Journal of the Society of Motion Picture and Television Engineers ( Volume: 56, Issue: 4, April 1951)

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A Rapid-Action Shutter with No Moving Parts

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: The Rapatronic camera takes still exposures of 2 to 20 μsec with a high degree of resolution. Exposure is easily synchronized with a fast-transient event, and the shutter has at least a 30-deg viewing angle with apertures in the useful range for high-speed photography. The shutter is of the magneto-optic “light valve” type, operating by the rotation of the plane of polarization of light traversing glass in a magnetic field (Faraday effect). Three polarizers, crossed at 0-90-0 deg, produce an open-to-closed transmission ratio in excess of thirty million, and removal of the magnetic field closes the shutter, allowing it to pass only one billionth of the light from the subject.
Publication Date: 1951-04-01
DOI: 10.5594/J06334
Link: https://doi.org/10.5594/J06334
Author(s): Harold E. Edgerton, Charles W. Wyckoff

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Harold E. Edgerton and Charles W. Wyckoff; A Rapid-Action Shutter with No Moving Parts, Journal of the Society of Motion Picture and Television Engineers ( Volume: 56, Issue: 4, April 1951); SMPTE, 1951. Available at https://doi.org/10.5594/J06334

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Harold E. Edgerton and Charles W. Wyckoff; A Rapid-Action Shutter with No Moving Parts, Journal of the Society of Motion Picture and Television Engineers ( Volume: 56, Issue: 4, April 1951); SMPTE, 1951. Available at https://doi.org/10.5594/J06334

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<span class="citation">Harold E. Edgerton and Charles W. Wyckoff; <cite>A Rapid-Action Shutter with No Moving Parts</cite>, Journal of the Society of Motion Picture and Television Engineers ( Volume: 56, Issue: 4, April 1951); SMPTE, 1951. Available at <a href="https://doi.org/10.5594/J06334" target="_blank" rel="noopener">https://doi.org/10.5594/J06334</a></span>

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<li>
Harold E. Edgerton and Charles W. Wyckoff; <cite id="bib-10-5594-j06334">A Rapid-Action Shutter with No Moving Parts</cite>, Journal of the Society of Motion Picture and Television Engineers ( Volume: 56, Issue: 4, April 1951); SMPTE, 1951
<span class="doi">10.5594/J06334</span>
</li>