Improved 16mm Projector for Research Films

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Publisher: SMPTE
Doc Type: Journal Article
Article Type: research-article
Abstract: The flicker-free, slow-motion and single-frame projector described in the November 1954 issue of the SMPTE Journal has been completely redesigned to give more reliable and smoother operation. In the transition from cine to single-frame projection, the 5-blade shutter is shifted to one side, leaving a single 42° blade to occult the film aperture during film transport. An electrical interlock in the pushbutton-triggering circuit excludes any possibility of overrun and assures uniform registration of successive frames. Also described is an experimental version of the projector with a 10-blade shutter and 12° pulldown. It provides relatively flicker-free projection at speeds from 5 to 3 frames/sec.
Publication Date: 1957-06-01
DOI: 10.5594/J11241
Link: https://doi.org/10.5594/J11241
Author(s): S. A. Weinberg, J. S. Watson, G. H. Ramsey

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S. A. Weinberg, J. S. Watson, and G. H. Ramsey; Improved 16mm Projector for Research Films, Journal of the SMPTE ( Volume: 66, Issue: 6, June 1957); SMPTE, 1957. Available at https://doi.org/10.5594/J11241

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S. A. Weinberg, J. S. Watson, and G. H. Ramsey; Improved 16mm Projector for Research Films, Journal of the SMPTE ( Volume: 66, Issue: 6, June 1957); SMPTE, 1957. Available at https://doi.org/10.5594/J11241

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<span class="citation">S. A. Weinberg, J. S. Watson, and G. H. Ramsey; <cite>Improved 16mm Projector for Research Films</cite>, Journal of the SMPTE ( Volume: 66, Issue: 6, June 1957); SMPTE, 1957. Available at <a href="https://doi.org/10.5594/J11241" target="_blank" rel="noopener">https://doi.org/10.5594/J11241</a></span>

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S. A. Weinberg, J. S. Watson, and G. H. Ramsey; Improved 16mm Projector for Research Films, Journal of the SMPTE ( Volume: 66, Issue: 6, June 1957); SMPTE, 1957
doi: 10.5594/J11241
url: https://doi.org/10.5594/J11241

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S. A. Weinberg, J. S. Watson, and G. H. Ramsey; <cite id="bib-10-5594-j11241">Improved 16mm Projector for Research Films</cite>, Journal of the SMPTE ( Volume: 66, Issue: 6, June 1957); SMPTE, 1957
<span class="doi">10.5594/J11241</span>
</li>