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Theo Lasser, lead researcher and professor of optical engineering, and Alexndre Serov chose Symagery Microsystems VCA1281 monochrome CMOS camera for work at Ecole Polytechnique Federale de Lausanne, Switzerland, on a project meant to improve laser Doppler imaging through inclusion of a CMOS-based imager into a system that was demonstrated for high-speed laser Doppler imaging of blood flow. The use of the CMOS image sensor is a significant technological step forward when integrating or not integrating, with random pixel-addressing capability. The imager, which was developed for machine vision, has very low crosstalk between pixels and produces very detailed images. Psion Techlogix, which acquired Symagery, will no longer make sensors to be used in third-party cameras and other original equipment. Rather, Psion will use technology in its own imaging-capture products. Any appropriate CMOS imaging can be used in the laser Doppler imaging system. The prototype laser Doppler imaging system reached 15,000 fps (frames per second), and researchers obtained a 256x256 pixel flow image. Also part of the setup were a diode laser, fiber-optic cable, and a gradient index lens. The imaging technology has been patented by the researchers and will be commercialized by industrial partners. The researchers have worked with clinics to validate results.
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