Direct Electron-Beam Film Scanning of Photographic Images

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPTE
Volume: 77, No. 1, pp. 17–21
Abstract: Flying-spot scanner system limitations are examined and a novel technique for overcoming them presented. A much-improved signal-to-noise ratio can be obtained by using a scintillator-coated film which, when scanned directly by the electron beam, emits light in direct contact with the photographic image. Both granularity noise and afterglow is sharply attenuated which makes possible bandwidths in excess of 50 MHz. A system incorporating this technique is described. Present system characteristics include a 20-MHz bandwidth while scanning a 5-in. photographic aerial film at a resolution of 100-line pairs/mm along the scannnng line. A description of the electron optical design and an automatic differentially pumped vacuum system is also presented.
Publication Date: 1968-01-01
DOI: 10.5594/J05866
ISSN: Print: 0361-4573
Link: https://doi.org/10.5594/J05866
Author(s): K. F. WallaceAmpex Corp., 401 Broadway, Redwood City, Calif. 94063.
Copyright: © 1968 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

1. Wallace K. F. , “Wideband readout of thermoplastic recordings,” Chap. 30, Optical and Electro-optical Information Procesing , M.I.T. Press , 1965 . EXTERNAL
2. These photographs and the complete facsimile transmission system were the subject of these papers presented at the NAECON in Dayton, Ohio, in May 1967 :. EXTERNAL
Rostocki S. J. , “A critique on laser and electron beam pictorial data processing,” Wright Patterson Air Force Base. EXTERNAL
Orme D. Wallace K. F. , “An ultra-high-resolution electron beam film scanner,” Ampex Corp. EXTERNAL

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K. F. Wallace; Direct Electron-Beam Film Scanning of Photographic Images, Journal of the SMPTE ( Volume: 77, Issue: 1, January 1968); SMPTE, 1968. Available at https://doi.org/10.5594/J05866

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K. F. Wallace; Direct Electron-Beam Film Scanning of Photographic Images, Journal of the SMPTE ( Volume: 77, Issue: 1, January 1968); SMPTE, 1968. Available at https://doi.org/10.5594/J05866

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K. F. Wallace; Direct Electron-Beam Film Scanning of Photographic Images, Journal of the SMPTE ( Volume: 77, Issue: 1, January 1968); SMPTE, 1968. Available at https://doi.org/10.5594/J05866

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<span class="citation">K. F. Wallace; <cite>Direct Electron-Beam Film Scanning of Photographic Images</cite>, Journal of the SMPTE ( Volume: 77, Issue: 1, January 1968); SMPTE, 1968. Available at <a href="https://doi.org/10.5594/J05866" target="_blank" rel="noopener">https://doi.org/10.5594/J05866</a></span>

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K. F. Wallace; Direct Electron-Beam Film Scanning of Photographic Images, Journal of the SMPTE ( Volume: 77, Issue: 1, January 1968); SMPTE, 1968
doi: 10.5594/J05866
url: https://doi.org/10.5594/J05866

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<li>
K. F. Wallace; <cite id="bib-10-5594-j05866">Direct Electron-Beam Film Scanning of Photographic Images</cite>, Journal of the SMPTE ( Volume: 77, Issue: 1, January 1968); SMPTE, 1968
<span class="doi">10.5594/J05866</span>
</li>