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Journal of the Society of Motion Picture and Television Engineers ( Volume: 56, Issue: 2, February 1951)
[ACTIVE]

Semiautomatic Color Analyzer

Metadata

Publisher
SMPTE — White Plains, NY, USA
Doc Type
Journal Article
Content Type
Original Research
Abbreviated Title
J SMPTE
Volume
56, No. 2, pp. 197–204
Abstract
A semiautomatic color analyzer is described for rapidly determining the extent of unbalance, or deviation from “type,” of a processed color negative or color positive monopack film. A standardized light source, a rotating color filter having three sectors which transmit narrow spectral bands of blue, green and red light, a multiplier-type phototube and amplifier, and a cathode-ray tube are employed. The sweep circuit of the cathode-ray tube is synchronized with the rotating filter wheel so that a horizontal straight-line image is produced when a gray or near-gray density of a “balanced” sample is in the light path. A cathode-ray tube image which deviates from a horizontal straight-line image indicates unbalance in a test sample, whereupon correction filters can be introduced in the light path by means of servomechanism devices to produce a horizontal straight-line or “balanced” condition.
Publication Date
1951-02-01
DOI
10.5594/J01849
ISSN
Print: 0898-042X
Link
https://doi.org/10.5594/J01849
Author(s)
Lloyd E. VardenLloyd E. Varden, Pavelle Color Inc., 533 W. 57th St., New York 19, N.Y.
Copyright
© 1951 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

  • 1. “Principles of color sensitometry — a report of the Color Sensitometry Subcommittee,” Jour. SMPTE , vol. 54 , pp. 653 – 724 , June 1950 . EXTERNAL
  • 10. Szirlai G. C. Schroeder A. C. , U.S. Pat. 2, 519, 154. EXTERNAL
  • 11. Zworykin V. K. Ramberg E. G. , Photoelectricity and Its Application , Wiley & Sons , New York , 1949 . EXTERNAL
  • 2. Sweet M. H. , “An improved photo-multiplier tube color densitometer,” Jour. SMPTE , vol. 54 , pp. 35 – 62 , Jan. 1950 . EXTERNAL
  • 3. Senger N. , “Progress in the field of the Agfacolor process,” Film und Farbe (Dresden, 1942 ), pp. 11 – 14 , Max Hesses, Berlin, 1943. EXTERNAL
  • 4. Schneider W. , “The Agfacolor process,” FIAT Final Report No. 976, n.d. EXTERNAL
  • 5. Schneider W. Berger H. , “On the sensitometry of the Agfacolor process,” Zeits. f. wiss. Photographie, Photophysik und Photochemie , vol. 42 , pp. 43 – 52 , 1943 . EXTERNAL
  • 6. Feldt R. Berkley C. , “The cathode-ray spectrograph,” Proc. Nat. Electronics Conf. , pp. 198 – 211 , Oct. 1946 . EXTERNAL
  • 7. Feldt R. Berkley C. , U.S. Pat. 2, 444, 560. EXTERNAL
  • 8. Dieke G. H. Crosswhite H. M. , “Spectrochemical analysis with the oscillograph,” J. Opt. Soc. Amer. , vol. 36 , pp. 192 – 195 , 1946 . EXTERNAL
  • 9. Sziklai G. C. Schroeder A. C. , “Electronic spectroscopy,” J. Appl. Phys. , vol. 17 , pp. 763 – 767 , 1946 . EXTERNAL
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Preview:
Lloyd E. Varden; Semiautomatic Color Analyzer, Journal of the Society of Motion Picture and Television Engineers ( Volume: 56, Issue: 2, February 1951); SMPTE, 1951. Available at https://doi.org/10.5594/J01849
Snippet:
Lloyd E. Varden; Semiautomatic Color Analyzer, Journal of the Society of Motion Picture and Television Engineers ( Volume: 56, Issue: 2, February 1951); SMPTE, 1951. Available at https://doi.org/10.5594/J01849

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Lloyd E. Varden; Semiautomatic Color Analyzer, Journal of the Society of Motion Picture and Television Engineers ( Volume: 56, Issue: 2, February 1951); SMPTE, 1951. Available at https://doi.org/10.5594/J01849
Snippet:
<span class="citation">Lloyd E. Varden; <cite>Semiautomatic Color Analyzer</cite>, Journal of the Society of Motion Picture and Television Engineers ( Volume: 56, Issue: 2, February 1951); SMPTE, 1951. Available at <a href="https://doi.org/10.5594/J01849" target="_blank" rel="noopener">https://doi.org/10.5594/J01849</a></span>

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Preview:
Lloyd E. Varden; Semiautomatic Color Analyzer, Journal of the Society of Motion Picture and Television Engineers ( Volume: 56, Issue: 2, February 1951); SMPTE, 1951
doi: 10.5594/J01849
url: https://doi.org/10.5594/J01849
Snippet:
<li>
Lloyd E. Varden; <cite id="bib-10-5594-j01849">Semiautomatic Color Analyzer</cite>, Journal of the Society of Motion Picture and Television Engineers ( Volume: 56, Issue: 2, February 1951); SMPTE, 1951
<span class="doi">10.5594/J01849</span>
</li>

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