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

[ACTIVE]

A Rapid-Action Shutter with No Moving Parts

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPTE
Volume: 56, No. 4, pp. 398–406
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
ISSN: Print: 0898-042X
Link: https://doi.org/10.5594/J06334
Author(s): Harold E. EdgertonMassachusetts Institute of Technology, Cambridge, Mass., and
Charles W. WyckoffEdgerton, Germeshausen & Grier, Inc., 160 Brookline Ave., Boston, Mass
Copyright: © 1951 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

1. Faraday Michael , Experimental Researches in Electricity , vol. 3 , Bernard Quaritch , London, England , 1855 . EXTERNAL
2. Anderson J. A. Smith S. , “General characteristics of electrically exploded wires,” Astrophys. J. , vol. 64 , pp. 295 , 1926 . (Magneto-optic shutter. A cell containing water is placed between crossed nicols. A small coil of wire connected in series with the wire to be exploded is wound around the cell. The coil is so designed that with the maximum current a rotation of the plane of polarization of about 20° is produced. With a suitable resistance in the circuit it follows that the shutter is open only near the maximum of the first half cycle. Photographs of an early stage of the explosions are reproduced and discussed briefly.). EXTERNAL
3. Beams J. W. Allison F. , “Differences in the time lags of the Faraday Effect behind the magnetic field in various liquids,” Phys. Rev. , vol. 29 , pp. 161 – 164 , Jan. 1927 . EXTERNAL
4. Allison F. , “Effect of wave length on the differences in the lags of the Faraday Effect behind the magnetic field for various liquids,” Phys. Rev. , vol. 30 , pp. 66 – 70 , July 1927 . EXTERNAL
5. Sobolev N. N. , “Controlled optical shutter,” J. Exptl. Theoret. Phys. (USSR) , vol. 17 , pp. 655 – 660 , 1947 . EXTERNAL

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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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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>
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Explosive Argon Flashlamp [Active]
Some Aspects of Miniaturization in High-Speed Photography [Active]
Photography of Very Early States of Nuclear Explosions [Active]
Frame-Camera Development for High-Speed Photography [Active]