How does a Digital Camera Work? Instead of exposing a photosensitive chemical known as film to a scene to create an imprinted image, most digital cameras use a charge-coupled device (CCD), an electronics instrument that creates a pixel map based on the electric charge generated when photons slam into a sensitive material. This phenomenon is called the photoelectric effect, and was elucidated by Albert Einstein in a famous 1905 paper.
Revo #SecurityCamera is a powerful Infrared Illuminator bullet camera that uses a high sensitive 1/3 inch (1/4 inch) interline transfer Charge Coupled Device (CCD) image sensor, and all state circuitry, which provides extremely long life and high reliability.
Charge-Coupled Device (CCD) Image Sensor Market is driven by low price of CCD base image sensors; low cost advantage of charge-coupled device (CCD) image sensor is estimated to exhaust due to obsolesce of this technology. http://www.transparencymarketresearch.com/charge-coupled-device-image-sensor-market.html