1、BRITISH STANDARDBS EN ISO11664-2:2011Colorimetry - Part 2:CIE standardilluminantsICS 17.180.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58Nation
2、al forewordThis British Standard is the UK implementation of EN ISO 11664-2:2011. It is identical to ISO 11664-2:2007. It supersedes BS ISO 10526:2007 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee CPL/34, Lamps and Related Equipment.A list of organiz
3、ations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations
4、.BS EN ISO 11664-2:2011This British Standard was published under the authority of the Standards Policy and Strategy Committee on 29 February 2008 BSI 2011Amendments/corrigenda issued since publicationDate Comments 30 September 2011 This corrigendum renumbers BS ISO 10526:2007 as BS EN ISO 11664-2:20
5、11ISBN 978 0 580 72261 5EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 11664-2 April 2011 ICS 17.180.20 English Version Colorimetry - Part 2: CIE standard illuminants (ISO 11664-2:2007) Colorimtrie - Partie 2: Illuminants CIE normalises (ISO 11664-2:2007) Farbmetrik - Teil 2: CIE Normlicht
6、arten (ISO 11664-2:2007)This European Standard was approved by CEN on 17 March 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists a
7、nd bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the
8、 responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germa
9、ny, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG
10、Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 11664-2:2011: EForeword The text of ISO 11664-2:2007 has been prepared by Technical Committee CIE “International Commissi
11、on on Illumination” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 11664-2:2011 by Technical Committee CEN/TC 139 “Paints and varnishes” the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, ei
12、ther by publication of an identical text or by endorsement, at the latest by October 2011, and conflicting national standards shall be withdrawn at the latest by October 2011. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN an
13、d/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Cze
14、ch Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 11664-2:2
15、007 has been approved by CEN as a EN ISO 11664-2:2011 without any modification. BS EN ISO 11664-2:2011EN ISO 11664-2:2011 (E)StandardCIE S 014-2/E:2006Colorimetry - Part 2: CIE Standard Illuminants Colorimtrie - Partie 2: Illuminants normaliss CIE Farbmessung - Teil 2: CIE Normlichtarten CIE Standar
16、ds are copyrighted and shall not be reproduced in any form, entirely or partly, without the explicit agreement of the CIE. CIE Central Bureau, Vienna CIE S 014-2/E:2006 Kegelgasse 27, A-1030 Vienna, Austria UDC: 535.65:006 Descriptor: Standardisation of colour measurement 535.643.2 Standard colorime
17、tric system iiiBS EN ISO 11664-2:2011EN ISO 11664-2:2011 (E) CIE, 2006 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing
18、 from CIE Central Bureau at the address below. CIE Central Bureau Kegelgasse 27 A-1030 Vienna Austria Tel.: +43 1 714 3187 0 Fax: +43 1 714 3187 18 e-mail: ciecbping.at Web: www.cie.co.at/ ivBS EN ISO 11664-2:2011EN ISO 11664-2:2011 (E)vFOREWORD Standards produced by the Commission Internationale de
19、 lEclairage (CIE) are a concise documentation of data defining aspects of light and lighting, for which international harmony requires such unique definition. CIE Standards are therefore a primary source of internationally accepted and agreed data, which can be taken, essentially unaltered, into uni
20、versal standard systems. This CIE Standard replaces ISO 10526:1999/CIE S005:1998 and was approved by the CIE Board of Administration and the National Committees of the CIE. It contains only minor changes from the previous standard, which was prepared by CIE Technical Committee 2-33, “Reformulation o
21、f CIE Standard Illuminants A and D65“ *). The numerical values of the relative spectral distributions of standard illuminants A and D65 defined by this Standard are the same, within an accuracy of six significant digits, as those defined in earlier versions of these illuminants. TABLE OF CONTENTS FO
