INTERNATIONAL Reference number ISO 11664 2 2007(E) CIE S 014 2/E 2006 © ISO 2007 INTERNATIONAL STANDARD ISO 11664 2 CIE S 014 2/E First edition 2007 10 15 Corrected version 2008 11 01 Colorimetry — Pa[.]
INTERNATIONAL STANDARD ISO 11664-2 CIE S 014-2/E First edition 2007-10-15 Corrected version 2008-11-01 Colorimetry — Part 2: CIE standard illuminants Colorimétrie — Partie 2: Illuminants CIE normalisés Reference number ISO 11664-2:2007(E) CIE S 014-2/E:2006 © ISO 2007 ISO 11664-2:2007(E) PDF disclaimer This PDF file may contain embedded typefaces In accordance with Adobe's 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 responsibility of not infringing Adobe's 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-creation 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 2007 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 ISO's member body in the country 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 copyright@iso.org Web www.iso.org Published in Switzerland ii © ISO 2007 — All rights reserved ISO 11664-2:2007(E) Foreword ISO (the International 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 established 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 standardization 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 bodes 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 science 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 of the ISO 11664 series ISO 11664 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*b* Colour space © ISO 2007 — All rights reserved iii ISO 11664-2:2007(E) CIE S 014-2/E:2006 CIE S 014-2/E:2006 Standard Colorimetry Part 2: CIE Standard Illuminants Colorimétrie - Partie 2: Illuminants normalisés CIE Farbmessung - Teil 2: CIE Normlichtarten 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 Kegelgasse 27, A-1030 Vienna, Austria UDC: 535.65:006 535.643.2 © CIE 2006 — All rights reserved © ISO 2007 — All rights reserved Descriptor: CIE S 014-2/E:2006 Standardisation of colour measurement Standard colorimetric system v ISO 11664-2:2007(E) CIE S 014-2/E:2006 © 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 Bureau Kegelgasse 27 A-1030 Vienna Austria Tel.: +43 714 3187 Fax: +43 714 3187 18 e-mail: ciecb@ping.at Web: www.cie.co.at/ vi © CIE 2006 — All rights reserved © ISO 2007 — All rights reserved ISO 11664-2:2007(E) CIE S 014-2/E:2006 FOREWORD Standards produced by the Commission Internationale de l’Eclairage (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 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 standard, 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 those defined in earlier versions of these illuminants TABLE OF CONTENTS FOREWORD vii SCOPE NORMATIVE REFERENCES DEFINITIONS CIE STANDARD ILLUMINANT A 4.1 Definition 4.2 Theoretical basis 4.3 Supplementary notes CIE STANDARD ILLUMINANT D65 5.1 Definition 5.2 Experimental basis 5.3 Correlated colour temperature CIE SOURCES FOR PRODUCING CIE STANDARD ILLUMINANTS 6.1 CIE source A 6.2 Source for CIE standard illuminant D65 TABLE RELATIVE SPECTRAL POWER DISTRIBUTIONS OF CIE STANDARD ILLUMINANTS A AND D65 (wavelengths in standard air) ANNEX: BIBLIOGRAPHY (INFORMATIVE) *) 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), K Mielenz (US), J Moore (UK), Y Ohno (US), A Robertson (CA), J Schanda (HU) © CIE, 2006 © CIE 2006 — All rights reserved © ISO 2007 — All rights reserved vii ISO 11664-2:2007(E) CIE S 014-2/E:2006 COLORIMETRY - PART 2: CIE STANDARD ILLUMINANTS SCOPE This International Standard specifies two illuminants for use in colorimetry The illuminants, which are defined in clauses and 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 856 K CIE standard illuminant A should 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 500 K 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 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 given in Table of this International Standard Values are given at 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 