1、 Reference numberISO 11664-2:2007(E)CIE S 014-2/E:2006ISO 2007INTERNATIONAL STANDARD ISO11664-2CIE S 014-2/EFirst edition2007-10-15Corrected version2008-11-01Colorimetry Part 2: CIE standard illuminants Colorimtrie Partie 2: Illuminants CIE normaliss ISO 11664-2:2007(E) PDF disclaimer This PDF file
2、may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the re
3、sponsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-crea
4、tion parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 20
5、07 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 from either ISO at the address below or ISOs member body in the cou
6、ntry of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2007 All rights reservedISO 11664-2:2007(E) ISO 2007 All rights reserved iiiForeword ISO (the Internation
7、al Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been e
8、stablished has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standard
9、ization. ISO 11664-2 was prepared as Standard CIE S 014-2/E by the International Commission on Illumination, which has been recognized by the ISO Council as an international standardizing body. It was adopted by ISO under a special procedure which requires approval by at least 75 % of the member bod
10、es casting a vote, and is published as a joint ISO/CIE edition. The International Commission on Illumination (abbreviated as CIE from its French title) is an organization devoted to international cooperation and exchange of information among its member countries on all matters relating to the scienc
11、e and art of lighting. International Standard ISO 11664-2 was prepared by CIE Technical Committee 2-33 Reformulation of CIE Standard Illuminants A and D65. ISO 11664-2 was initially published by ISO as ISO 10526:2007, and has subsequently been renumbered to be part 2 of the ISO 11664 series. ISO 116
12、64 consists of the following parts, under the general title Colorimetry: Part 1: CIE standard colorimetric observers published previously as ISO 10527:2007, which has been cancelled Part 2: CIE standard illuminants published previously as ISO 10526:2007, which has been cancelled Part 4: CIE 1976 L*a
13、*b* Colour space StandardCIE S 014-2/E:2006Colorimetry - Part 2: CIE Standard Illuminants Colorimtrie - Partie 2: Illuminants normaliss CIE Farbmessung - Teil 2: CIE Normlichtarten CIE Standards are copyrighted and shall not be reproduced in any form, entirely or partly, without the explicit agreeme
14、nt 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 colorimetric system ISO 11664-2:2007(E) CIE S 014-2/E:2006 CIE 2006 All rights reserved ISO 2007 All rights reserved
15、 v 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 from CIE Central Bureau at the address below. CIE Central
16、 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/ CIE S 014-2/E:2006 CIE 2006 All rights reserved ISO 2007 All rights reserved viISO 11664-2:2007(E) CIE S 014-2/E:2006 CIE 2006 All rights reserved ISO 2007 All rights re
17、served viiFOREWORD Standards produced by the Commission Internationale de 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 acce
18、pted and agreed data, which can be taken, essentially unaltered, into universal 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 stand
19、ard, which was prepared by CIE Technical Committee 2-33, “Reformulation of 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 tho
20、se defined in earlier versions of these illuminants. TABLE OF CONTENTS FOREWORD vii 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 Experimen
21、tal basis. 5 5.3 Correlated colour temperature. 5 6. CIE SOURCES FOR PRODUCING 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: BIB
22、LIOGRAPHY (INFORMATIVE) . 7 *) Chairman of this TC was K. D. Mielenz (US), 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),
23、K. Mielenz (US), J. Moore (UK), Y. Ohno (US), A. Robertson (CA), J. Schanda (HU). CIE, 2006 ISO 11664-2:2007(E) COLORIMETRY - 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
24、of this International Standard, are as follows: 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 shou
25、ld be used in all applications of colorimetry 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
26、. CIE standard illuminant D65 should be used 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
27、spectral region, as a function of season, time 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 gi
28、ven in Table 1 of this International Standard. 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 tristimul
29、us values of reflected or transmitted object 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 stan
30、dard illuminants A and D65 described in this 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 gr
31、aphic arts and photography extensive use is also 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. D
32、ata and guidelines that facilitate such practice 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
33、that approximate the spectral power distributions 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 sourc
34、es that represent a particular illuminant more 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 repres
35、enting CIE standard illuminant D65. CIE S 014-2/E:2006 CIE 2006 All rights reserved ISO 2007 All rights reserved 1ISO 11664-2:2007(E) 2. NORMATIVE REFERENCES The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applie
36、s. For undated references, the latest edition of the referenced document (including any amendments) 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 spe
37、ctral quality of daylight simulators for visual appraisal and measurement of colour. CIE S 014-1/E:2006. Colorimetry Part 1: CIE standard colorimetric observers. ISO 11664-1:20073. DEFINITIONS For the purposes of this International Standard, the following definitions apply. These definitions are tak
38、en from CIE 17.4-1987, where other relevant terms will also be found. 3.1 chromaticity coordinates (see ILV 845-03-33) 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 chromaticit
39、y. NOTE 2: In the CIE 1931 and 1964 standard colorimetric systems, the chromaticity co-ordinates are represented 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
40、 colour stimuli 3.3 CIE standard illuminants illuminants A and D65 defined by the CIE in terms of relative spectral 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 illuminan
41、ts 13.5 CIE 1976 uniform chromaticity scale diagram; CIE 1976 UCS diagram (see ILV 845-03-53) uniform chromaticity 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/(-2
42、x + 12y + 3) X, Y, Z are the tristimulus values in the CIE 1931 or 1964 standard colorimetric systems, and x, y are 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
43、same chromaticity as that of a given stimulus 1This definition is a revision of the definition given in CIE 17.4-1987. CIE S 014-2/E:2006 CIE 2006 All rights reserved ISO 2007 All rights reserved 2ISO 11664-2:2007(E) 3.7 correlated colour temperature Tcp (see CIE 15:2004 Section 9.5) 2temperature of
44、 a Planckian radiator having the chromaticity nearest the chromaticity associated with the given spectral distribution on a diagram where the (CIE 1931 standard observer based) u, 2/3v coordinates of the Planckian locus 3and the test stimulus are depicted NOTE 1: The concept of correlated colour tem
45、perature 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 to the test source, uP,vPto the Planckian radiator. NOTE 2: Correlated colour temperature can be calculated by a simple minimum search
46、computer program that searches for that Planckian temperature that provides the smallest chromaticity difference between the test chromaticity and the Planckian locus or by any other equivalent method. 43.8 daylight illuminant (see ILV 845-03-11) illuminant having the same, or nearly the same, relat
47、ive 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 wavelength range that influences object colour perception 3.10 Planckian radiator; blackbody (see ILV 845-04-04) ideal thermal radiator tha
48、t 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 Pla
49、nckian locus (see ILV 845-03-41) locus of points in a chromaticity diagram that represents chromaticities of the radiation of Planckian radiators at different temperatures 3.12 primary light source (see ILV 845-07-01) surface or object emitting light produced by a transformation of energy 3.13 secondary light source (see ILV 845-07-02) surface or object which is not self-emitting but receives light and re-directs it, at least in part, by reflection or transmission 3.14 tristimulus values (of
