SMPTE Journal ( Volume: 101, Issue: 7, July 1992)
[ACTIVE]
Continuously Variable, Remote Color Temperature Adjustments for Metal-Halide Lamps in Cinematographic Applications
Metadata
- Publisher
- SMPTE — White Plains, NY, USA
- Doc Type
- Journal Article
- Content Type
- Original Research
- Abbreviated Title
- SMPTE J
- Volume
- 101, No. 7, pp. 481–487
- Abstract
- One approach to achieving rapid and easy manipulation of color temperature has been investigated, the Liquid Dynamic Color Filter (LDCF). A thin layer of liquid — a pure iodine and ethyl alcohol solution — is continuously circulated, allowing the concentration of the solution to be changed and introduced to the filter layer. A spectrometer and color temperature meter are used to investigate the effect of the solution's concentration on a typical HMI lamp's color temperature. It was found that the color temperature of the filtered HMI lamp was a well-behaved, smooth function of the concentration. Color temperatures in the 5600° K to 3000° K range have been obtained. Spectrometer tests show that the iodine and ethyl alcohol solution does not introduce spectral discontinuities. However, the solution has shortcomings as an LDCF filtering solution. This is evident when the color correction and light balance ratios are investigated. Future work on improvements to the filter solution is planned.
- Publication Date
- 1992-07-01
- DOI
10.5594/J02242- ISSN
- Print:
0036-1682 - Link
- https://doi.org/10.5594/J02242
- Author(s)
- A. KetsdeverEntertainment Technology Program at University of Southern California, Los Angeles, CA 90089-1191.W. OmensEntertainment Technology Program at University of Southern California, Los Angeles, CA 90089-1191.E. P. MuntzEntertainment Technology Program at University of Southern California, Los Angeles, CA 90089-1191.
- Copyright
- © 1992 Society of Motion Picture and Television Engineers, Inc.
Bibliographic Reference(s)
- 1. OSRAM HMI Metallogen Lamp Publication, Van Nuys, Calif. EXTERNAL
- 2. Glickman R. , “Lighting - Light Sources and Lighting Filters,” American Cinematographer Manual , edited by Detmers F.H. , ASC , Hollywood , 1986 . EXTERNAL
- 3. Lemons T. , “HMI Lamps,” Lighting Design and Application , 8 : 32 – 37 , Aug. 1978 . EXTERNAL
- 4. White F. , Fluid Mechanics , McGraw-Hill , New York , 1986 . EXTERNAL
- 5. Ibid. EXTERNAL
- 6. Panton R. , Incompressible Flow , Wiley & Sons , New York , 1984 . EXTERNAL
- 7. Moran M. Shapiro H. , Fundamentals of Engineering Thermodynamics , Wiley & Sons , New York , 1988 . EXTERNAL
- 8. Brown A. Marco S. , Introduction to Heat Transfer , McGraw-Hill , New York , 1958 . EXTERNAL
- 9. Strahler A. Strahler A. , Environmental Geoscience: Interaction between Natural Systems and Man , Hamilton Publishing , Santa Barbara , 1973 . EXTERNAL
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A. Ketsdever, W. Omens, and E. P. Muntz; Continuously Variable, Remote Color Temperature Adjustments for Metal-Halide Lamps in Cinematographic Applications, SMPTE Journal ( Volume: 101, Issue: 7, July 1992); SMPTE, 1992. Available at https://doi.org/10.5594/J02242
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A. Ketsdever, W. Omens, and E. P. Muntz; Continuously Variable, Remote Color Temperature Adjustments for Metal-Halide Lamps in Cinematographic Applications, SMPTE Journal ( Volume: 101, Issue: 7, July 1992); SMPTE, 1992. Available at https://doi.org/10.5594/J02242
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A. Ketsdever, W. Omens, and E. P. Muntz; Continuously Variable, Remote Color Temperature Adjustments for Metal-Halide Lamps in Cinematographic Applications, SMPTE Journal ( Volume: 101, Issue: 7, July 1992); SMPTE, 1992. Available at https://doi.org/10.5594/J02242
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<span class="citation">A. Ketsdever, W. Omens, and E. P. Muntz; <cite>Continuously Variable, Remote Color Temperature Adjustments for Metal-Halide Lamps in Cinematographic Applications</cite>, SMPTE Journal ( Volume: 101, Issue: 7, July 1992); SMPTE, 1992. Available at <a href="https://doi.org/10.5594/J02242" target="_blank" rel="noopener">https://doi.org/10.5594/J02242</a></span>
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A. Ketsdever, W. Omens, and E. P. Muntz; Continuously Variable, Remote Color Temperature Adjustments for Metal-Halide Lamps in Cinematographic Applications, SMPTE Journal ( Volume: 101, Issue: 7, July 1992); SMPTE, 1992
doi: 10.5594/J02242
url: https://doi.org/10.5594/J02242
doi: 10.5594/J02242
url: https://doi.org/10.5594/J02242
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<li> A. Ketsdever, W. Omens, and E. P. Muntz; <cite id="bib-10-5594-j02242">Continuously Variable, Remote Color Temperature Adjustments for Metal-Halide Lamps in Cinematographic Applications</cite>, SMPTE Journal ( Volume: 101, Issue: 7, July 1992); SMPTE, 1992 <span class="doi">10.5594/J02242</span> </li>