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 not have the status of primary CIE standards accorded to the CIE standard 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 graphic 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 Data 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 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 sources 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 representing CIE standard illuminant D65 © CIE 2006 — All rights reserved © ISO 2007 — All rights reserved ISO 11664-2:2007(E) CIE S 014-2/E:2006 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 amendments) applies CIE 15:2004 Colorimetry, 3rd edition 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/E:2006 Colorimetry Part 1: CIE standard colorimetric observers [ISO 11664-1:2007] 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 845-03-33) 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 chromaticity NOTE 2: In the CIE 1931 and 1964 standard colorimetric systems, the chromaticity coordinates 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 colour stimuli 3.3 CIE standard illuminants illuminants A and D65 defined by the CIE in terms of relative spectral power distributions 3.4 CIE sources artificial sources, specified by the CIE, whose relative spectral power distributions are approximately the same as those of CIE standard illuminants 3.5 CIE 1976 uniform chromaticity scale diagram; CIE 1976 UCS diagram (see ILV 84503-53) 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/(-2x + 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 same chromaticity as that of a given stimulus This definition is a revision of the definition given in CIE 17.4-1987 © CIE 2006 — All rights reserved © ISO 2007 — All rights reserved ISO 11664-2:2007(E) CIE S 014-2/E:2006 3.7 correlated colour temperature Tcp (see CIE 15:2004 Section 9.5) temperature of 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 and 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 = [(u't-u'P)2+ ⋅(v't-v'P)2]1/2 = 5x10-2 from the Planckian radiator, where u't,v't refer to the test source, u'P,v'P to 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 locus or by any other equivalent method 3.8 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 wavelength 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 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 a colour stimulus) (see ILV 845-03-22) amounts of the three reference colour stimuli, in a given trichromatic system, required to match the colour of the stimulus considered NOTE: In the CIE standard colorimetric systems, the tristimulus values are represented by the symbols X, Y, Z and X10, Y10, Z10 This definition is a revision of the definition given in CIE 17.4-1987 In calculating the chromaticity coordinates of the Planckian radiator the c2 value according to ITS-90 has to be used (c2 = 1,4388) in Planck’s equation for standard air, but assuming n=1 CIE 15:2004 suggests one possible method recommended by Robertson (1968) © CIE 2006 — All rights reserved © ISO 2007 — All rights reserved ISO 11664-2:2007(E) CIE S 014-2/E:2006 CIE STANDARD ILLUMINANT A 4.1 Definition The relative spectral power distribution SA(λ) is defined by the equation 1,435 × 10 −1 848 × 560 ⎛ 560 ⎞ S A (λ ) = 100 ⎜ (1) ⎟ × 1,435 × 10 ⎝ λ ⎠ exp −1 848 λ where λ is the wavelength in nanometres and the numerical values in the two exponential terms are definitive constants originating from the first definition of Illuminant A in 1931 exp This spectral power distribution is normalized to the value 100 (exactly) at the wavelength 560 nm (exactly) CIE standard illuminant A is defined over the 300 nm to 830 nm spectral region NOTE 1: Table provides the relative spectral power distribution of CIE standard illuminant A between 300 nm and 830 nm to six significant digits, at one nm intervals For all practical purposes it suffices to use these tabulated values