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Proceedings Paper

Maximum And Minimum Limitations Imposed On Bsdf Measurements
Author(s): Tod F. Schiff; John C. Stover; Daniel R. Cheever; Donald R. Bjork
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Paper Abstract

A lot of confusion exists within the optical community about the definition of Bidirectional Scatter Distribution Function (BSDF), how it should be measured, and how it should be specified. This paper defines BSDF, and then explores the practical factors that limit the measurable upper and lower values of BSDF. The upper value, which is limited by detector aperture size, can take on values exceeding 107 sr-1 in practical cases. The lower limit, sometimes called the electronic noise equivalent BSDF, is determined by the incident power and the detector solid angle as well as the system electronic noise, and needs to be specified with all three values. For systems that are noise limited by the detector, the minimum BSDF can be expressed in terms of the detector parameters (responsivity, noise, active area, and detectivity). The upper and lower limit for several systems has been explored and these results are presented.

Paper Details

Date Published: 5 April 1989
PDF: 8 pages
Proc. SPIE 0967, Stray Light and Contamination in Optical Systems, (5 April 1989); doi: 10.1117/12.948090
Show Author Affiliations
Tod F. Schiff, Toomay, Mathis and Associates, Inc (United States)
John C. Stover, Toomay, Mathis and Associates, Inc (United States)
Daniel R. Cheever, Toomay, Mathis and Associates, Inc (United States)
Donald R. Bjork, Toomay, Mathis and Associates, Inc (United States)

Published in SPIE Proceedings Vol. 0967:
Stray Light and Contamination in Optical Systems
Robert P. Breault, Editor(s)

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