1 June 1991 High-resolution microchannel plate image tube development
Author Affiliations +
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, Stanley B. Patton, 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

Back to Top