  Imaging systems have been an integral part of many beam monitors since the
early days of accelerator diagnostics. The main application remains the
observation of scintillating screens during commissioning, alignment and
routine operation with the beam. Recorded images are often further analyzed to
characterize the beam distribution for machine optimization. This report
provides an overview of imaging technologies and market trends of today. The
image sensor, like TV tubes and solid state sensors (CCD, CMOS and CID), with
particular focus on the aspects important for beam instrumentation will be
discussed. Digital image acquisition as well as camera interfaces and radiation
effects will be also presented.
