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Proceedings Paper

Automated integrating sphere calibration standard
Author(s): William E. Schneider; Phillip G. Austin
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Paper Abstract

Calibration of sensitive, imaging type photometers, radiometers, or spectroradiometers for response generally requires a large area, uniformly radiating source that is accurately calibrated for luminance, radiance, or spectral radiance over relatively wide dynamic ranges. In many cases, automatic or computer control of the calibration source is desirable. This paper describes a series of automated integrating sphere calibration sources whose output can be precisely varied by either the accompanying electronic controller or an external computer. The calibration standard, which consists of a source module and an electronic controller, is designed such that it can be configured with integrating spheres having different diameters and various sized radiating ports. The luminance of the automated sphere sources can be varied from a maximum of 35,000 footlamberts to a minimum of 0.0001 footlamberts. The corresponding spectral radiance at 550 nm can be varied from 104 to 10-4 W/cm2 sr nm.

Paper Details

Date Published: 26 September 1997
PDF: 11 pages
Proc. SPIE 3140, Photometric Engineering of Sources and Systems, (26 September 1997); doi: 10.1117/12.279232
Show Author Affiliations
William E. Schneider, Optronic Labs., Inc. (United States)
Phillip G. Austin, Optronic Labs., Inc. (United States)

Published in SPIE Proceedings Vol. 3140:
Photometric Engineering of Sources and Systems
Angelo V. Arecchi, Editor(s)

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