instead of the values calculated from equation NOTE 2: Despite the fact that equation is based on Planck's equation for vacuum, the wavelengths are to be taken as being in standard air (dry air at 15ºC and 101325 Pa, containing 0,03% by volume of carbon dioxide) This makes CIE standard illuminant A compatible with other CIE colorimetric and photometric data 4.2 Theoretical basis Equation is equivalent to and can be derived from the expression S(λ) = 100 Me,λ(λ,T) / Me,λ(560, T), (2) Me,λ(λ,T) = c1 λ-5 [exp(c2 /λT)- 1]-1, (3) where λ is the wavelength (in nanometres), and the ratio c2 /T is given by c2 /T = 1,435 x 107/ 848 nm (4) Since the numerical value of c1 cancels out of equation 2, this definition of CIE standard illuminant A involves no assumptions about the numerical values of c1, c2, and T other than the ratio defined in equation 4.3 Supplementary notes CIE standard illuminant A was originally defined in 1931 (CIE, 1931) as the relative spectral power distribution of a Planckian radiator of temperature TCIE 1931 = 848 K, (5) the value of the second radiation constant c2 then being taken as c2, CIE 1931 = 14 350 µm⋅K (6) This form of definition as given in equation was carefully chosen to ensure that CIE standard illuminant A was defined as a relative spectral power distribution and not as a function of temperature As explained in 4.2 above, the definition of the relative spectral power distribution has not changed since 1931 and equation simply expresses it in a general form What has changed is the temperature assigned to this distribution The value of c2 given in equation and used by the CIE in 1931 is different from the respective values, c2, ITS-27 = 14 320 µm⋅K, c2,IPTS-48 = 14 380 µm⋅K, and c2,IPTS-68 = c2,ITS-90 = 14 388 µm⋅K, that were assigned to this constant in the International Temperature Scales of 1927, 1948, 1968 and © CIE 2006 — All rights reserved © ISO 2007 — All rights reserved ISO 11664-2:2007(E) CIE S 014-2/E:2006 1990 Although this has had no effect on the relative spectral power distribution of CIE standard illuminant A, the correlated colour temperatures of sources recommended for laboratory realizations have been different, over the years, depending on the values of c2 used As may be seen from equation 4, the colour temperatures associated with CIE standard illuminant A on the various international temperature scales referred to above were T27 = 842 K, T48 = 854 K, and T68 = T90 = 856 K, respectively (see 6.1) CIE STANDARD ILLUMINANT D65 5.1 Definition The relative spectral power distribution SD65(λ) of CIE standard illuminant D65 is defined by the values given in Table which are presented at nm intervals over the wavelength range from 300 nm to 830 nm; the wavelength values given apply in standard air If required, other intermediate values may be derived by linear interpolation from the published values 5.2 Experimental basis The relative spectral power distribution of CIE standard illuminant D65 is based on experimental measurements of daylight in the wavelength range 330 nm to 700 nm, with extrapolations to 300 nm and 830 nm, as reported by Judd, MacAdam, and Wyszecki (Judd et al., 1964) The extrapolated values are believed to be sufficiently accurate for conventional colorimetric purposes, but are not recommended for non-colorimetric use 5.3 Correlated colour temperature CIE standard illuminant D65 has a nominal correlated colour temperature of 500 K The exact value depends on the convention used to assign a correlated colour temperature to a stimulus whose chromaticity, as in this case, does not fall precisely on the Planckian locus NOTE: Using the value of c2 = 14 388 µm⋅K specified in the International Temperature Scale of 1990 and the definition given in 3.7 that lines of constant correlated colour temperature are normal to the Planckian locus in a chromaticity diagram in which 2v'/3 is plotted against u', where u', v' are the co-ordinates used in the CIE 