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Journal of the SMPTE ( Volume: 67, Issue: 3, March 1958)
[ACTIVE]

Cold Mirrors for Projection Heat Control

Metadata

Publisher
SMPTE — White Plains, NY, USA
Doc Type
Journal Article
Content Type
Original Research
Abbreviated Title
J SMPTE
Volume
67, No. 3, pp. 175–177
Abstract
Light sources used in motion-picture projection radiate heat in the form of infrared radiation as well as visible light. While the infrared radiation increases problems of overheating and film distortion it does not contribute to the screen image; therefore, maximum reduction of infrared radiation with minimum visible light loss is essential with the use of the high energy output of present-day projection light sources. A front-surface-coated projection lamp mirror is described which reflects to the film a high percentage of visible light, but which transmits through the mirror most of the infrared. Comparisons are made between front-surface-coated mirrors, rear-surface-coated mirrors and absorption-type heat filters.
Publication Date
1958-03-01
DOI
10.5594/J11180
ISSN
Print: 0361-4573
Link
https://doi.org/10.5594/J11180
Copyright
© 1958 Society of Motion Picture and Television Engineers, Inc.
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Cold Mirrors for Projection Heat Control, Journal of the SMPTE ( Volume: 67, Issue: 3, March 1958); SMPTE, 1958. Available at https://doi.org/10.5594/J11180
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Cold Mirrors for Projection Heat Control, Journal of the SMPTE ( Volume: 67, Issue: 3, March 1958); SMPTE, 1958. Available at https://doi.org/10.5594/J11180

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Cold Mirrors for Projection Heat Control, Journal of the SMPTE ( Volume: 67, Issue: 3, March 1958); SMPTE, 1958. Available at https://doi.org/10.5594/J11180
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<span class="citation"><cite>Cold Mirrors for Projection Heat Control</cite>, Journal of the SMPTE ( Volume: 67, Issue: 3, March 1958); SMPTE, 1958. Available at <a href="https://doi.org/10.5594/J11180" target="_blank" rel="noopener">https://doi.org/10.5594/J11180</a></span>

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Preview:
Cold Mirrors for Projection Heat Control, Journal of the SMPTE ( Volume: 67, Issue: 3, March 1958); SMPTE, 1958
doi: 10.5594/J11180
url: https://doi.org/10.5594/J11180
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<li>
<cite id="bib-10-5594-j11180">Cold Mirrors for Projection Heat Control</cite>, Journal of the SMPTE ( Volume: 67, Issue: 3, March 1958); SMPTE, 1958
<span class="doi">10.5594/J11180</span>
</li>

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