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Standard Practice for Obtaining Colorimetric Data from a Visual Display Unit Using Tristimulus Colorimeters

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Standard Practice for Obtaining Colorimetric Data from a Visual Display Unit Using Tristimulus Colorimeters


1.1 This practice is intended as an aid for improving the accuracy of colorimetric measurements made with tristimulus colorimeters on visual display units, such as cathode ray tubes (CRTs) and self-luminous flat-panel displays. It explains a useful step in the analysis of colorimetric data that takes advantage of the fact that light from such displays consists of an additive mixture of three primary colored lights. However, it is not a complete specification of how such measurements should be made.

1.2 This practice is limited to display devices and colorimetric instruments that meet linearity criteria as defined in the practice. It is not concerned with effects that might cause measurement bias such as temporal or geometric differences between the instrument being optimized and the instrument used for reference.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Significance and Use

This practice may be applied when tristimulus colorimeters are used to measure the colors produced on self-luminous video display devices such as CRTs and flat-panel displays, including electroluminescent (EL) panels, field emission displays (FEDs), and back-lit liquid crystal displays (LCDs). This practice is not meant to be a complete description of a procedure to measure the color coordinates of a display. Rather, it provides a method for obtaining more accurate results when certain conditions are met. It may be used by any person engaged in the measurement of color on display devices who has access to the requisite equipment.

This practice defines a class of tristimulus colorimeters that may be said to be compatible with this practice.


calibration (tristimulus colorimeters); cathode ray tubes (CRTs); chromaticity; choromaticity coordinates; colorimetry; data analysis; flat-panel displays; instrumental measurement (color/light); liquid crystal displays (LCDs); luminance; matrix transformation; self-luminous displays; tristimulus colorimeters; tristimulus values; visual/video display units (VDUs)

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Document Number


Revision Level

2003 R10 EDITION



Modification Type


Publication Date

Jan. 1, 2010

Document Type


Page Count

8 pages

Committee Number