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Short description
In many investigations the light intensity is so
small that the image appears no more as continuous structure, but
consists of spatial and temporal separated photons (zoom picture,
left). Only by accumulation of many such single frames, it is possible
to receive an image in a common sense.
These small light intensities cannot be seized with
conventional video cameras. Even special slow-scan cameras have a too
small sensitivity by dimensions for detection of these small photon
rates, despite cooling for long time integration. The use of these
cameras also complicates the handling and additionally they are very
cost-intensive.
The i.SPI-System is an image
capturing system for detection of intensities which are smaller than 10-5
photons/s/pixel.
It consists of a digital
10-bit FireWire camera, which is coupled with a lens optic to a single-
or two-stage image intensifier. It also includes image processing
software.
Our Single
Photon Imaging System is 1000.000 times more sensitive than other CCD
camera systems.
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