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SMPTE Journal ( Volume: 103, Issue: 7, July 1994)
[ACTIVE]

Further Investigations into Continuously Variable, Remote Color Temperature Adjustments for Metal Halide Lamps

Metadata

Publisher
SMPTE
Doc Type
Journal Article
Article Type
research-article
Abstract
A filtering system using liquid organic colorants as optical filters for metal halide HMI lamps is discussed. The liquid filtering solution is continuously circulated, allowing variations in the solutions concentration to effect color temperature changes. In this study, three colorants in a water solvent were used to bring an HMI globe with a color temperature of about 5500°K down to 3200°K. This was done using the organic chemicals methylene orange, methyl blue, and acid fuchsin in combination. Many advantages of this technique over the use of gelatin filters have been identified. Among these, infinite variability in color temperature control, speed with which color temperature changes can be effected, and reduction of heat directly in front of the light source are the most important.
Publication Date
1994-07-01
DOI
10.5594/J15307
Link
https://doi.org/10.5594/J15307
Author(s)
A. Ketsdever, W. Omens, E. P. Muntz
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A. Ketsdever, W. Omens, and E. P. Muntz; Further Investigations into Continuously Variable, Remote Color Temperature Adjustments for Metal Halide Lamps, SMPTE Journal ( Volume: 103, Issue: 7, July 1994); SMPTE, 1994. Available at https://doi.org/10.5594/J15307
Snippet:
A. Ketsdever, W. Omens, and E. P. Muntz; Further Investigations into Continuously Variable, Remote Color Temperature Adjustments for Metal Halide Lamps, SMPTE Journal ( Volume: 103, Issue: 7, July 1994); SMPTE, 1994. Available at https://doi.org/10.5594/J15307

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A. Ketsdever, W. Omens, and E. P. Muntz; Further Investigations into Continuously Variable, Remote Color Temperature Adjustments for Metal Halide Lamps, SMPTE Journal ( Volume: 103, Issue: 7, July 1994); SMPTE, 1994. Available at https://doi.org/10.5594/J15307
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<span class="citation">A. Ketsdever, W. Omens, and E. P. Muntz; <cite>Further Investigations into Continuously Variable, Remote Color Temperature Adjustments for Metal Halide Lamps</cite>, SMPTE Journal ( Volume: 103, Issue: 7, July 1994); SMPTE, 1994. Available at <a href="https://doi.org/10.5594/J15307" target="_blank" rel="noopener">https://doi.org/10.5594/J15307</a></span>

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A. Ketsdever, W. Omens, and E. P. Muntz; Further Investigations into Continuously Variable, Remote Color Temperature Adjustments for Metal Halide Lamps, SMPTE Journal ( Volume: 103, Issue: 7, July 1994); SMPTE, 1994
doi: 10.5594/J15307
url: https://doi.org/10.5594/J15307
Snippet:
<li>
A. Ketsdever, W. Omens, and E. P. Muntz; <cite id="bib-10-5594-j15307">Further Investigations into Continuously Variable, Remote Color Temperature Adjustments for Metal Halide Lamps</cite>, SMPTE Journal ( Volume: 103, Issue: 7, July 1994); SMPTE, 1994
<span class="doi">10.5594/J15307</span>
</li>