Motion Picture Film Scanner - Imaging Device

Imaging Device

  • The front end of a motion picture film scanner is similar to a telecine. The imaging system may be either a charge-coupled device (CCD), a complementary metal–oxide–semiconductor (CMOS) or cathode ray tube (CRT) imaging pick up.
  • A lamp is used as the light source in a CCD imaging front end. The CCDs convert the light to the video signals.
  • In a CRT imaging system the CRT (also called a Flying spot tube) is used as the light source and part of the scanning system. Photomultipliers or avalanche photodiodes are used to convert the light to electrical video signals.
  • A prism and/or dichroic mirrors or colour filters are used to separate the light into the three: red, green and blue, imaging pick up devices.

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