1 June 1991 High-resolution microchannel plate image tube development
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The present 18 mm active diameter proximity focused microchannel plate (MCP) image tube design has been modified to produce significantly higher limiting spatial resolution. A glass input window of the 'bulls-eye' design with the blackened glass border, reduced cathode-to- MCP spacing, reduced channel center-to-center distance, reduced MCP-to-phosphor screen spacing, a brushed P20 phosphor screen, and a fiberoptic output window were used to achieve a limiting resolution in excess of 50 lp/mm. Test results, showing limiting resolution vs applied potentials, are correlated with a simple physical model of performance. The low-light- level white-light sinewave modulation transfer function, T(f), has been measured to be T(f) equals exp (-(f/21.5)1.46), where f is the spatial frequency in cycles per millimeter.
© (1991) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
C. Bruce Johnson, C. Bruce Johnson, Stanley B. Patton, Stanley B. Patton, Edward J. Bender, Edward J. Bender, } "High-resolution microchannel plate image tube development", Proc. SPIE 1449, Electron Image Tubes and Image Intensifiers II, (1 June 1991); doi: 10.1117/12.44260; https://doi.org/10.1117/12.44260


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