An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Calibrations of Colorimeters for Display Measurements: Some Commercial Colorimeters Have Uncertainties in Display-Color Measurements That Are Too Large for Many Commercial, Industrial and Military Applications - But New NIST-Developed Calibration Proc...
Published
Author(s)
Steven W. Brown, Yuqin Zong, Yoshihiro Ohno
Abstract
Commercial color measuring instruments (colorimeters and spectroradiometers) are currently used in a number of product development and control environments, as well as for product acceptance testing and a variety of other applications. In many cases, the instruments are used without much attention paid to the accuracy of the measurements while products are accepted or rejected depending on their measured color. To properly use an instrument to measure display colors, the measurement uncertainty should be known. Only then can you tell how well your color-measurement system is performing, and only then can you tell whether it can do the job you need it to do. Colorimeters are normally calibrated against an incandescent source with a spectral distribution approximating the CIE Standard Illuminant A. Significant errors can subsequently occur when these colorimeters are used to measure displays with colors having very different spectral distributions from the calibration source. In response, we developed a calibration facility at NIST tailored to display measurements. Upon calibration, a colorimeter will be able to measure any color of a display with a known uncertainty in both chromaticity and luminance. In this work, we describe the calibration facility and present results of calibrations of five commercial instruments against a CRT display.
Citation
Information Display: The Official Journal of the Society for Information Display
Brown, S.
, Zong, Y.
and Ohno, Y.
(1999),
Calibrations of Colorimeters for Display Measurements: Some Commercial Colorimeters Have Uncertainties in Display-Color Measurements That Are Too Large for Many Commercial, Industrial and Military Applications - But New NIST-Developed Calibration Proc..., Information Display: The Official Journal of the Society for Information Display
(Accessed October 8, 2024)