1976 uniform chromaticity scale diagram, the correlated colour temperature of CIE standard illuminant D65 is found to be 503 K if it is computed according to the definition in 3.7 using the data of Table This difference from the nominal temperature of the CIE standard illuminant was judged to be insignificantly small CIE SOURCES FOR PRODUCING CIE STANDARD ILLUMINANTS 6.1 CIE source A CIE standard illuminant A can be realized by CIE source A, defined as a gas-filled, tungstenfilament lamp operating at a correlated colour temperature T= 2848 c K 14350 (7) on a radiation temperature scale specified by a given value of the second radiation constant c2 in µm·K A lamp with a fused-quartz envelope or window is recommended if the spectral power distribution of the ultraviolet radiation of CIE standard illuminant A is to be realized more accurately Information on the procedure used to derive D65 values is given in CIE 15:2004 © CIE 2006 — All rights reserved © ISO 2007 — All rights reserved ISO 11664-2:2007(E) CIE S 014-2/E:2006 The value of c2 specified in the International Temperature Scale of 1990 (ITS-90) is c2,ITS-90 = 14 388 µm⋅K, and thus the correlated colour temperature of CIE source A on this scale is given by T90 = 14388 × 2848 K = 2856K (approximately) 14350 (8) Sources calibrated on earlier temperature scales may have to be recalibrated in order to conform with the ITS-90 This description of CIE source A is supplementary to, and not part of, the definition of CIE standard illuminant A 6.2 Source for CIE standard illuminant D65 At present, there is no CIE recommended source for realizing CIE standard illuminant D65 The quality of sources intended for laboratory realization of CIE standard illuminant D65 can be assessed by a method described in ISO 23603:2005/CIE S012:2004 6 CIE is studying recent developments in daylight simulators with a view to recommending a practical artificial source for CIE standard illuminant D65 in the near future Readers of this standard should consult CIE Publication Lists for possible amendments and new recommendations © CIE 2006 — All rights reserved © ISO 2007 — All rights reserved ISO 11664-2:2007(E) CIE S 014-2/E:2006 TABLE RELATIVE SPECTRAL POWER DISTRIBUTIONS OF CIE STANDARD ILLUMINANTS A AND D65 (wavelengths in standard air) λ / nm 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 © CIE 2006 — All rights reserved © ISO 2007 — All rights reserved SA(λ) 0,930 483 0,967 643 1,005 97 1,045 49 1,086 23 1,128 21 1,171 47 1,216 02 1,261 88 1,309 10 1,357 69 1,407 68 1,459 10 1,511 98 1,566 33 1,622 19 1,679 59 1,738 55 1,799 10 1,861 27 1,925 08 1,990 57 2,057 76 2,126 67 2,197 34 2,269 80 2,344 06 2,420 17 2,498 14 2,578 01 2,659 81 2,743 55 2,829 28 2,917 01 3,006 78 3,098 61 3,192 53 3,288 57 3,386 76 3,487 12 3,589 68 3,694 47 3,801 52 3,910 85 4,022 50 4,136 48 4,252 82 4,371 56 4,492 72 4,616 31 SD65(λ) 0,0341 000 0,360 140 0,686 180 1,012 22 1,338 26 1,664 30 1,990 34 2,316 38 2,642 42 2,968 46 3,294 50 4,988 65 6,682 80 8,376 95 10,071 11,765 13,459 15,153 16,847 18,541 20,236 21,917 23,599 25,281 26,963 28,644 30,326 32,008 33,690 35,371 37,053 37,343 37,632 37,922 38,211 38,501 38,790 39,080 39,369 39,659 39,948 40,445 40,941 41,437 41,934 42,430 42,926 43,422 43,919 44,415 λ / nm 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 SA(λ) 4,742 38 4,870 95 5,002 04 5,135 68 5,271 89 5,410 70 5,552 13 5,696 22 5,842 98 5,992 44 6,144 62 6,299 55 6,457 24 6,617 74 6,781 05 6,947 20 7,116 21 7,288 11 7,462 92 7,640 66 7,821 35 8,005 01 8,191 67 8,381 34 8,574 04 8,769 80 8,968 64 9,170 56 9,375 61 9,583 78 9,795 10 10,009 10,227 10,448 10,672 10,899 11,130 11,364 11,601 11,841 12,085 12,332 12,582 12,836 13,093 13,354 13,618 13,885 14,156 14,430 SD65(λ) 44,911 45,084 45,257 45,429 45,602 45,775 45,947 46,120 46,293 46,465 46,638 47,183 47,728 48,273 48,818 49,363 49,908 50,453 50,998 51,544 52,089 51,877 51,666 51,455 51,243 51,032 50,820 50,609 50,398 50,186 