How-To Geek

Charge Coupled Device (CCD)

Although Charge Coupled Devices (CCDs) are used for a variety of commercial and industrial applications, the most common way consumers interact with CCDs is via digital cameras. Digital cameras large and small, from the cheapest point-and-shoot pocket camera to pricey full-frame DSLR cameras use CCDs to capture their images.

When functioning as an image capturing tool, a CCDs is constructed with a layer of photo-active capacitors that accumulate an electrical charge directly proportional to the amount of light falling on them. The camera’s firmware then takes the raw data gathered from the CCD and converts it into a more human friendly image.

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