22、REWORD v 1. SCOPE 1 2. NORMATIVE REFERENCES 2 3. DEFINITIONS 2 4. CIE STANDARD ILLUMINANT A 4 4.1 Definition 4 4.2 Theoretical basis 4 4.3 Supplementary notes. 4 5. CIE STANDARD ILLUMINANT D65 5 5.1 Definition 5 5.2 Experimental basis. 5 5.3 Correlated colour temperature. 5 6. CIE SOURCES FOR PRODUC
23、ING CIE STANDARD ILLUMINANTS . 5 6.1 CIE source A 5 6.2 Source for CIE standard illuminant D65 6 TABLE 1. RELATIVE SPECTRAL POWER DISTRIBUTIONS OF CIE STANDARD ILLUMINANTS A AND D65 (wavelengths in standard air). 7 ANNEX: BIBLIOGRAPHY (INFORMATIVE) . 7 *) Chairman of this TC was K. D. Mielenz (US),
24、members were: J. J. Hsia (US), J. R. Moore (GB), A. R. Robertson (CA), H. Terstiege (DE) =, J. F. Verrill (GB) =. This present revision was finalized by an editorial group in CIE Division 2: J. Gardner (AU), T. Goodman (UK), K. Mielenz (US), J. Moore (UK), Y. Ohno (US), A. Robertson (CA), J. Schanda
25、 (HU). CIE, 2006 BS EN ISO 11664-2:2011EN ISO 11664-2:2011 (E)blankCOLORIMETRY - PART 2: CIE STANDARD ILLUMINANTS 1. SCOPE This International Standard specifies two illuminants for use in colorimetry. The illuminants, which are defined in clauses 4 and 5 of this International Standard, are as follow
26、s: a) CIE standard illuminant A This is intended to represent typical, domestic, tungsten-filament lighting. Its relative spectral power distribution is that of a Planckian radiator at a temperature of approximately 2 856 K. CIE standard illuminant A should be used in all applications of colorimetry
27、 involving the use of incandescent lighting, unless there are specific reasons for using a different illuminant. b) CIE standard illuminant D65 This is intended to represent average daylight and has a correlated colour temperature of approximately 6 500 K. CIE standard illuminant D65 should be used
28、in all colorimetric calculations requiring representative daylight, unless there are specific reasons for using a different illuminant. Variations in the relative spectral power distribution of daylight are known to occur, particularly in the ultraviolet spectral region, as a function of season, tim
29、e of day, and geographic location. However, CIE standard illuminant D65 should be used pending the availability of additional information on these variations. Values for the relative spectral power distribution of CIE standard illuminants A and D65 are given in Table 1 of this International Standard
30、. Values are given at 1 nm intervals from 300 nm to 830 nm. The term “illuminant“ refers to a defined spectral power distribution, not necessarily realizable or provided by an artificial source. Illuminants are used in colorimetry to compute the tristimulus values of reflected or transmitted object
31、colours under specified conditions of illumination. The CIE has also defined illuminant C and other illuminants D. These illuminants are described in Publication CIE 15:2004 but they do not have the status of primary CIE standards accorded to the CIE standard illuminants A and D65 described in this
32、International Standard. It is recommended that one of the two CIE standard illuminants defined in this International Standard be used wherever possible. This will greatly facilitate the comparison of published results. It is noted that in the fields of graphic arts and photography extensive use is a
33、lso made of CIE illuminant D50. In most practical applications of colorimetry, it is sufficient to use the values of CIE standard illuminants A and D65 at less frequent wavelength intervals or in a narrower spectral region than defined in this Standard. Data and guidelines that facilitate such pract
34、ice are provided in Publication CIE 15:2004, together with other recommended procedures for practical colorimetry. The term “source“ refers to a physical emitter of light, such as a lamp or the sky. In certain cases, the CIE recommends laboratory sources that approximate the spectral power distribut
35、ions of CIE illuminants. In all cases, however, the definition of a CIE recommended source is secondary to the definition of the corresponding CIE illuminant, because of the possibility that, from time to time, new developments will lead to improved sources that represent a particular illuminant mor
