Nearfocus Image Intensifiers

Image intensifiers are applicated in many areas of industrial image processing and research. Depending upon the application they can be used for several of the following functions:


  • Image intensifiers amplify optical pictures on their input window and project it on the output window. Depending on the type of the intensifier amplifications of up to 10^9 are possible. In this case image intensifiers are applicated as pure light enhancers.


  • Image intensifiers can also be used as image converters in order to shift optical signals from the invisible to the visible spectral region. Depending upon the internal design the picture recording can be situated in the range between 110nm to 900nm while the output is between 400nm and 700nm.


  • Moreover image intensifiers are pulsable and can be used as electronic high speed shutters. Particularly image intensifiers of the second generation provide here shutter times of even less than 5ns.
 
The image intensifiers offered by the EURECA MESSTECHNIK GMBH provide the following features:

  • Compact design
  • Low noise
  • High long-term stability
  • 1:1 imaging
  • High resolution
  • High amplification
  • With 0, 1, 2 or 3 MCPs
  • Infinitesimal distortion
  • 9 different photocathodes possible
  • 5 different phosphor screens possible
  • Other materials on request

In contrast to image intensifiers with electrostatic optic nearfocus image intensifier consist of plane parallel photocathodes and phosphorous screens. Therefor over the whole usable area an equally high resolution with infinitesimal distortion is possible. The image is upright and has a 1:1 scale.

There are different input window materials for different applications available. Different photocathodes can be used in the inside of the input window, of which electrons are emitted when the window is illuminated.

These electrons are accelerated by high voltage and hit the phosphorous screen of the output window.




Last updated: 10/13/2005