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 — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPE
Volume: 50, No. 1, pp. 14–36
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
ISSN: Print: 0097-5834
Link: https://doi.org/10.5594/J12644
Author(s): J. L. PettusRCA Victor Division, Radio Corporation of America, Hollywood, Calif.
L. T. SachtlebenRCA Victor Division, Radio Corporation of America, Camden, New Jersey
Copyright: © 1948 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

Class B Push-Pull Recording for Original Negatives [Active]
A De Luxe Film Recording Machine [Active]
Extension of the Frequency Range of Film Recording and Reproduction [Active]
An Improved System for Noiseless Recording [Active]
The ABC of Photographic Sound Recording [Active]
Noise Reduction with Variable Area Recording [Active]
A New Dichroic Reflector and Its Application to Protocell Monitoring Systems [Active]
Preliminary Sound Recording Tests with Variable-Area Dye Tracks [Active]
A Direct Positive System of Sound Recording [Active]
A Newly Developed Light Modulator for Sound Recording [Active]
The RCA Recording System and Its Adaptation to Various Types of Sound-Track [Active]
Improved Noise-Reduction System for High-Fidelity Recording [Active]
(13) American Standard Z22.40–1946, J. Soc. Mot. Pict. Eng. , vol. 46 , p. 292 ; April, 1946 . EXTERNAL
(6) U. S. Patent 2,158,307. EXTERNAL

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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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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>
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Referenced By

Report of SMPE Progress Committee [Active]