3. Electronic photosensitive sensors
An electrical charge is generated in a pixel (pixel is short for "picture element": the smallest unit of an image) in proportion to the amount of incident light at that location. The complexity of high-speed image sensors stems from the way pixels are combined to achieve optimal spatial and temporal resolution in the final image.
3.1 Photoelectric effect
The simplest photosensitive electronic sensor is a light-sensitive gate, known as an "electrically polarized semiconductor junction " (silicon, germanium), which is electrically biased (MOS, Metal Oxide Semiconductor) to retain the electron-hole pair generated by the photoelectric effect when illuminated by a light source emitting within the spectral absorption band of its substrate. The photoelectric effect...
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Electronic photosensitive sensors
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