Two devices are most commonly used in computer vision cameras to convernt light into an electrical signal are the vidicon tube and a CCD array. The vidicon tube has been around for many years and is still the primary device used in commercial television cameras.
For computer vision systems, charged coupled devices (CCD's) are far more widely used. These semi conductor devices offer smaller size, greater light sensitivity, and lower power operation than vidicons. Both the CCD's and vidicons are still used.
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