Journal of the Society of Motion Picture Engineers ( Volume: 33, Issue: 7, July 1939)
[ACTIVE]
Properties of Lamps and Optical Systems for Sound Reproduction
Metadata
- Publisher
- SMPTE — White Plains, NY, USA
- Doc Type
- Journal Article
- Content Type
- Original Research
- Abbreviated Title
- J SMPE
- Volume
- 33, No. 7, pp. 80–96
- Abstract
- Sound reproduction systems are designed on the premise that the sound-track will be illuminated by a scanning-beam of substantially uniform flux density. This paper presents results of extensive studies of the actual beam characteristics for all types of optical systems and lamps employed in the reproduction of sound from film. They were made possible by a unique microphotometer, designed by the author, with which the scanning beam can be analyzed in minute elements. The studies cover: relative levels of scanning beam illumination; effect of source displacement from design position on total flux at the sound-track; microphotometer recordings of distribution of flux density across the beam as affected by optical systems and source forms and by displacements of the source.
- Publication Date
- 1939-07-01
- DOI
10.5594/J11979- ISSN
- Print:
0097-5834 - Link
- https://doi.org/10.5594/J11979
- Author(s)
- F. E. Carlson
- Copyright
- © 1939 Society of Motion Picture and Television Engineers, Inc.
Bibliographic Reference(s)
- 1 Batsel C. N. Cartwrighct H. : “Effect of Uneven Slit Illumination upon Distortion in Several Types of Variable Width Records,” J. Soc. Mot. Pict. Eng. , XXIX (Nov. 1937 ), p. 476 . EXTERNAL
- 2 Goehner W. R. : ”Microdensitometer as a Laboratory Measuring Tool,” J. Soc. Mot. Pict. Eng. , XXIII (Der. 1934 ), p. 318 . EXTERNAL
- 3 Cook E. D. : “The Aperture Effect,” J. Soc. Mot Pict. Eng. , XIV (June, 1930 ), p. 650 . EXTERNAL
- 4 Strykenr R. : “Scanning Losses in Reproduction,” J. Soc. Mol. Pict. Eng. , XV (Nov., 1930 ), p. 610 . EXTERNAL
- 5 Dimmick G. L. : “The RCA Recording System and Its Adaptation to Various Types of Sound-Track,” J. Soc. Mot. Pict. Eng. , XXIX (Sept., 1937 ), p. 258 . EXTERNAL
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F. E. Carlson; Properties of Lamps and Optical Systems for Sound Reproduction, Journal of the Society of Motion Picture Engineers ( Volume: 33, Issue: 7, July 1939); SMPTE, 1939. Available at https://doi.org/10.5594/J11979
Snippet:
F. E. Carlson; Properties of Lamps and Optical Systems for Sound Reproduction, Journal of the Society of Motion Picture Engineers ( Volume: 33, Issue: 7, July 1939); SMPTE, 1939. Available at https://doi.org/10.5594/J11979
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F. E. Carlson; Properties of Lamps and Optical Systems for Sound Reproduction, Journal of the Society of Motion Picture Engineers ( Volume: 33, Issue: 7, July 1939); SMPTE, 1939. Available at https://doi.org/10.5594/J11979
Snippet:
<span class="citation">F. E. Carlson; <cite>Properties of Lamps and Optical Systems for Sound Reproduction</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 33, Issue: 7, July 1939); SMPTE, 1939. Available at <a href="https://doi.org/10.5594/J11979" target="_blank" rel="noopener">https://doi.org/10.5594/J11979</a></span>
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F. E. Carlson; Properties of Lamps and Optical Systems for Sound Reproduction, Journal of the Society of Motion Picture Engineers ( Volume: 33, Issue: 7, July 1939); SMPTE, 1939
doi: 10.5594/J11979
url: https://doi.org/10.5594/J11979
doi: 10.5594/J11979
url: https://doi.org/10.5594/J11979
Snippet:
<li> F. E. Carlson; <cite id="bib-10-5594-j11979">Properties of Lamps and Optical Systems for Sound Reproduction</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 33, Issue: 7, July 1939); SMPTE, 1939 <span class="doi">10.5594/J11979</span> </li>