F-Number vs. Illumination for Drive-In Theaters

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: One of the problems involved in the operation of drive-in theaters as opposed to in-door theaters is that of illumination. For example, screen brightness levels for an indoor theater may be 12 to 16 fL, whereas brightness levels of drive-in theaters are usually no more than 8 fL. Informed selection of projection lenses will aid in improving screen illumination. Tests were made of various lenses and illumination techniques to determine the best solution of the drive-in illumination problem.
Publication Date: 1969-10-01
DOI: 10.5594/J10795
Link: https://doi.org/10.5594/J10795
Author(s): Kenneth R. Leonard

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Kenneth R. Leonard; F-Number vs. Illumination for Drive-In Theaters, Journal of the SMPTE ( Volume: 78, Issue: 10, October 1969); SMPTE, 1969. Available at https://doi.org/10.5594/J10795

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Kenneth R. Leonard; F-Number vs. Illumination for Drive-In Theaters, Journal of the SMPTE ( Volume: 78, Issue: 10, October 1969); SMPTE, 1969. Available at https://doi.org/10.5594/J10795

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Kenneth R. Leonard; F-Number vs. Illumination for Drive-In Theaters, Journal of the SMPTE ( Volume: 78, Issue: 10, October 1969); SMPTE, 1969. Available at https://doi.org/10.5594/J10795

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<span class="citation">Kenneth R. Leonard; <cite>F-Number vs. Illumination for Drive-In Theaters</cite>, Journal of the SMPTE ( Volume: 78, Issue: 10, October 1969); SMPTE, 1969. Available at <a href="https://doi.org/10.5594/J10795" target="_blank" rel="noopener">https://doi.org/10.5594/J10795</a></span>

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Kenneth R. Leonard; F-Number vs. Illumination for Drive-In Theaters, Journal of the SMPTE ( Volume: 78, Issue: 10, October 1969); SMPTE, 1969
doi: 10.5594/J10795
url: https://doi.org/10.5594/J10795

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<li>
Kenneth R. Leonard; <cite id="bib-10-5594-j10795">F-Number vs. Illumination for Drive-In Theaters</cite>, Journal of the SMPTE ( Volume: 78, Issue: 10, October 1969); SMPTE, 1969
<span class="doi">10.5594/J10795</span>
</li>