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Journal of the SMPTE ( Volume: 67, Issue: 9, September 1958)
[ACTIVE]

A Direct-Drive Automatic Iris Control

Metadata

Publisher
SMPTE — White Plains, NY, USA
Doc Type
Journal Article
Content Type
Original Research
Abbreviated Title
J SMPTE
Volume
67, No. 9, pp. 600–604
Abstract
A new type of automatic iris control is incorporated in the Bell & Howell Design 290 8mm camera. The iris control is operated solely by power from a photovoltaic cell, made feasible by the exceptionally low power requirements of a unique rotary “barn-door” iris. The method of construction results in a highly shock-resistant mechanism with an almost unlimited service life. The automatic control is described and some of the design considerations discussed.
Publication Date
1958-09-01
DOI
10.5594/J14462
ISSN
Print: 0361-4573
Link
https://doi.org/10.5594/J14462
Author(s)
Mervin W. La RueBell & Howell Co., 7100 McCormick Rd., Chicago 45
John P. BagbyBell & Howell Co., 7100 McCormick Rd., Chicago 45
Stephen F. BushmanBell & Howell Co., 7100 McCormick Rd., Chicago 45
Stanley R. FreelandBell & Howell Co., 7100 McCormick Rd., Chicago 45
David M. MacMillinBell & Howell Co., 7100 McCormick Rd., Chicago 45
Copyright
© 1958 Society of Motion Picture and Television Engineers, Inc.
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Mervin W. La Rue, John P. Bagby, Stephen F. Bushman, Stanley R. Freeland, and David M. MacMillin; A Direct-Drive Automatic Iris Control, Journal of the SMPTE ( Volume: 67, Issue: 9, September 1958); SMPTE, 1958. Available at https://doi.org/10.5594/J14462
Snippet:
Mervin W. La Rue, John P. Bagby, Stephen F. Bushman, Stanley R. Freeland, and David M. MacMillin; A Direct-Drive Automatic Iris Control, Journal of the SMPTE ( Volume: 67, Issue: 9, September 1958); SMPTE, 1958. Available at https://doi.org/10.5594/J14462

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Mervin W. La Rue, John P. Bagby, Stephen F. Bushman, Stanley R. Freeland, and David M. MacMillin; A Direct-Drive Automatic Iris Control, Journal of the SMPTE ( Volume: 67, Issue: 9, September 1958); SMPTE, 1958. Available at https://doi.org/10.5594/J14462
Snippet:
<span class="citation">Mervin W. La Rue, John P. Bagby, Stephen F. Bushman, Stanley R. Freeland, and David M. MacMillin; <cite>A Direct-Drive Automatic Iris Control</cite>, Journal of the SMPTE ( Volume: 67, Issue: 9, September 1958); SMPTE, 1958. Available at <a href="https://doi.org/10.5594/J14462" target="_blank" rel="noopener">https://doi.org/10.5594/J14462</a></span>

SMPTE Icon SMPTE's HTML Pub

Preview:
Mervin W. La Rue, John P. Bagby, Stephen F. Bushman, Stanley R. Freeland, and David M. MacMillin; A Direct-Drive Automatic Iris Control, Journal of the SMPTE ( Volume: 67, Issue: 9, September 1958); SMPTE, 1958
doi: 10.5594/J14462
url: https://doi.org/10.5594/J14462
Snippet:
<li>
Mervin W. La Rue, John P. Bagby, Stephen F. Bushman, Stanley R. Freeland, and David M. MacMillin; <cite id="bib-10-5594-j14462">A Direct-Drive Automatic Iris Control</cite>, Journal of the SMPTE ( Volume: 67, Issue: 9, September 1958); SMPTE, 1958
<span class="doi">10.5594/J14462</span>
</li>

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