Journal of the Society of Motion Picture Engineers ( Volume: 25, Issue: 3, September 1935)

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Relation between Illumination and Screen Size for Non-Theatrical Projection

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: Methods of measuring the illumination output of 8-mm. and 16-mm. projectors are discussed, with particular reference to some of the many variables that affect the results. This output value, expressed in screen lumens, permits determining the screen size for any desired foot-candle level. But because screen brightness depends also upon the reflection characteristics of the screen material, there is presented a classification of various types of screen material. For each class of screen, maximum and minimum illumination values are suggested, with the object of keeping the screen brightness within the limits necessary for good picture quality. Charts illustrate the relation between these factors and between the screen size and projection distance.
Publication Date: 1935-09-01
DOI: 10.5594/J07414
Link: https://doi.org/10.5594/J07414
Author(s): D. F. Lyman

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D. F. Lyman; Relation between Illumination and Screen Size for Non-Theatrical Projection, Journal of the Society of Motion Picture Engineers ( Volume: 25, Issue: 3, September 1935); SMPTE, 1935. Available at https://doi.org/10.5594/J07414

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D. F. Lyman; Relation between Illumination and Screen Size for Non-Theatrical Projection, Journal of the Society of Motion Picture Engineers ( Volume: 25, Issue: 3, September 1935); SMPTE, 1935. Available at https://doi.org/10.5594/J07414

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<span class="citation">D. F. Lyman; <cite>Relation between Illumination and Screen Size for Non-Theatrical Projection</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 25, Issue: 3, September 1935); SMPTE, 1935. Available at <a href="https://doi.org/10.5594/J07414" target="_blank" rel="noopener">https://doi.org/10.5594/J07414</a></span>

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<li>
D. F. Lyman; <cite id="bib-10-5594-j07414">Relation between Illumination and Screen Size for Non-Theatrical Projection</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 25, Issue: 3, September 1935); SMPTE, 1935
<span class="doi">10.5594/J07414</span>
</li>