Journal of the Society of Motion Picture Engineers ( Volume: 23, Issue: 6, December 1934)

[ACTIVE]

The Effect of Aperture Lenses on Illumination

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPE
Volume: 23, No. 6, pp. 309–317
Abstract: The complexity of the geometrical optics involved in a motion picture projector leads to numerous proposals for improving illumination in some respect that look plausible at first glance but generally fail in practice. Among such proposals we might consider the addition of a small collective lens in the immediate neighborhood of the film gate. Careful study of the transmission of light from source to screen reveals the fact that in some reflector arcs such a lens can improve evenness of illumination and in some cases raise the general level, although the latter could have been taken care of in the design of the lamp. In a typical condenser equipment with the 13.6-mm. high-intensity arc no possibility of improvement was found either in an analytical study or in experimental tests.
Publication Date: 1934-12-01
DOI: 10.5594/J08749
ISSN: Print: 0097-5834
Link: https://doi.org/10.5594/J08749
Author(s): W. B. RaytonBausch & Lomb Optical Co., Rochester, N. Y.
Copyright: © 1934 Society of Motion Picture and Television Engineers, Inc.

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W. B. Rayton; The Effect of Aperture Lenses on Illumination, Journal of the Society of Motion Picture Engineers ( Volume: 23, Issue: 6, December 1934); SMPTE, 1934. Available at https://doi.org/10.5594/J08749

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W. B. Rayton; The Effect of Aperture Lenses on Illumination, Journal of the Society of Motion Picture Engineers ( Volume: 23, Issue: 6, December 1934); SMPTE, 1934. Available at https://doi.org/10.5594/J08749

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<span class="citation">W. B. Rayton; <cite>The Effect of Aperture Lenses on Illumination</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 23, Issue: 6, December 1934); SMPTE, 1934. Available at <a href="https://doi.org/10.5594/J08749" target="_blank" rel="noopener">https://doi.org/10.5594/J08749</a></span>

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W. B. Rayton; The Effect of Aperture Lenses on Illumination, Journal of the Society of Motion Picture Engineers ( Volume: 23, Issue: 6, December 1934); SMPTE, 1934
doi: 10.5594/J08749
url: https://doi.org/10.5594/J08749

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<li>
W. B. Rayton; <cite id="bib-10-5594-j08749">The Effect of Aperture Lenses on Illumination</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 23, Issue: 6, December 1934); SMPTE, 1934
<span class="doi">10.5594/J08749</span>
</li>