49,975 50,442 50,910 51,377 51,844 52,311 52,779 53,246 53,713 54,180 54,648 57,458 60,269 63,080 65,890 68,701 71,512 74,322 77,133 79,944 ISO 11664-2:2007(E) CIE S 014-2/E:2006 TABLE (continued) λ / nm 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 SA(λ) 14,708 14,989 15,273 15,561 15,853 16,148 16,446 16,748 17,053 17,362 17,675 17,991 18,310 18,633 18,960 19,290 19,624 19,961 20,302 20,647 20,995 21,346 21,701 22,060 22,422 22,788 23,157 23,530 23,907 24,287 24,670 25,058 25,448 25,843 26,241 26,642 27,047 27,456 27,868 28,283 28,702 29,125 29,551 29,981 30,414 30,850 31,290 31,734 32,181 32,632 SD65(λ) 82,754 83,628 84,501 85,374 86,247 87,120 87,993 88,866 89,739 90,612 91,486 91,680 91,875 92,069 92,264 92,458 92,653 92,848 93,042 93,237 93,431 92,756 92,081 91,406 90,732 90,057 89,382 88,707 88,032 87,357 86,682 88,500 90,318 92,137 93,955 95,773 97,591 99,410 101,228 103,047 104,865 106,079 107,294 108,508 109,722 110,936 112,151 113,365 114,579 115,794 λ / nm 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 SA(λ) 33,085 33,543 34,004 34,468 34,935 35,406 35,881 36,358 36,839 37,324 37,812 38,303 38,797 39,295 39,796 40,300 40,807 41,318 41,832 42,349 42,869 43,392 43,919 44,448 44,981 45,517 46,056 46,598 47,143 47,691 48,242 48,796 49,353 49,913 50,476 51,041 51,610 52,181 52,756 53,333 53,913 54,495 55,081 55,669 56,260 56,853 57,450 58,048 58,650 59,254 SD65(λ) 117,008 117,088 117,169 117,249 117,330 117,410 117,490 117,571 117,651 117,732 117,812 117,517 117,222 116,927 116,632 116,336 116,041 115,746 115,451 115,156 114,861 114,967 115,073 115,180 115,286 115,392 115,498 115,604 115,711 115,817 115,923 115,212 114,501 113,789 113,078 112,367 111,656 110,945 110,233 109,522 108,811 108,865 108,920 108,974 109,028 109,082 109,137 109,191 109,245 109,300 © CIE 2006 — All rights reserved © ISO 2007 — All rights reserved ISO 11664-2:2007(E) CIE S 014-2/E:2006 TABLE (continued) λ / nm 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 SA(λ) 59,861 60,470 61,082 61,696 62,312 62,932 63,553 64,177 64,803 65,432 66,063 66,696 67,332 67,970 68,610 69,252 69,896 70,543 71,192 71,843 72,495 73,150 73,807 74,466 75,127 75,790 76,455 77,121 77,790 78,460 79,132 79,806 80,482 81,159 81,838 82,519 83,201 83,885 84,571 85,258 85,947 86,637 87,328 88,021 88,716 89,412 90,109 90,808 91,508 92,209 © CIE 2006 — All rights reserved © ISO 2007 — All rights reserved SD65(λ) 109,354 109,199 109,044 108,888 108,733 108,578 108,423 108,268 108,112 107,957 107,802 107,501 107,200 106,898 106,597 106,296 105,995 105,694 105,392 105,091 104,790 105,080 105,370 105,660 105,950 106,239 106,529 106,819 107,109 107,399 107,689 107,361 107,032 106,704 106,375 106,047 105,719 105,390 105,062 104,733 104,405 104,369 104,333 104,297 104,261 104,225 104,190 104,154 104,118 104,082 λ / nm 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 SA(λ) 92,912 93,615 94,320 95,026 95,733 96,442 97,151 97,862 98,573 99,286 100,000 100,715 101,430 102,146 102,864 103,582 104,301 105,020 105,741 106,462 107,184 107,906 108,630 109,354 110,078 110,803 111,529 112,255 112,982 113,709 114,436 115,164 115,893 116,622 117,351 118,080 118,810 119,540 120,270 121,001 121,731 122,462 123,193 123,924 124,655 125,386 126,118 126,849 127,58 128,312 SD65(λ) 104,046 103,641 103,237 102,832 102,428 102,023 101,618 101,214 100,809 100,405 100,000 99,633 99,266 98,900 98,533 98,167 97,800 97,433 97,067 96,700 96,334 96,279 96,225 96,170 96,115 96,061 96,006 95,951 95,897 95,842 95,788 95,077 94,367 93,657 92,947 92,236 91,526 90,816 90,106 89,395 88,685 88,817 88,949 89,081 89,213 89,345 89,478 89,610 89,742 89,874 ISO 11664-2:2007(E) CIE S 014-2/E:2006 TABLE (continued) λ / nm 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 10 SA(λ) 129,043 129,774 130,505 131,236 131,966 132,697 133,427 134,157 134,887 135,617 136,346 137,075 137,804 138,532 139,260 139,988 140,715 141,441 142,167 142,893 143,618 144,343 145,067 145,790 