Journal of the Society of Motion Picture Engineers ( Volume: 50, Issue: 1, January 1948)

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A New Variable-Area Recorder Optical System

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: A new variable-area recording optical system is announced which incorporates refinements and improvements in design and arrangement that make for better performance and more convenient operation, maintenance, and servicing. Optical features include improvements in aperture condenser, aperture, and intermediate objective lens designs; in design and mounting of slit; in mounting of filter; in ground-noise-reduction shutter and phototube monitor; in design and mounting of monitoring optics and monitoring screen. The system incorporates features enabling the operator to record a negative or positive track at will; it utilizes a new low-distortion galvanometer previously announced before this Society. It has been expressly designed as a component part of a new de luxe recording machine, RCA Type PR-31, also previously announced before this Society.
Publication Date: 1948-01-01
DOI: 10.5594/J12644
Link: https://doi.org/10.5594/J12644
Author(s): J. L. Pettus, L. T. Sachtleben

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J. L. Pettus and L. T. Sachtleben; A New Variable-Area Recorder Optical System, Journal of the Society of Motion Picture Engineers ( Volume: 50, Issue: 1, January 1948); SMPTE, 1948. Available at https://doi.org/10.5594/J12644

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J. L. Pettus and L. T. Sachtleben; A New Variable-Area Recorder Optical System, Journal of the Society of Motion Picture Engineers ( Volume: 50, Issue: 1, January 1948); SMPTE, 1948. Available at https://doi.org/10.5594/J12644

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<span class="citation">J. L. Pettus and L. T. Sachtleben; <cite>A New Variable-Area Recorder Optical System</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 50, Issue: 1, January 1948); SMPTE, 1948. Available at <a href="https://doi.org/10.5594/J12644" target="_blank" rel="noopener">https://doi.org/10.5594/J12644</a></span>

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<li>
J. L. Pettus and L. T. Sachtleben; <cite id="bib-10-5594-j12644">A New Variable-Area Recorder Optical System</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 50, Issue: 1, January 1948); SMPTE, 1948
<span class="doi">10.5594/J12644</span>
</li>