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Products Found: 1997
Showing Results For: Image Sensors, Camera
An image sensor in a camera is a detector that allows the camera to convert photons (that is, light) into electrical signals the device interprets. Image sensor and camera families are module-level devices or components designed to capture visual information electronically in visible or infrared spectrums. These products consist of arrays of photosensitive elements linked to a shared control and interface mechanism. The products include standard still video and image capture and specialised applications, including thermal and spatial imaging.
CCD and CMOS are the two standard and essential types of image sensors.
The CCDs are sensors based on passive photodiodes’ arrays, which integrate charge during the camera's exposure time. The resultant charge is then sent to electronics to read the accumulated charges of various pixels and translate them into voltages.
The quantum efficiency is very high thanks to the passive pixel device of the CCD. This is especially good in applications where the light is poor. Additionally, high pixel uniformity can be achieved because the power dissipation is the same for all pixels (or at least for the pixels in the same column). On the other hand, switching rates are prolonged, so the low bandwidth (typically <20 fps) and technology output to CCD sensors is non-standard, making them quite expensive.
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