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Significance and Use
The most fundamental method for obtaining CIE tristimulus values or other color coordinates for describing the colors of visual display units (VDUs) is by the use of spectroradiometric data. (See CIE No. 18 and 63.) These data are used by summation together with numerical values representing the 1931 CIE Standard Observer and normalized to Km, the maximum spectral luminous efficacy function.
The special requirements for characterizing VDUs possessing narrow or discontinuous spectra are presented and discussed. Modifications to the requirements of Practice E308 are given to correct for the unusual nature of narrow or discontinuous sources.
1.1 This test method prescribes the instrumental measurements required for characterizing the color and brightness of VDUs.
1.2 This test method is specific in scope rather than general as to type of instrument and object.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
E284 Terminology of Appearance
E308 Practice for Computing the Colors of Objects by Using the CIE System
E1341 Practice for Obtaining Spectroradiometric Data from Radiant Sources for Colorimetry
CIE PublicationsPublication CIE No. 63 Spectroradiometric Measurement of Light Sources, 1984
IEC PublicationsPublication No. 441 Photometric and Colorimetric Methods of Measurement of the Light Emitted by a Cathode-Ray Tube Screen, 1974 Available from International Electrotechnical Commission (IEC), 3 rue de Varemb, Case postale 131, CH-1211, Geneva 20, Switzerland, http://www.iec.ch.
ICS Number Code 17.180.20 (Colours and measurement of light)
ASTM E1336-11, Standard Test Method for Obtaining Colorimetric Data From a Visual Display Unit by Spectroradiometry, ASTM International, West Conshohocken, PA, 2011, www.astm.orgBack to Top