Journal of the Society of Motion Picture Engineers ( Volume: 18, Issue: 6, June 1932)

[ACTIVE]

The Principles of the Light Valve

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPE
Volume: 18, No. 6, pp. 697–731
Abstract: The light valve has been used very widely as the modulating device in systems of film sound recording. In this paper the principles of operation of the light valve are discussed, and those engineering factors which prescribe limitations on performance and indicate operating advantages are described in detail. The type of distortion which results when a light valve is overloaded is depicted both for single-plane and two-plane valves. Finally, a new type of light valve having advantages from the standpoints of weight, size, and stability of operation is described.
Publication Date: 1932-06-01
DOI: 10.5594/J05508
ISSN: Print: 0097-5834
Link: https://doi.org/10.5594/J05508
Author(s): T. E. SheaBell Telephone Laboratories, Inc., New York, N. Y.
W. HerriottBell Telephone Laboratories, Inc., New York, N. Y.
W. R. GoehnerBell Telephone Laboratories, Inc., New York, N. Y.
Copyright: © 1932 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

The transmission of pictures over telephone lines [Active]
Speech Power and Its Measurement [Active]
Western Electric Noiseless Recording [Active]
Scanning Losses in Reproduction [Active]
The Measurement of Light Valve Resonance by the Absorption Method [Active]
Sound Recording with the Light Valve [Active]
The Theory of Sound [Active]
1 Ives H. E. Horton J. W. Parker R. D. Clark A. B. : “The Transmission of Pictures over Telephone Circuits,” Bell System Tech. J. , 4 (April, 1925 ), No. 2 , p. 187 . EXTERNAL
2 Wente E. C. : U. S. Patent 1,686,355. EXTERNAL
5 Ayleigh R. , “Theory of Sound,” Vol. 1 , MacMillan & Co. , London, England ( 1896 ), p. 175 . EXTERNAL
6 This analysis follows closely an unpublished memorandum by C. F. SAcia of the Bell Telephone Laboratories. EXTERNAL
9 Sivian L. J. : “Speech Power and Its Measurement,” J. Acoust. Soc. of Amer. , 1 (Jan. 1930 ), No. 2 , Part 2, p. 1 . EXTERNAL

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T. E. Shea, W. Herriott, and W. R. Goehner; The Principles of the Light Valve, Journal of the Society of Motion Picture Engineers ( Volume: 18, Issue: 6, June 1932); SMPTE, 1932. Available at https://doi.org/10.5594/J05508

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T. E. Shea, W. Herriott, and W. R. Goehner; The Principles of the Light Valve, Journal of the Society of Motion Picture Engineers ( Volume: 18, Issue: 6, June 1932); SMPTE, 1932. Available at https://doi.org/10.5594/J05508

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<span class="citation">T. E. Shea, W. Herriott, and W. R. Goehner; <cite>The Principles of the Light Valve</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 18, Issue: 6, June 1932); SMPTE, 1932. Available at <a href="https://doi.org/10.5594/J05508" target="_blank" rel="noopener">https://doi.org/10.5594/J05508</a></span>

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T. E. Shea, W. Herriott, and W. R. Goehner; The Principles of the Light Valve, Journal of the Society of Motion Picture Engineers ( Volume: 18, Issue: 6, June 1932); SMPTE, 1932
doi: 10.5594/J05508
url: https://doi.org/10.5594/J05508

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<li>
T. E. Shea, W. Herriott, and W. R. Goehner; <cite id="bib-10-5594-j05508">The Principles of the Light Valve</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 18, Issue: 6, June 1932); SMPTE, 1932
<span class="doi">10.5594/J05508</span>
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Referenced By

Harmonic Distortion in Variable-Density Records [Active]
Mementos of Early Photographic Sound Recording [Active]
Applications of Laser Technology to Photographic Optical Sound Recording [Active]
Some Photographic Aspects of Sound Recording [Active]
Variable-Area Recording with the Light Valve [Active]
Analysis and measurement of distortion in variable-density recording [Active]
First Installment: History of Sound Motion Pictures [Active]
Direct-Positive Variable-Area Recording with the Light Valve [Active]
LLK 3 - A new Sound Camera Based on Laser Beam Exposure [Active]