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3 November 2000 Recent developments in supersize image intensifiers
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Image intensifiers are routinely used for fast optical shuttering (into the sub-nanosecond region) and for photon counting for extended weak images. For many applications needing a large image input size, it has become common practice to use a fibre optic taper coupled to a CCD. The high quantum efficiency of the CCD is degraded by the optical losses in the fibre taper which may only be a few percent transmission. This had led Photek into developing ever-larger image intensifiers, 75 mm tubes in 1992, 80 mm in 1996, and 150 mm in 1999. This paper gives the results obtained with a 150 mm photon counting prototype tube. Results of photocathode developments and fast gating of these large tubes are also presented, together with anticipated performance of even larger proximity focus tubes. These tubes offer significant performance enhancement compared to fibre taper systems for most applications needing large image input format.
© (2000) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jonathon R. Howorth, Martin B. Ingle, Ian I. Ferguson, J. Ralph Powell, and Ian D. Phillips "Recent developments in supersize image intensifiers", Proc. SPIE 4128, Image Intensifiers and Applications II, (3 November 2000);


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