Journal of the Society of Motion Picture Engineers ( Volume: 33, Issue: 10, October 1939)

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Carbons for Transparency Process Projection in Motion Picture Studios

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPE
Volume: 33, No. 10, pp. 353–373
Abstract: Data are given on the amount and distribution of light which can be obtained on the transparent screen with regular high-intensity carbons and various optical systems. These optical systems include two condenser-type systems and two relay-condenser-type systems used with f/2.3 and f/2.0 objective lenses. Values are obtained which are in line with the recommendations on Process Projection Equipment by the Research Council of the Academy of Motion Picture Arts and Sciences. In addition, characteristics of two new carbons developed for this purpose are given. These are also evaluated in the relay-condenser system and give the advantage of additional light, or the same light at lower energy input.
Publication Date: 1939-10-01
DOI: 10.5594/J11936
ISSN: Print: 0097-5834
Link: https://doi.org/10.5594/J11936
Author(s): D. B. Joy
W. W. Lozier
M. R. Null
Copyright: © 1939 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

1 Recommendations on Process Projection Equipment,” Bulletin, the Research Council, Academy of Motion Picture Arts and Sciences (Feb. 3, 1939 ); J. Soc. Mot. Pict. Eng., XXXII (June, 1939), p. 589. EXTERNAL
10 Kellnbr H. : “Results Obtained with Relay Condensing System.” Trans. Soc. Mot. Picl. Eng. , XVIII ( 1924 ), p. 143 . EXTERNAL
11 Townsend L. M. : “An Improved Condenser System for Motion Picture Projection,” Trans. Sac. Mot. Pict. Eng. , XI ( 1927 ), p. 512 . EXTERNAL
12 Hill R. : Trans. Sac. Mot. Picl. Eng. , XX ( 1924 ). p. 88 . EXTERNAL
2 Popovic G. G. : “Background Projection for Process Cinematography,” J. Soc. Mot. Pict. Eng. , XXIV (Feb., 1936 ), p. 102 . EXTERNAL
3 Popovic G. G. : “Recent Developments in Background Projection,” J. Soc. Mot. Pict. Eng. , XXX (May, 1938 ), p. 535 . EXTERNAL
4 Hardy A. C. : “The Distribution of Light in Optical Systems,” J. Franklin Inst. , 208 (Dec., 1929 ). p. 773 . EXTERNAL
5 Hardy A. C. : “The Optics of Motion Picture Projectors,” J. Sac. Mot. Pict. Eng. , XIV (March, 1930 ). p. 309 . EXTERNAL
6 Cook A. A. : “A Review of Projector and Screen Characteristics, and Their Effects upon Screen Brightness,” J. Sac. Mot. Pict. Eng. , XXVI (May, 1936 ), p. 522 . EXTERNAL
7 Kellner H. : “Can the Efficiency of the Present Condensing Systems Be Increased?” Trans. Sac. Mot. Pict. Eng. XVII ( 1923 ), p. 133 . EXTERNAL
8 U. S. Pat. No. 1,630,616 (May 31, 1927). EXTERNAL
9 “The Principles of Optics,” Hardy Perrin , p. 508 , McGraw-Hill Book Company ( New York ) 1932 . EXTERNAL

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D. B. Joy, W. W. Lozier, and M. R. Null; Carbons for Transparency Process Projection in Motion Picture Studios, Journal of the Society of Motion Picture Engineers ( Volume: 33, Issue: 10, October 1939); SMPTE, 1939. Available at https://doi.org/10.5594/J11936

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D. B. Joy, W. W. Lozier, and M. R. Null; Carbons for Transparency Process Projection in Motion Picture Studios, Journal of the Society of Motion Picture Engineers ( Volume: 33, Issue: 10, October 1939); SMPTE, 1939. Available at https://doi.org/10.5594/J11936

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<span class="citation">D. B. Joy, W. W. Lozier, and M. R. Null; <cite>Carbons for Transparency Process Projection in Motion Picture Studios</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 33, Issue: 10, October 1939); SMPTE, 1939. Available at <a href="https://doi.org/10.5594/J11936" target="_blank" rel="noopener">https://doi.org/10.5594/J11936</a></span>

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D. B. Joy, W. W. Lozier, and M. R. Null; <cite id="bib-10-5594-j11936">Carbons for Transparency Process Projection in Motion Picture Studios</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 33, Issue: 10, October 1939); SMPTE, 1939
<span class="doi">10.5594/J11936</span>
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