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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 7 — Mar. 1, 2009
  • pp: 1316–1321

Method to determine the speckle characteristics of front projection screens

Falko Riechert, Felix Glöckler, and Uli Lemmer  »View Author Affiliations


Applied Optics, Vol. 48, Issue 7, pp. 1316-1321 (2009)
http://dx.doi.org/10.1364/AO.48.001316


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Abstract

We present a method to determine the speckle properties of front projection screens. Seven different screens are investigated in a backscattering geometry for 808 nm light. The speckle contrast reduction that results from polarization scrambling and reduced temporal coherence is modeled for the case of volume scattering in the screens. For this purpose, the screen’s volume scattering path length distributions and depolarization characteristics are determined. This is done via a streak camera setup to measure the temporal broadening of ultrashort 50 fs light pulses scattered in the screens. We show that it is essential to properly select a projection screen with large volume roughness in order to achieve low speckle contrast values for moderate illumination bandwidths.

© 2009 Optical Society of America

OCIS Codes
(030.4280) Coherence and statistical optics : Noise in imaging systems
(030.5770) Coherence and statistical optics : Roughness
(030.6140) Coherence and statistical optics : Speckle
(290.1350) Scattering : Backscattering
(290.4210) Scattering : Multiple scattering
(290.5820) Scattering : Scattering measurements

ToC Category:
Coherence and Statistical Optics

History
Original Manuscript: October 10, 2008
Revised Manuscript: February 3, 2009
Manuscript Accepted: February 3, 2009
Published: February 23, 2009

Citation
Falko Riechert, Felix Glöckler, and Uli Lemmer, "Method to determine the speckle characteristics of front projection screens," Appl. Opt. 48, 1316-1321 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-7-1316

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