Paper A–13: High-Intensity Explosive Light Sources

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPTE
Volume: 71, No. 1A, pp. 56–60
Abstract: An explosive light source has been developed to produce daylight-quality illumination intense enough for reflected light color photography using ultra-high-speed cameras. Previously used explosive “candles” required much more high explosive and emitted rapidly fading light that was considerably less brilliant. Sheet explosives are combined with aluminized Mylar as a mirror-like reflector to make a highly efficient pyramid-shaped candle that can cover from 10 to 200 μsec according to need. The luminous intensity is maintained by a diverging explosive area as the detonation wave travels the length of the argon-filled container. In addition to increased time and brightness efficiency, this more compact design illuminates more uniformly and scatters less light outside the subject area. The advantages of using various concentrations of argon as well as dilutions and admixtures with air, krypton and xenon were investigated. Methods are proposed whereby still more intense light can be obtained by substituting krypton and xenon, or adding these gases to the argon. The relative intensities of the various light sources were all compared and measured by photometric studies and calibration of films produced by photographing the light with a high-speed framing camera.
Publication Date: 1962-01-01
DOI: 10.5594/J18070XY
ISSN: Print: 0361-4573
Link: https://doi.org/10.5594/J18070XY
Author(s): Zev Pressman
Copyright: © 1962 Society of Motion Picture and Television Engineers, Inc.

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Zev Pressman; Paper A–13: High-Intensity Explosive Light Sources, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962. Available at https://doi.org/10.5594/J18070XY

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Zev Pressman; Paper A–13: High-Intensity Explosive Light Sources, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962. Available at https://doi.org/10.5594/J18070XY

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Zev Pressman; Paper A–13: High-Intensity Explosive Light Sources, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962. Available at https://doi.org/10.5594/J18070XY

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<span class="citation">Zev Pressman; <cite>Paper A–13: High-Intensity Explosive Light Sources</cite>, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962. Available at <a href="https://doi.org/10.5594/J18070XY" target="_blank" rel="noopener">https://doi.org/10.5594/J18070XY</a></span>

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Zev Pressman; Paper A–13: High-Intensity Explosive Light Sources, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962
doi: 10.5594/J18070XY
url: https://doi.org/10.5594/J18070XY

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<li>
Zev Pressman; <cite id="bib-10-5594-j18070xy">Paper A–13: High-Intensity Explosive Light Sources</cite>, Journal of the SMPTE ( Volume: 71, Issue: 1A, 1962); SMPTE, 1962
<span class="doi">10.5594/J18070XY</span>
</li>