Journal of the Society of Motion Picture Engineers ( Volume: 19, Issue: 1, July 1932)

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Biplane Filament Construction—A High Intensity Incandescent Lamp Light Source for Motion Picture Projection

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Journal Article
Content Type: Original Research
Abbreviated Title: J SMPE
Volume: 19, No. 1, pp. 829–841
Abstract: Manufacturers of motion picture projectors have been continuously demanding increasingly brighter and more uniform light sources. The biplane staggered filament construction, consisting of two parallel rows of coils, so placed that the coils in one plane fill the spaces between coils in the other, is now being presented as the lamp manufacturer's answer to this demand of the industry. A report is presented on comparative tests made with monoplane and biplane filament lamps ranging in wattage from 200 to 1000, with several types of optical systems. A description of the methods pursued in taking screen lumen readings and making bulb temperature measurements is also included.
Publication Date: 1932-07-01
DOI: 10.5594/J05498
ISSN: Print: 0097-5834
Link: https://doi.org/10.5594/J05498
Author(s): J. T. MiliCommercial Engineering Laboratory, Westinghouse Lamp Co., Bloomfield, N.J.
Copyright: © 1932 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

1 Dennington A. R. : “Incandescent Lamps for Motion Picture Service,” Trans. Soc. Mot. Pict. Eng. (April, 1918 ), No. 5 , p. 36 . EXTERNAL

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J. T. Mili; Biplane Filament Construction—A High Intensity Incandescent Lamp Light Source for Motion Picture Projection, Journal of the Society of Motion Picture Engineers ( Volume: 19, Issue: 1, July 1932); SMPTE, 1932. Available at https://doi.org/10.5594/J05498

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J. T. Mili; Biplane Filament Construction—A High Intensity Incandescent Lamp Light Source for Motion Picture Projection, Journal of the Society of Motion Picture Engineers ( Volume: 19, Issue: 1, July 1932); SMPTE, 1932. Available at https://doi.org/10.5594/J05498

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<span class="citation">J. T. Mili; <cite>Biplane Filament Construction—A High Intensity Incandescent Lamp Light Source for Motion Picture Projection</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 19, Issue: 1, July 1932); SMPTE, 1932. Available at <a href="https://doi.org/10.5594/J05498" target="_blank" rel="noopener">https://doi.org/10.5594/J05498</a></span>

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<li>
J. T. Mili; <cite id="bib-10-5594-j05498">Biplane Filament Construction—A High Intensity Incandescent Lamp Light Source for Motion Picture Projection</cite>, Journal of the Society of Motion Picture Engineers ( Volume: 19, Issue: 1, July 1932); SMPTE, 1932
<span class="doi">10.5594/J05498</span>
</li>