Characteristics of an internally illuminated calibration sphere
Applied Optics, Vol. 22, Issue 24, pp. 4004-4007 (1983)
http://dx.doi.org/10.1364/AO.22.004004
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Abstract
Measurements of the spatial angular variability of an internally illuminated integrating sphere have been made in the interest of using such a sphere to calibrate instruments with large angular fields of view. Spatial uniformity across a 29.8-cm aperture was found to be 1.9% or better for full twelve-lamp illumination and 2.6% for one-lamp illumination. Angular uniformity from normal to ±40° was found to be 3% or better.
Citation
Warren A. Hovis and John S. Knoll, "Characteristics of an internally illuminated calibration sphere," Appl. Opt. 22, 4004-4007 (1983)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-22-24-4004
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