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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 36, Iss. 24 — Aug. 20, 1997
  • pp: 6083–6094

Polarized radiance distribution measurements of skylight. I. System description and characterization

Kenneth J. Voss and Yi Liu  »View Author Affiliations


Applied Optics, Vol. 36, Issue 24, pp. 6083-6094 (1997)
http://dx.doi.org/10.1364/AO.36.006083


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Abstract

A new system to measure the natural skylight polarized radiance distribution has been developed. The system is based on a fish-eye lens, CCD camera system, and filter changer. With this system sequences of images can be combined to determine the linear polarization components of the incident light field. Calibration steps to determine the system’s polarization characteristics are described. Comparisons of the radiance measurements of this system and a simple pointing radiometer were made in the field and agreed within 10% for measurements at 560 and 670 nm and 25% at 860 nm. Polarization tests were done in the laboratory. The accuracy of the intensity measurements is estimated to be 10%, while the accuracy of measurements of elements of the Mueller matrix are estimated to be 2%.

© 1997 Optical Society of America

History
Original Manuscript: December 16, 1996
Published: August 20, 1997

Citation
Kenneth J. Voss and Yi Liu, "Polarized radiance distribution measurements of skylight. I. System description and characterization," Appl. Opt. 36, 6083-6094 (1997)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-36-24-6083

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