Screen Brightness Uniformity: Analysis and Comparisons

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Publisher: SMPTE — White Plains, NY, USA
Doc Type: Conference Paper
Content Type: Original Research
Volume: 2016, No. 10, pp. 1–16
Abstract: Many competing factors must be evaluated in order to optimize the visual theatrical presentation. For example, considering only visual factors, when choosing the projection screen one must consider brightness, brightness uniformity, dynamic range (contrast ratio), and uniform field contrast ratio (screen texture, perforations, and speckle). Notably, the brightness uniformity is especially difficult to address because it varies from seat to seat depending upon auditorium geometry and screen curvature. Furthermore, the brightness uniformity requires some form of multipoint measurement that must be analyzed to compare different configurations. We will present both modeling and measurements of screen brightness and brightness uniformity. We will then introduce both a seat and an auditorium “Q-Factor” to quantitatively compare the brightness uniformity between different setups. We will then use this metric to define an optimum screen curvature.
Publication Date: 2016-10-25
DOI: 10.5594/M001721
ISBN: Print: 978-1-61482-957-7
Link: https://doi.org/10.5594/M001721
Author(s): Dave ColemanRealD, Inc.
Keyword(s): Projection, Brightness Uniformity, Screen, Measurement, Stereoscopic
Copyright: © 2016 Society of Motion Picture and Television Engineers, Inc.

Bibliographic Reference(s)

Development of an Accurate and Repeatable Measurement Method for Speckle in Laser Illuminated Projectors [Active]
S. Singer, “The Independent Screen Geometry Analysis, Singer/Schneider Optics 1999 as referenced in T. Sætervadet, “The Advanced Projection Manual”, The Norwegian Film Institute (2006), p.25 EXTERNAL
D. Coleman, G. Sharp, “High Efficiency Polarization Preserving Cinema Projection Screens,” Society for Information Display, Paper 54.2, 2013T. Kunkel and E. Reinhard. “A reassessment of the simultaneous dynamic range of the human visual system”. Proceedings of the 7th Symposium on Applied Perception in Graphics and Visualization. 17–24 (2010). EXTERNAL
20F Technology Committee On-Screen Light Measurement Study Group Report, 14 August, 2014 EXTERNAL

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Dave Coleman; Screen Brightness Uniformity: Analysis and Comparisons, SMPTE Meetings and Conferences ( October 2016); SMPTE, 2016, ISBN: 978-1-61482-957-7. Available at https://doi.org/10.5594/M001721

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Dave Coleman; Screen Brightness Uniformity: Analysis and Comparisons, SMPTE Meetings and Conferences ( October 2016); SMPTE, 2016, ISBN: 978-1-61482-957-7. Available at https://doi.org/10.5594/M001721

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<span class="citation">Dave Coleman; <cite>Screen Brightness Uniformity: Analysis and Comparisons</cite>, SMPTE Meetings and Conferences ( October 2016); SMPTE, 2016, ISBN: 978-1-61482-957-7. Available at <a href="https://doi.org/10.5594/M001721" target="_blank" rel="noopener">https://doi.org/10.5594/M001721</a></span>

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Dave Coleman; Screen Brightness Uniformity: Analysis and Comparisons, SMPTE Meetings and Conferences ( October 2016); SMPTE, 2016, ISBN: 978-1-61482-957-7
doi: 10.5594/M001721
url: https://doi.org/10.5594/M001721

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<li>
Dave Coleman; <cite id="bib-10-5594-m001721">Screen Brightness Uniformity: Analysis and Comparisons</cite>, SMPTE Meetings and Conferences ( October 2016); SMPTE, 2016, ISBN: 978-1-61482-957-7
<span class="doi">10.5594/M001721</span>
</li>