36、e accurately or are more suitable for laboratory use. Subclause 6.1 of this International Standard describes CIE source A, which is recommended for laboratory realizations of CIE standard illuminant A. At present, there is no CIE recommended source representing CIE standard illuminant D65. 1BS EN IS
37、O 11664-2:2011EN ISO 11664-2:2011 (E)2. NORMATIVE REFERENCES The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendment
38、s) applies. CIE 15:2004. Colorimetry, 3rdedition. CIE 17.4-1987. International Lighting Vocabulary (ILV) - Joint publication IEC/CIE. ISO 23603:2005/CIE S 012/E:2004. Standard method of assessing the spectral quality of daylight simulators for visual appraisal and measurement of colour. CIE S 014-1/
39、E:2006. Colorimetry Part 1: CIE standard colorimetric observers. 3. DEFINITIONS For the purposes of this International Standard, the following definitions apply. These definitions are taken from CIE 17.4-1987, where other relevant terms will also be found. 3.1 chromaticity coordinates (see ILV 845-0
40、3-33) ratio of each of a set of three tristimulus values to their sum NOTE 1: As the sum of the three chromaticity coordinates equals 1, two of them are sufficient to define a chromaticity. NOTE 2: In the CIE 1931 and 1964 standard colorimetric systems, the chromaticity co-ordinates are represented
41、by the symbols x, y, z and x10, y10, z10. 3.2 chromaticity diagram (see ILV 845-03-35) plane diagram in which points specified by chromaticity co-ordinates represent the chromaticities of colour stimuli 3.3 CIE standard illuminants illuminants A and D65 defined by the CIE in terms of relative spectr
42、al power distributions 13.4 CIE sources artificial sources, specified by the CIE, whose relative spectral power distributions are approximately the same as those of CIE standard illuminants 13.5 CIE 1976 uniform chromaticity scale diagram; CIE 1976 UCS diagram (see ILV 845-03-53) uniform chromaticit
43、y scale diagram produced by plotting in rectangular co-ordinates v against u, quantities defined by the equations u = 4X/(X + 15Y + 3Z) = 4x/(-2x + 12y + 3) v = 9Y/(X + 15Y + 3Z) = 9y/(-2x + 12y + 3) X, Y, Z are the tristimulus values in the CIE 1931 or 1964 standard colorimetric systems, and x, y a
44、re the corresponding chromaticity coordinates of the colour stimulus considered. 3.6 colour temperature Tc (see ILV 845-03-49) temperature of a Planckian radiator whose radiation has the same chromaticity as that of a given stimulus 1This definition is a revision of the definition given in CIE 17.4-
45、1987. 2BS EN ISO 11664-2:2011EN ISO 11664-2:2011 (E)3.7 correlated colour temperature Tcp (see CIE 15:2004 Section 9.5) 2temperature of a Planckian radiator having the chromaticity nearest the chromaticity associated with the given spectral distribution on a diagram where the (CIE 1931 standard obse
46、rver based) u, 2/3v coordinates of the Planckian locus 3and the test stimulus are depicted NOTE 1: The concept of correlated colour temperature should not be used if the chromaticity of the test source differs more than C = (ut-uP)2+94(vt-vP)21/2= 5x10-2from the Planckian radiator, where ut,vtrefer
47、to the test source, uP,vPto the Planckian radiator. NOTE 2: Correlated colour temperature can be calculated by a simple minimum search computer program that searches for that Planckian temperature that provides the smallest chromaticity difference between the test chromaticity and the Planckian locu
48、s or by any other equivalent method. 43.8 daylight illuminant (see ILV 845-03-11) illuminant having the same, or nearly the same, relative spectral power distribution as a phase of daylight 3.9 illuminant (see ILV 845-03-10) radiation with a relative spectral power distribution defined over the wave
49、length range that influences object colour perception 3.10 Planckian radiator; blackbody (see ILV 845-04-04) ideal thermal radiator that absorbs completely all incident radiation, whatever the wavelength, the direction of incidence or the polarization. This radiator has, for any wavelength and any direction, the maximum spectral concentration of radiance for a thermal radiator in thermal equilibrium at a given temperature. 3.11 Planckian locus (see ILV 845-03-41) locus of points in a chromaticity diagram that represents chromaticities of the radiation
