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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 20 — Jul. 10, 2010
  • pp: 3831–3839

Correction of self-screening effect in integrating sphere-based measurement of total luminous flux of large-area surface-emitting light sources

Seongchong Park, Seung-Nam Park, and Dong-Hoon Lee  »View Author Affiliations

Applied Optics, Vol. 49, Issue 20, pp. 3831-3839 (2010)

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We present a correction method of a systematic error that arises when total luminous flux of a large-area surface-emitting light source (SLS) is measured in an integrating sphere by substitution with a reference lamp. Putting a large-area SLS into an integrating sphere is equivalent to adding a low-reflective baffle to screen the spatial distribution of radiation inside the sphere, which severely changes the sphere responsivity. To compensate this self-screening effect, we propose to use a specially designed auxiliary lamp whose illuminating area is spatially matched to that of the SLS under test. The validity of the proposed correction method is tested by numerical simulations based on the radiative transfer equation.

© 2010 Optical Society of America

OCIS Codes
(120.2040) Instrumentation, measurement, and metrology : Displays
(120.3150) Instrumentation, measurement, and metrology : Integrating spheres
(120.5240) Instrumentation, measurement, and metrology : Photometry

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: April 7, 2010
Revised Manuscript: June 10, 2010
Manuscript Accepted: June 11, 2010
Published: July 1, 2010

Seongchong Park, Seung-Nam Park, and Dong-Hoon Lee, "Correction of self-screening effect in integrating sphere-based measurement of total luminous flux of large-area surface-emitting light sources," Appl. Opt. 49, 3831-3839 (2010)

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