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Journal of the SMPTE ( Volume: 78, Issue: 8, August 1969)
[ACTIVE]

An Abridged Goniophotometer for Evaluating Projection Screens and other Diffusing Materials

Metadata

Publisher
SMPTE
Doc Type
Journal Article
Article Type
research-article
Abstract
A complete photometric description of the angular distribution of light reflected or transmitted by any material is given by a goniophotometric curve or curves in which luminance is plotted as a function of reflection or transmission spread angle. However, the determination of these data can be a complicated operation. To allow more rapid and easy evaluation of front-projection screen materials, a simplified abridged version of a goniophotometer has been developed. This instrument compares material at certain preselected significant reflection angles. It has been found to be useful for quickly evaluating almost any sort of diffusing material. In order to make the instrument more versatile, a transmittance attachment has also been designed to permit similar evaluations for transmitting samples. The complete instrument is described and several examples of its use are shown.
Publication Date
1969-08-01
DOI
10.5594/J10842
Link
https://doi.org/10.5594/J10842
Author(s)
S. B. Saunders, J. J. De Palma
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S. B. Saunders and J. J. De Palma; An Abridged Goniophotometer for Evaluating Projection Screens and other Diffusing Materials, Journal of the SMPTE ( Volume: 78, Issue: 8, August 1969); SMPTE, 1969. Available at https://doi.org/10.5594/J10842
Snippet:
S. B. Saunders and J. J. De Palma; An Abridged Goniophotometer for Evaluating Projection Screens and other Diffusing Materials, Journal of the SMPTE ( Volume: 78, Issue: 8, August 1969); SMPTE, 1969. Available at https://doi.org/10.5594/J10842

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S. B. Saunders and J. J. De Palma; An Abridged Goniophotometer for Evaluating Projection Screens and other Diffusing Materials, Journal of the SMPTE ( Volume: 78, Issue: 8, August 1969); SMPTE, 1969. Available at https://doi.org/10.5594/J10842
Snippet:
<span class="citation">S. B. Saunders and J. J. De Palma; <cite>An Abridged Goniophotometer for Evaluating Projection Screens and other Diffusing Materials</cite>, Journal of the SMPTE ( Volume: 78, Issue: 8, August 1969); SMPTE, 1969. Available at <a href="https://doi.org/10.5594/J10842" target="_blank" rel="noopener">https://doi.org/10.5594/J10842</a></span>

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S. B. Saunders and J. J. De Palma; An Abridged Goniophotometer for Evaluating Projection Screens and other Diffusing Materials, Journal of the SMPTE ( Volume: 78, Issue: 8, August 1969); SMPTE, 1969
doi: 10.5594/J10842
url: https://doi.org/10.5594/J10842
Snippet:
<li>
S. B. Saunders and J. J. De Palma; <cite id="bib-10-5594-j10842">An Abridged Goniophotometer for Evaluating Projection Screens and other Diffusing Materials</cite>, Journal of the SMPTE ( Volume: 78, Issue: 8, August 1969); SMPTE, 1969
<span class="doi">10.5594/J10842</span>
</li>