High-Resolution Return-Beam Vidicon Cameras: A Comparison with High-Resolution Photography

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPTE
Volume: 79, No. 8, pp. 694–705
Abstract: The development of high-resolution electron optics for 50- × 50-mm image formats and of electron guns providing a small-diameter electron source has improved the modulation-transfer function of return-beam vidicons to a level competitive with high-definition aerial films. Limitations are imposed when the polarization time is restricted by operational considerations in the single-exposure read-prepare mode of a slow-scan system. Injection of a control potential permits discrimination against the large “haze” component from low-contrast scenes to optimize the current of the reading beam and the signal-to-noise ratio in the video signal output of the electron multiplier. Comparison at a spatial frequency of 100 cycles/mm shows that the high-resolution television camera has a detection efficiency equal to or better than SO-243 high-resolution aerial film, particularly at low contrasts, and can potentially exceed it by an order of magnitude with further development.
Publication Date: 1970-08-01
DOI: 10.5594/J00886
ISSN: Print: 0361-4573
Link: https://doi.org/10.5594/J00886
Author(s): Otto H. SchadeSr., RCA Corp., 415 S. Fifth St., Harrison, NJ 07029
Copyright: © 1970 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

An Evaluation of Photographic Image Quality and Resolving Power [Active]
Image Gradation, Graininess and Sharpness in Television and Motion-Picture Systems: Part IV, A & B: Image Analysis in Photographic and Television Systems (Definition and Sharpness) [Active]
1. Schade O. H. Sr. , “Electron optics and signal readout of high-definition return-beam vidicon cameras,” RCA Rev. , 31 : Mar. 1970 . EXTERNAL
2. Schade Otto H. Sr. , “The resolving power functions and quantum processes of television cameras,” RCA Rev. , 28 : Sept. 1967 . EXTERNAL

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Otto H. Schade; High-Resolution Return-Beam Vidicon Cameras: A Comparison with High-Resolution Photography, Journal of the SMPTE ( Volume: 79, Issue: 8, August 1970); SMPTE, 1970. Available at https://doi.org/10.5594/J00886

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Otto H. Schade; High-Resolution Return-Beam Vidicon Cameras: A Comparison with High-Resolution Photography, Journal of the SMPTE ( Volume: 79, Issue: 8, August 1970); SMPTE, 1970. Available at https://doi.org/10.5594/J00886

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<span class="citation">Otto H. Schade; <cite>High-Resolution Return-Beam Vidicon Cameras: A Comparison with High-Resolution Photography</cite>, Journal of the SMPTE ( Volume: 79, Issue: 8, August 1970); SMPTE, 1970. Available at <a href="https://doi.org/10.5594/J00886" target="_blank" rel="noopener">https://doi.org/10.5594/J00886</a></span>

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<li>
Otto H. Schade; <cite id="bib-10-5594-j00886">High-Resolution Return-Beam Vidicon Cameras: A Comparison with High-Resolution Photography</cite>, Journal of the SMPTE ( Volume: 79, Issue: 8, August 1970); SMPTE, 1970
<span class="doi">10.5594/J00886</span>
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