3. Photosensitive electronic sensors
An electrical charge is created at a pixel (pixel is the contraction of picture element) in proportion to the level of light incident at that site. The complexity of high-speed image sensors lies in the way pixels are combined to achieve optimum spatial and temporal resolution of the final matrix.
3.1 Photoelectric effect
The simplest photosensitive electronic sensor is a light-sensitive gate, called a "semiconductor junction" (silicon, germanium), electrically polarized (MOS capacitance, Metal Oxyde Semiconductor) so that it can retain the electron-hole pair obtained by the photoelectric effect when illuminated by a light source emitting in the spectral absorption band of its substrate. The photoelectric effect is obtained when the energy of the incident photon,...
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Photosensitive electronic sensors
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