NIST Reference Densitometer for Visual Diffuse Transmission Density

Published

July 26, 1999

Author(s)

E A. Early, Christopher L. Cromer, X Xiong, D J. Dummer, Thomas R. O'Brian, Albert C. Parr

Abstract

The Optical Technology Division of the National Institute of Standards and Technology has developed a new reference densitometer for measuring visual diffuse transmission densities using the diffuse influx mode. This densitometer is used to calibrate both x-ray and photographic film step tablet Standard Reference Materials. The design, characterization, and operation of the densitometer are detailed. The densitometer was fully characterized both to verify compliance with the applicable documentary standards and to determine the combined uncertainty in transmission density associated with the calibrations.

Citation

Journal of Research (NIST JRES) -

Volume

43

NIST Pub Series

Journal of Research (NIST JRES)

Pub Type

NIST Pubs

Download Paper

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Keywords

densitometer, optical density, visual diffuse transmission density

Citation

Early, E. , Cromer, C. , Xiong, X. , Dummer, D. , O'Brian, T. and Parr, A. (1999), NIST Reference Densitometer for Visual Diffuse Transmission Density, Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=841323 (Accessed October 15, 2025)