Journal of the Society of Motion Picture Engineers ( Volume: 26, Issue: 5, May 1936)
[ACTIVE]
A Review of Projector and Screen Characteristics and their Effects upon Screen Brightness
Metadata
- Publisher
- SMPTE — White Plains, NY, USA
- Doc Type
- Journal Article
- Content Type
- Original Research
- Abbreviated Title
- J SMPE
- Volume
- 26, No. 5, pp. 522–531
- Abstract
- Two fundamental factors determine the light output of the motion picture projector: (1) source brightness and (2) the effective aperture of the projection optical system. When these are known accurately, the number of lumens available for screen illumination can be computed, after making allowances for losses that occur in the collective element, the shutter, and the objective lens. The method of computation is described, and results are given for typical projectors. It should be noted, however, that adjustments are made in the practical operation of projectors that can produce wide variations in the two fundamental factors. Therefore, the conditions of operation must be precisely known in order to apply the results to any particular installation. Screen brightness can be derived directly from the lumen output when the screen factors—area, reflectivity, and directional properties—are considered.
- Publication Date
- 1936-05-01
- DOI
10.5594/J08678- ISSN
- Print:
0097-5834 - Link
- https://doi.org/10.5594/J08678
- Author(s)
- A. A. CookBausch & Lomb Optical Co., Rochester, N. Y.
- Copyright
- © 1936 Society of Motion Picture and Television Engineers, Inc.
Bibliographic Reference(s)
- 1. Hardy A. C. : “The Optics of Motion Picture Projectors,” J. Soc. Mot. Pict. Eng. , XIV (March, 1930 ), No. 3 , p. 309 . EXTERNAL
- 2. Joy D. B. Downes A. C. : “Characteristics of High-Intensity Arcs,” J. Soc. Mot. Pict. Eng. , XIV (March, 1930 ), No. 3 , p. 291 . EXTERNAL
- 3. Joy D. B. Downes A. C. : “Direct-Current High-Intensity Arcs with Non-Rotating Positive Carbons,” J. Soc. Mot. Pict. Eng. , XXII (Jan., 1934 ), No. 1 , p. 42 . EXTERNAL
- 4. Hardy A. C. : “The Distribution of Light in Optical Systems,” J. Franklin Inst. , 208 (Dec., 1929 ), No. 6 , p. 779 . EXTERNAL
- 5. Kellner H. : “Absorption and Reflection Losses in Motion Picture Objectives,” Trans. Soc. Mot. Pict. Eng. , IV ( 1920 ), No. 11 , p. 74 . EXTERNAL
- 6. Rayton W. B. : “The Effect of Aperture Lenses on Illumination,” J. Soc. Mot. Pict. Eng. , XXIII (Dec., 1934 ), No. 6 , p. 309 . EXTERNAL
- 7. Wilcox H. M. Conrow L. W. : “Some Technical Aspects of Theater Operation,” J. Soc. Mot. Pict. Eng. , XXIII (Dec., 1934 ), No. 6 , p. 340 . EXTERNAL
- 8. Report of the Projection Screens Committee , J. Soc. Mot. Pict. Eng. , XVII (Sept., 1931 ), No. 3 , p. 437 . EXTERNAL
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A. A. Cook; A Review of Projector and Screen Characteristics and their Effects upon Screen Brightness, Journal of the Society of Motion Picture Engineers ( Volume: 26, Issue: 5, May 1936); SMPTE, 1936. Available at https://doi.org/10.5594/J08678
Snippet:
A. A. Cook; A Review of Projector and Screen Characteristics and their Effects upon Screen Brightness, Journal of the Society of Motion Picture Engineers ( Volume: 26, Issue: 5, May 1936); SMPTE, 1936. Available at https://doi.org/10.5594/J08678
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A. A. Cook; A Review of Projector and Screen Characteristics and their Effects upon Screen Brightness, Journal of the Society of Motion Picture Engineers ( Volume: 26, Issue: 5, May 1936); SMPTE, 1936. Available at https://doi.org/10.5594/J08678
Snippet:
<span class="citation">A. A. Cook; <cite>A Review of Projector and Screen Characteristics and their Effects upon Screen Brightness</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 26, Issue: 5, May 1936); SMPTE, 1936. Available at <a href="https://doi.org/10.5594/J08678" target="_blank" rel="noopener">https://doi.org/10.5594/J08678</a></span>
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A. A. Cook; A Review of Projector and Screen Characteristics and their Effects upon Screen Brightness, Journal of the Society of Motion Picture Engineers ( Volume: 26, Issue: 5, May 1936); SMPTE, 1936
doi: 10.5594/J08678
url: https://doi.org/10.5594/J08678
doi: 10.5594/J08678
url: https://doi.org/10.5594/J08678
Snippet:
<li> A. A. Cook; <cite id="bib-10-5594-j08678">A Review of Projector and Screen Characteristics and their Effects upon Screen Brightness</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 26, Issue: 5, May 1936); SMPTE, 1936 <span class="doi">10.5594/J08678</span> </li>