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Journal of the Society of Motion Picture and Television Engineers ( Volume: 55, Issue: 4, October 1950)
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Physical Principles, Design and Performance of the Ventarc High-Intensity Projection Lamps

Metadata

Publisher
SMPTE — White Plains, NY, USA
Doc Type
Journal Article
Content Type
Original Research
Abbreviated Title
J SMPTE
Volume
55, No. 4, pp. 391–413
Abstract
The Ventarc lamps represent a new series of high-intensity carbon arc lamps for motion picture projection recently developed by the author at Zurich, Switzerland. The blown arc of the new lamp produces a distribution of brilliance which is highly advantageous for the illumination of the aperture. By using a new negative electrode the arc can be pushed up to an extremely high brilliance. The precision feed control of the Ventarc insures a perfect homogeneity and invariability of the screen illumination. The visible radiation of the arc is effectively concentrated on the projecture aperture by an entirely new optical system. Heating of the film is minimized by eliminating all invisible radiation. No surplus energy not useful at the screen has to pass through the film.
Publication Date
1950-10-01
DOI
10.5594/J14576
ISSN
Print: 0898-042X
Link
https://doi.org/10.5594/J14576
Author(s)
Edgar GretenerDr. Edgar Gretener, A.G., Zurich, Switzerland
Copyright
© 1950 Society of Motion Picture and Television Engineers, Inc.
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Edgar Gretener; Physical Principles, Design and Performance of the Ventarc High-Intensity Projection Lamps, Journal of the Society of Motion Picture and Television Engineers ( Volume: 55, Issue: 4, October 1950); SMPTE, 1950. Available at https://doi.org/10.5594/J14576
Snippet:
Edgar Gretener; Physical Principles, Design and Performance of the Ventarc High-Intensity Projection Lamps, Journal of the Society of Motion Picture and Television Engineers ( Volume: 55, Issue: 4, October 1950); SMPTE, 1950. Available at https://doi.org/10.5594/J14576

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Preview:
Edgar Gretener; Physical Principles, Design and Performance of the Ventarc High-Intensity Projection Lamps, Journal of the Society of Motion Picture and Television Engineers ( Volume: 55, Issue: 4, October 1950); SMPTE, 1950. Available at https://doi.org/10.5594/J14576
Snippet:
<span class="citation">Edgar Gretener; <cite>Physical Principles, Design and Performance of the Ventarc High-Intensity Projection Lamps</cite>, Journal of the Society of Motion Picture and Television Engineers ( Volume: 55, Issue: 4, October 1950); SMPTE, 1950. Available at <a href="https://doi.org/10.5594/J14576" target="_blank" rel="noopener">https://doi.org/10.5594/J14576</a></span>

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Preview:
Edgar Gretener; Physical Principles, Design and Performance of the Ventarc High-Intensity Projection Lamps, Journal of the Society of Motion Picture and Television Engineers ( Volume: 55, Issue: 4, October 1950); SMPTE, 1950
doi: 10.5594/J14576
url: https://doi.org/10.5594/J14576
Snippet:
<li>
Edgar Gretener; <cite id="bib-10-5594-j14576">Physical Principles, Design and Performance of the Ventarc High-Intensity Projection Lamps</cite>, Journal of the Society of Motion Picture and Television Engineers ( Volume: 55, Issue: 4, October 1950); SMPTE, 1950
<span class="doi">10.5594/J14576</span>
</li>

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