety of capabilities.

"On-line checking with the truePIXA camera reduces the number of rejections because it lets the manufacturer initiate corrective actions early in the production process," notes Martin Hund, CEO of Chromasens. "The result is significantly less waste, lower labor costs and higher quality products."

About Chromasens GmbH

Founded in 2004 as a former division of Siemens AG, Chromasens GmbH designs, develops and produces innovative image capturing and processing systems to satisfy the most stringent of demands. Chromasens' expertise lies in the development of both components and systems. The optical, electronic and mechanical elements of high-performance cameras and illumination systems are perfectly adapted to suit the specific tasks faced by each individual customer. The company is based in Constance, Germany, and is ISO 9001 certified. Chromasens offers professional advice and support throughout each phase of the project cycle to its direct and project customers who require customized, individual image capturing solutions. The company's standardized image processing components are distributed worldwide via certified value-added distributors.

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