1、BRITISH STANDARD BS ISO 23603:2005 Standard method of assessing the spectral quality of daylight simulators for visual appraisal and measurement of colour ICS 17.180.20 BS ISO 23603:2005 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 3 Octob
2、er 2005 BSI 3 October 2005 ISBN 0 580 46642 6 National foreword This British Standard reproduces verbatim ISO 23603:2005 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee CPL/34, Lamps and related equipment, which has the resp
3、onsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK. A list
4、 of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspond
5、ence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. 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 does not of it
6、self confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii to viii, pages 1 to 19 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendment
7、s issued since publication Amd. No. Date Comments Reference number ISO 23603:2005(E) CIE S 012/E:2004INTERNATIONAL STANDARD ISO 23603 CIE S 012/E First edition 2005-08-01 Standard method of assessing the spectral quality of daylight simulators for visual appraisal and measurement of colour Mthode no
8、rmalise dvaluation de la qualit spectrale des simulateurs de lumire du jour pour le jugement visuel et la mesure des couleurs BS ISO 23603:2005ii BS ISO 23603:2005 iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member
9、 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 established has the right to be represented on that committee. International organizations, governmental
10、 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 standardization. ISO 23603 was prepared as Standard CIE S 012/E by the International Commission on Illumination
11、, 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 bodes casting a vote, and is published as a joint ISO/CIE edition. The International Commission on Illuminatio
12、n (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 science and art of lighting. ISO 23603 was prepared by CIE Technical Committee 1-53 A standard method for assessi
13、ng the quality of daylight simulators. iv vStandardStandard Method of Assessing the Spectral Quality of Daylight Simulators for Visual Appraisal and Measurement of Colour Mthode normalise dvaluation de la qualit spectrale des simulateurs de lumire du jour pour le jugement visuel et la mesure des cou
14、leurs Standardmethoden zur Bewertung der spektralen Qualitt von Tageslichtsimulatoren fr visuelle Beurteilung und Farbmessung CIE Standards 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 012/E:2
15、004 Kegelgasse 27, A-1030 Vienna, Austria UDC: 535.65 Descriptor: Colorimetry 612.843.31 Colour vision CIE S 012/E:2004 BS ISO 23603:2005vi viiFOREWORD Standards produced by the Commission Internationale de lEclairage (CIE) are a concise documentation of data defining aspects of light and lighting,
16、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 universal standard systems. This International Standard has been prepared by CIE Technical Commit
17、tee 1-53*, “A standard method for assessing the quality of daylight simulators“, and was approved by the National Committees of the CIE. Observed colours of objects depend on the illumination of the objects and the results of colour measurements may depend on the illumination used in the measurement
18、. The CIE has standardized the spectral power distributions of several phases of daylight for use in observing and measuring colour. For practical applications in colour technology, illuminators are designed to illuminate specimens with light simulating one or more of these CIE illuminants. The accu
19、racy of simulation has an important bearing on the accuracy of visual matches and colour measurements. CIE Technical Committee TC1.3 studied methods of assessing the spectral quality of daylight simulators and issued recommendations in the publication: CIE 51-1981 A method for assessing the quality
20、of daylight simulators for colorimetry. That publication established the limits of the deviation from the ideal colour that initially qualified a simulator for consideration and established a test method to assign quality grades to simulators. The limits and test method expressed in that publication
21、 have been used throughout the world, since 1981. The historical development of the methodology is described in that publication. This standard is based on the principles and methods described in CIE 51-1981. There are several new features, based on recent research and standardization (JIS, 2000; Mc
22、Camy, 1996 and 1999). CIE 51-1981 treated CIE Illuminants D55, and D75 as well as CIE standard illuminant D65. CIE illuminant D50, which is widely used in photographic and colour printing technologies, was included in a later supplement to CIE 51-1981 (CIE 135/3-1999 Visual metamers for assessing th
23、e quality of CIE illuminant D50) and is also included in this standard. CIE 51.2-1999 includes both the original publication and the supplement. CIE 51.2- 1999 specified limits on colour deviation graphically; this standard specifies the same limits numerically. CIE 51.2-1999 listed wavelength-depen
24、dent constants for visible-range assessment over the wavelength range from 400 nm to 700 nm; this standard lists those constants over the range from 380 nm to 780 nm. The constants and wavelength range for ultraviolet-range assessment in CIE 51.2-1999 are retained in this standard. For the special p
25、urpose of ultraviolet-range assessment, the wavelength range from 400 nm to 700 nm adequately represents the visible spectrum, because all of the fluorescence emission considered is within that range. * Chairman of this TC was C. S. McCamy (US), members were: D. H. Alman (US), R. Hirschler (BR), T.
