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Journal of the Society of Motion Picture Engineers ( Volume: 47, Issue: 2, August 1946)
[ACTIVE]

The Photometric Calibration of Lens Apertures

Metadata

Publisher
SMPTE
Doc Type
Journal Article
Article Type
research-article
Abstract
An absolute and physically sound method developed at Bausch & Lomb is described for the photometric calibration of lens apertures. Essentially the method consists in comparing the total flux from a depolished opal glass aperture with the flux through a given lens at a definite stop opening when focused on the opal glass aperture. An integrating sphere is used to collect the flux in the two cases and readings are made proportional to the flux with two matched barrier layer photocells. The theoretical development and some numerical results are given.
Publication Date
1946-08-01
DOI
10.5594/J12796
Link
https://doi.org/10.5594/J12796
Author(s)
Allen E. Murray
Source Data (JSON)

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Allen E. Murray; The Photometric Calibration of Lens Apertures, Journal of the Society of Motion Picture Engineers ( Volume: 47, Issue: 2, August 1946); SMPTE, 1946. Available at https://doi.org/10.5594/J12796
Snippet:
Allen E. Murray; The Photometric Calibration of Lens Apertures, Journal of the Society of Motion Picture Engineers ( Volume: 47, Issue: 2, August 1946); SMPTE, 1946. Available at https://doi.org/10.5594/J12796

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Allen E. Murray; The Photometric Calibration of Lens Apertures, Journal of the Society of Motion Picture Engineers ( Volume: 47, Issue: 2, August 1946); SMPTE, 1946. Available at https://doi.org/10.5594/J12796
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<span class="citation">Allen E. Murray; <cite>The Photometric Calibration of Lens Apertures</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 47, Issue: 2, August 1946); SMPTE, 1946. Available at <a href="https://doi.org/10.5594/J12796" target="_blank" rel="noopener">https://doi.org/10.5594/J12796</a></span>

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Preview:
Allen E. Murray; The Photometric Calibration of Lens Apertures, Journal of the Society of Motion Picture Engineers ( Volume: 47, Issue: 2, August 1946); SMPTE, 1946
doi: 10.5594/J12796
url: https://doi.org/10.5594/J12796
Snippet:
<li>
Allen E. Murray; <cite id="bib-10-5594-j12796">The Photometric Calibration of Lens Apertures</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 47, Issue: 2, August 1946); SMPTE, 1946
<span class="doi">10.5594/J12796</span>
</li>