146,513 147,235 147,957 148,678 149,398 150,117 150,836 151,554 152,271 152,988 153,704 154,418 155,132 155,845 156,558 157,269 157,979 158,689 159,397 160,104 160,811 161,516 162,221 162,924 163,626 164,327 SD65(λ) 90,006 89,965 89,924 89,884 89,843 89,802 89,761 89,721 89,680 89,639 89,599 89,409 89,219 89,029 88,838 88,648 88,458 88,268 88,078 87,888 87,698 87,257 86,816 86,375 85,934 85,493 85,052 84,611 84,170 83,729 83,288 83,329 83,370 83,411 83,452 83,493 83,535 83,576 83,617 83,658 83,699 83,332 82,964 82,597 82,230 81,863 81,495 81,128 80,761 80,394 λ / nm 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 SA(λ) 165,028 165,726 166,424 167,121 167,816 168,510 169,203 169,895 170,586 171,275 171,963 172,650 173,335 174,019 174,702 175,383 176,063 176,741 177,419 178,094 178,769 179,441 180,113 180,783 181,451 182,118 182,783 183,447 184,109 184,770 185,429 186,087 186,743 187,397 188,050 188,701 189,350 189,998 190,644 191,288 191,931 192,572 193,211 193,849 194,484 195,118 195,750 196,381 197,009 197,636 SD65(λ) 80,026 80,045 80,064 80,083 80,101 80,120 80,139 80,158 80,177 80,195 80,214 80,420 80,627 80,833 81,039 81,246 81,452 81,658 81,865 82,071 82,277 81,878 81,479 81,079 80,680 80,281 79,881 79,482 79,082 78,683 78,284 77,427 76,571 75,715 74,859 74,002 73,146 72,290 71,433 70,577 69,721 69,910 70,098 70,287 70,476 70,665 70,854 71,042 71,231 71,420 © CIE 2006 — All rights reserved © ISO 2007 — All rights reserved ISO 11664-2:2007(E) CIE S 014-2/E:2006 TABLE (continued) λ / nm 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 SA(λ) 198,261 198,884 199,506 200,125 200,743 201,359 201,972 202,584 203,195 203,803 204,409 205,013 205,616 206,216 206,815 207,411 208,006 208,599 209,189 209,778 210,365 210,949 211,532 212,112 212,691 213,268 213,842 214,415 214,985 215,553 216,120 216,684 217,246 217,806 218,364 218,920 219,473 220,025 220,574 221,122 221,667 222,210 222,751 223,290 223,826 224,361 224,893 225,423 225,951 226,477 © CIE 2006 — All rights reserved © ISO 2007 — All rights reserved SD65(λ) 71,609 71,883 72,157 72,431 72,705 72,979 73,253 73,527 73,801 74,075 74,349 73,074 71,800 70,525 69,251 67,976 66,702 65,427 64,153 62,878 61,604 62,432 63,260 64,088 64,916 65,744 66,573 67,401 68,229 69,057 69,885 70,405 70,925 71,446 71,966 72,486 73,006 73,526 74,046 74,566 75,087 73,937 72,788 71,638 70,489 69,339 68,190 67,041 65,891 64,742 λ / nm 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 SA(λ) 227,000 227,522 228,041 228,558 229,073 229,585 230,096 230,604 231,110 231,614 232,115 232,615 233,112 233,606 234,099 234,589 235,078 235,564 236,047 236,529 237,008 237,485 237,959 238,432 238,902 239,370 239,836 240,299 240,760 241,219 241,675 242,130 242,582 243,031 243,479 243,924 244,367 244,808 245,246 245,682 246,116 246,548 246,977 247,404 247,829 248,251 248,671 249,089 249,505 249,918 SD65(λ) 63,592 61,875 60,157 58,440 56,722 55,005 53,288 51,570 49,853 48,135 46,418 48,456 50,495 52,534 54,573 56,611 58,650 60,689 62,728 64,766 66,805 66,463 66,120 65,778 65,436 65,094 64,751 64,409 64,067 63,725 63,382 63,474 63,567 63,659 63,751 63,843 63,935 64,027 64,119 64,211 64,304 63,818 63,333 62,848 62,363 61,877 61,392 60,907 60,422 59,937 11 ISO 11664-2:2007(E) CIE S 014-2/E:2006 TABLE (continued) λ / nm 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 12 SA(λ) 250,329 250,738 251,144 251,548 251,950 252,350 252,747 253,142 253,535 253,925 254,314 254,700 255,083 255,465 255,844 256,221 SD65(λ) 59,451 58,702 57,953 57,204 56,454 55,705 54,956 54,206 53,457 52,708 51,959 52,507 53,055 53,603 54,151 54,699 λ / nm 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 SA(λ) 256,595 256,968 257,338 257,706 258,071 258,434 258,795 259,154 259,511 259,865 260,217 260,567 260,914 261,259 261,602 SD65(λ) 55,248 55,796 56,344 56,892 57,440 57,727 58,015 58,302 58,589 58,876 59,163 59,450 59,738 60,025 60,312 © CIE 2006 — All rights reserved © ISO 2007 — All rights reserved