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Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 20 — Oct. 15, 2009
  • pp: 3241–3243

Estimation of the optical receiving plane positions of solar spectroradiometers with spherical diffusers on the basis of spatial responsivity data

Pasi Manninen, Tapani Koskela, Lasse Ylianttila, Petri Kärhä, and Erkki Ikonen  »View Author Affiliations


Optics Letters, Vol. 34, Issue 20, pp. 3241-3243 (2009)
http://dx.doi.org/10.1364/OL.34.003241


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Abstract

A straightforward method for estimating the position of the optical receiving plane of a spherical, dome-shaped diffuser from its spatial responsivity data is presented. The method is tested with two diffusers, types J1002 and J1015 from CMS Schreder, commonly used in solar UV spectroradiometers. The shift of the receiving plane from its nominal position determines a potential measurement error that occurs when measurements and calibrations are carried out with sources at different distances from the diffuser. Such information is particularly valuable for voluminous solar UV monitoring spectroradiometers that cannot easily be transported to laboratory calibrations. The results suggest that systematic measurement errors are at least of the order of 1%, if the position of the receiving plane is not properly taken into account, thus indicating a need to study the effect more carefully. This method can also be used to minimize measurement errors when designing diffusers.

© 2009 Optical Society of America

OCIS Codes
(010.1290) Atmospheric and oceanic optics : Atmospheric optics
(120.5630) Instrumentation, measurement, and metrology : Radiometry
(120.6200) Instrumentation, measurement, and metrology : Spectrometers and spectroscopic instrumentation
(230.1980) Optical devices : Diffusers

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: July 23, 2009
Manuscript Accepted: September 15, 2009
Published: October 15, 2009

Citation
Pasi Manninen, Tapani Koskela, Lasse Ylianttila, Petri Kärhä, and Erkki Ikonen, "Estimation of the optical receiving plane positions of solar spectroradiometers with spherical diffusers on the basis of spatial responsivity data," Opt. Lett. 34, 3241-3243 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-20-3241

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