Improving Coupling efficiency of Camera System.
Photons are guided in the fiber optic direct to the sensitive pixels of the coupled sensor. The fiber optic coupling allows a much better transfer efficiency of the photons to the sensor pixel than a normal lens system.
For example a 1:1 fiber optic plate instead of a f/1,2 lens reach a 10 times higher efficiency. It is possible to couple to the most front illuminated CCDs and it is possible to couple to some back-thinned CCDs.