26、Ichijo (JP), J. T. C. van Kemenade (NL), M. R. Luo (UK), M. Pointer (UK), J. Schanda (HU), and J. C. Zwinkels (CA). BS ISO 23603:2005viii FOREWORD vii INTRODUCTION 1 1. SCOPE 1 2. NORMATIVE REFERENCES 1 3. DEFINITIONS AND SYMBOLS 1 4. REQUIREMENTS 3 4.1 Chromaticity tolerance 3 4.2 Quality grade 3 5
27、. TEST METHODS 3 5.1 Spectroradiometry 3 5.2 Computations 3 5.2.1 Normalization 3 5.2.2 Chromaticity deviation 4 5.2.3 Virtual metameric pairs 4 5.2.4 Computing metamerism indices 4 6. TABLES 6 ANNEX: BIBLIOGRAPHY (INFORMATIVE) 18 BS ISO 23603:20051INTRODUCTION The purpose of this assessment is to q
28、uantify the suitability of the spectral irradiance distribution of a practical simulator of CIE daylight illuminant D50, D55, D75 or CIE standard daylight illuminant D65 for the visual appraisal or measurement of colours of fluorescent or non-fluorescent specimens. The basis for the assessment is th
29、e special metamerism index for change in illuminant, using pairs of virtual (rather than real) specimens specified by their reflecting and fluorescing properties. The pairs of specimens are metameric matches under the CIE daylight illuminant, when evaluated with the CIE 1964 standard colorimetric ob
30、server. The method described in this standard quantifies the mismatch when the pairs of virtual specimens are illuminated by the simulator under test and evaluated by the same standard observer. A visible range metamerism index is derived to quantify the suitability of the simulator for the visible
31、wavelength range. An ultraviolet range metamerism index is derived, using a different set of virtual metameric pairs, each pair having a fluorescent and a non-fluorescent specimen, which spectrally match for the CIE daylight illuminant and standard colorimetric observer. The non- fluorescent specime
32、n in each pair is specified by its spectral radiance factor. The fluorescent specimen in each pair is specified by its spectral reflected radiance factor, relative spectral distribution of radiance due to fluorescence, and spectral external radiant efficiency of the fluorescent specimen. The ultravi
33、olet range metamerism index quantifies the mismatch due to fluorescence resulting from the use of the simulator and the standard observer. 1. SCOPE This International Standard specifies a method of assessing the spectral quality of the irradiance provided by a daylight simulator to be used for visua
34、l appraisal of colours or for colour measurements and a method of assigning a quality grade to the simulator. It specifies the maximum permissible deviation of the chromaticity of the simulator from the chromaticity of the CIE standard daylight illuminant or CIE daylight illuminant being simulated,
35、for a simulator to be graded by this method. 2. NORMATIVE REFERENCES The following standards and other documents contain provisions which, through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All publications are subje
36、ct to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the publications indicated below. Members of CIE, the International Electrotechnical Commission (IEC) and the International Organisation for Standard
37、ization (ISO) maintain registers of currently valid international standards. CIE 15:2004. Colorimetry, 3 rdedition. CIE 17.4-1987. International Lighting Vocabulary, ILV (joint IEC/CIE publication) CIE 51.2-1999. A method for assessing the quality of daylight simulators for colorimetry. CIE 63-1984.
38、 The spectroradiometric measurement of light sources. ISO 10526/CIE S 005-1999. CIE standard illuminants for colorimetry. ISO/CIE 10527-1991. Colorimetric observers. 3. DEFINITIONS AND SYMBOLS For the purposes of this standard, the following definitions and symbols apply. Definitions and symbols use
39、d in this standard, but not listed here, conform to CIE 17.4-1987 and CIE 15:2004. BS ISO 23603:20052 3.1 simulator* device that provides spectral irradiance approximating that of a CIE standard daylight illuminant or CIE daylight illuminant, for visual appraisal or measurement of colours 3.2 qualit
40、y grade* class of quality of simulation of the spectral irradiance of a CIE standard illuminant or CIE illuminant by a simulator, expressed as a letter symbol A, B, C, D, or E, with class A representing the highest quality 3.3 reflectance factor (at a surface element, for the part of the reflected r
41、adiation contained in a given cone with the apex at the surface element, and for incident radiation of a given spectral composition, polarization and geometrical distribution) (see ILV 845-04-64) ratio of the radiant or luminous flux reflected in the directions delimited by the given cone to that re
42、flected in the same directions by a perfect reflecting diffuser identically irradiated or illuminated Symbol: R 3.4 reflected radiance factor* (at a representative element of the surface of a non-self- radiating medium, in a given direction, under specified conditions of irradiation) ratio of the ra
43、diance due to reflection of the medium in the given direction to the radiance of a perfect reflecting diffuser identically irradiated Symbol: R3.5 fluorescent radiance factor* (at a surface element of a non-self-radiating medium, in a given direction, under specified conditions of irradiation) ratio
44、 of the radiance due to fluorescence of the specimen to the radiance of the perfect reflecting diffuser identically irradiated and viewed Symbol: F3.6 total radiance factor* (at a representative element of the surface of a non-self-radiating medium, in a given direction, under specified conditions o
45、f irradiation) sum of the reflected radiance factor R and the fluorescent radiance factor FSymbol: T3.7 fluorescent radiant efficiency* ratio of the radiant power emitted by fluorescence for a given spectral excitation, to the spectral radiant excitation power irradiating the fluorescent material 3.
46、8 spectral external radiant efficiency of the fluorescent specimen* ratio of the total radiant power emitted by the fluorescent process for an excitation wavelength to the total radiant excitation power irradiating the fluorescent material Symbol: Q(), where is the excitation wavelength 3.9 total ra
47、diant excitation* total radiant power irradiating the specimen that is capable of exciting fluorescence Symbol: N 3.10 relative spectral distribution of radiance due to fluorescence* ratio of the spectral distribution of radiance due to fluorescence to the sum of the tabulated values of this distrib
48、ution, i.e. F() = 1,0 Symbol: F() *New definition. Not in CIE 17.4-1987. BS ISO 23603:200534. REQUIREMENTS 4.1 Chromaticity tolerance The first requirement of a simulator is that the light it provides be nearly the same chromaticity as the light of the CIE daylight illuminant. For a daylight simulat
49、or to qualify for classification by this standard, the CIE 1976 u 10 v 10chromaticity difference between the light of the simulator and that of the CIE daylight illuminant shall not exceed 0,015. (See CIE 15:2004.) 4.2 Quality grade The chromaticity requirement described in paragraph 4.1 having been met, and a metamerism index having been determined by the method of this standard, the spectral quality of simulation shall be classified, using a letter symbol
