Fedchak, J.
, Carter, A.
and Datla, R.
(2006),
Measurement of Small Apertures, Metrologia, [online], https://doi.org/10.1088/0026-1394/43/2/S09, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=840990
(Accessed October 20, 2025)
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Measurement of Small Apertures
Published
Author(s)
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Abstract
The Low Background Infrared calibration (LBIR) facility at the National Institute of Standards and Technology (NIST) is developing a relative aperture area instrument to measure the areas of apertures with diameters ranging from 5 mm to 0.05 mm. NIST already has the capability of determining the absolute area of apertures with diameters larger than 0.35 mm. The goal of the LBIR facility is to achieve a standard uncertainty of better than 0.1%. We report on the current status of this effort and plans for improvement. We are near the goal for apertures larger than 0.350 mm.Citation
Metrologia
Volume
43
Pub Type
Journals
Download Paper
Keywords
Aperture Area Measurement, blackbody, calibration, LBIR, radiometry
Citation
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Created March 22, 2006, Updated October 12, 2021