Automated integrating sphere calibration standard

William E. Schneider; Phillip G. Austin

doi:10.1117/12.279232

26 September 1997 Automated integrating sphere calibration standard

William E. Schneider, Phillip G. Austin

Proceedings Volume 3140, Photometric Engineering of Sources and Systems; (1997) https://doi.org/10.1117/12.279232
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

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.

Citation Download Citation

William E. Schneider and Phillip G. Austin "Automated integrating sphere calibration standard", Proc. SPIE 3140, Photometric Engineering of Sources and Systems, (26 September 1997); https://doi.org/10.1117/12.279232

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