A Rotating-Mirror Framing Camera with Multiple Focal-Plane Shutters

Metadata

Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPTE
Volume: 69, No. 11, pp. 808–812
Abstract: In the preceding paper by Jacobs, a new family of rotating-mirror framing cameras has been discussed. This paper describes a camera in this family in which a number of concave mirrors are used with a single rotating mirror to create a connected sequence of images which pass several slits that act as focal-plane shutters. The images seen through the slits are relayed to form separate rows of frames by means of a smear-camera arrangement. By combining 36 concave mirrors with six properly phased slits, a total of 216 frames can be recorded in approximately 1/8 revolution of a rotating mirror. The camera now being constructed at the Naval Ordnance Laboratory will use two mirrored faces, 6 by 2 in., of a rectangular rotating mirror. At the anticipated rotor speed of 600 rps approximately 106 frames/sec will be attained. Each frame will be about 0.75 in. high and 1.0 in. wide. It will be possible to vary the shutter-to-framing-time ratio from about 0.5 to about 0.02 by varying the width of the slits used in the camera. The effective aperture will remain fixed at about f/22.
Publication Date: 1960-11-01
DOI: 10.5594/J15551
ISSN: Print: 0361-4573
Link: https://doi.org/10.5594/J15551
Author(s): Sigmund J. JacobsU.S. Naval Ordnance Laboratory, White Oak, Silver Spring, Md.
J. D. McLanahanU.S. Naval Ordnance Laboratory, White Oak, Silver Spring, Md.
P. F. DonovanU.S. Naval Ordnance Laboratory, White Oak, Silver Spring, Md.
Copyright: © 1960 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

An Improved ƒ/10 Sweeping-Image Camera [Active]
1. Jacobs S. J. , “Focal-plane shutters and the design of high-frame-rate cameras,” the preceding paper in this publication. EXTERNAL
2. Holland T. E. Davis W. C. , “Effects of elastic distortion of rotating mirrors on time resolution in smear cameras,” J. Opt. Soc. Am. , 48 , No. 6 , 365 – 371 , 1958 . EXTERNAL
4. Bowen I. S. , “The CIT rotating mirror camera (Mod. 2)” ; Project Camel, Calif. Inst, of Tech. (Apr. 27, 1945 ); U.S. AEC Tech. Information Service, Oak Ridge, Tenn. EXTERNAL

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Sigmund J. Jacobs, J. D. McLanahan, and P. F. Donovan; A Rotating-Mirror Framing Camera with Multiple Focal-Plane Shutters, Journal of the SMPTE ( Volume: 69, Issue: 11, November 1960); SMPTE, 1960. Available at https://doi.org/10.5594/J15551

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Sigmund J. Jacobs, J. D. McLanahan, and P. F. Donovan; A Rotating-Mirror Framing Camera with Multiple Focal-Plane Shutters, Journal of the SMPTE ( Volume: 69, Issue: 11, November 1960); SMPTE, 1960. Available at https://doi.org/10.5594/J15551

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<span class="citation">Sigmund J. Jacobs, J. D. McLanahan, and P. F. Donovan; <cite>A Rotating-Mirror Framing Camera with Multiple Focal-Plane Shutters</cite>, Journal of the SMPTE ( Volume: 69, Issue: 11, November 1960); SMPTE, 1960. Available at <a href="https://doi.org/10.5594/J15551" target="_blank" rel="noopener">https://doi.org/10.5594/J15551</a></span>

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Sigmund J. Jacobs, J. D. McLanahan, and P. F. Donovan; <cite id="bib-10-5594-j15551">A Rotating-Mirror Framing Camera with Multiple Focal-Plane Shutters</cite>, Journal of the SMPTE ( Volume: 69, Issue: 11, November 1960); SMPTE, 1960
<span class="doi">10.5594/J15551</span>
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