1、IES LM-79-08Approved Method: Electrical and Photometric Measurements of Solid-State Lighting ProductsCopyright 2008 by the Illuminating Engineering Society.Approved by the IES Board of Directors December 31, 2007, as a Transaction of the Illuminating Engineering Society.All rights reserved. No part
2、of this publication may be reproduced in any form, in any electronic retrieval system or otherwise, without prior written permission of the IES.Published by the Illuminating Engineering Society, 120 Wall Street, New York, New York 10005.IES Standards and Guides are developed through committee consen
3、sus and produced by the IES Office in New York. Careful attention is given to style and accuracy. If any errors are noted in this document, please forward them to Rita Harrold, Director Educational and Technical Development, at the above address for verification and correction. The IES welcomes and
4、urges feedback and comments. ISBN # 978-0-87995-226-6Printed in the United States of America.IES LM-79-08DISCLAIMERIES publications are developed through the consensus standards development process approved by the American National Standards Institute. This process brings together volunteers represe
5、nting varied view-points and interests to achieve consensus on lighting recommendations. While the IES administers the pro-cess and establishes policies and procedures to promote fairness in the development of consensus, it makes no guaranty or warranty as to the accuracy or completeness of any info
6、rmation published herein. The IES disclaims liability for any injury to persons or property or other damages of any nature whatsoever, whether special, indirect, consequential or compensatory, directly or indirectly resulting from the publication, use of, or reliance on this documentIn issuing and m
7、aking this document available, the IES is not undertaking to render professional or other services for or on behalf of any person or entity. Nor is the IES undertaking to perform any duty owed by any person or entity to someone else. Anyone using this document should rely on his or her own independe
8、nt judgment or, as appropriate, seek the advice of a competent professional in determining the exercise of reasonable care in any given circumstances.The IES has no power, nor does it undertake, to police or enforce compliance with the contents of this docu-ment. Nor does the IES list, certify, test
9、 or inspect products, designs, or installations for compliance with this document. Any certification or statement of compliance with the requirements of this document shall not be attributable to the IES and is solely the responsibility of the certifier or maker of the statement.IES LM-79-08Prepared
10、 by the Subcommittee on Solid-State Lighting of the IES Testing Procedures CommitteeSolid-State Lighting SubcommitteeKevin Dowling, ChairYoshi Ohno, Technical CoordinatorR. C. BergerR. S. BergmanE. Bretschneider*J. R. CyreM. T. Dyble LC*S. D. Ellersick*D. Ellis*M. GratherP. J. Havens*A. Jackson*J. J
11、iao*C. F. Jones*M. A. Kalkas*D. KarambelasH. S. Kashani*P. F. Keebler*M. KotrebaiK. K. KruegerJ. P. MarellaM. J. MayerD. M. Mesh*C. C. MillerY. OhnoM. L. Riebling*M. B. Sapcoe*L. Stafford*G. Trott*R. C. TuttleJ. W. Yon *J. X. ZhangC. K. AndersenD. V. Andreyev*J. B. Arens L. M. AyersW.E. BeakesR. C.
12、BergerR. P. Bergin*R. S. BergmanJ. R. Cyre*R. C. Dahl*R. O. Daubach*K. J. DowlingD. EllisA.M. Foy*P. J. Franck*R. V. HeinischT. T. Hernandez*R. E. HoranD. E. Husby*J. Hospodarsky*J. Jiao*M. A. KalkasD. Karambelas M. KotrebaiK.K. KruegerB. Kuebler*E. Ladouceur*J. Lawton*L. E. Leetzow*K. C. Lerbs*R. E
13、. Levin*I. LewinR. Low*J. P. MarellaG. McKeeS. W. McKnight*D. C. Mertz*C. C. MillerB. MosherW. A. NewlandY. Ohno*D. W. Parkansky*D. N. Randolph D. RectorM. B. SapcoeD. C. Smith*R. C. Speck*L. Stafford*G. A. SteinbergN. Stuffer*T. G. Yahraus*J. X. Zhang* Advisory Member* Honorary MemberIES Testing Pr
14、ocedures CommitteeMichael Grather, ChairThis approved method has been developed in collaboration with the ANSI Solid State Lighting Joint Working Group C78-09 and C82-04.Special recognition to Yoshi Ohno for his technical assistance, review and collaboration.Contents1.0 Introduction . . . . . . . .
15、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.2 Genera
16、l . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.3 Nomenclature and Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12.0 Ambient
17、 Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18、 . 22.2 Air Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22.3 Thermal Conditions for Mounting SSL Products. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22.4 Air Movement . .
19、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.0 Power Supply Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.1 Waveshape of A
20、C power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23.2 Voltage Regulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24.0 Seasoning of SSL Product. .
21、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35.0 Stabilization of SSL Product . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36.0 Operating Orientation . .
22、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37.0 Electrical Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38.0 Electri
23、cal Instrumentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38.1 Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
24、. 38.2 Uncertainties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39.0 Test Methods for Total Luminous Flux measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49.1 Integrat
25、ing sphere with a spectroradiometer (Sphere-spectroradiometer system) . . . . . . . . . 49.1.1 Integrating sphere . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49.1.2 Sphere geometry . . . . . . . . . . . . . . . . . . . . . . .
26、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59.1.3 Principle of measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69.1.4 Spectroradiometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
27、. . . . . . . . . . . . . . . . . . . . . . . . . 79.1.5 Self-absorption correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79.1.6 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28、 . . . . . . . . . . . . . . . . . . 79.2 Integrating sphere with a photometer head (Sphere-photometer system) . . . . . . . . . . . . . . . . 79.2.1 Integrating sphere . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79.2.2 Sphere
29、 geometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79.2.3 Principle of measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89.2.4 Photometer head . . . . . . .
30、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89.2.5 Self-absorption correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89.2.6 Determination of f1, and Spectral Mismatch Correct
31、ion Factor . . . . . . . . . . . . . . . . . . . . . . . 99.2.7 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99.3 Goniophotometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
32、 . . . . . . . . . . . . . . . . . . . . . . . . . . . 99.3.1 Type of Goniometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99.3.2 Principle of Total Luminous Flux Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . .
33、 . . . . . . . . 99.3.3 Scanning resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109.3.4 Angle coverage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
34、09.3.5 Polarization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109.3.6 Photometer head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109.3.7 Calibr
35、ation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1010.0 Luminous Intensity Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1011.0 Luminous E
36、fficacy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11IES LM-79-0812.0 Test Methods for Color Characteristics of SSL Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1112.1 Method usin
37、g a sphere-spectroradiometer system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1112.2 Method using a spectroradiometer or colorimeter spatially scanned . . . . . . . . . . . . . . . . . . . 1112.3 Spectroradiometer parameters impacting measured color characteristics . . . .
38、. . . . . . . . . . 1212.4 Colorimetric calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1212.5 Spatial non-uniformity of chromaticity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
39、 1213.0 Uncertainty statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1314.0 Test Report . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
40、 . . . . . . . . . . 13References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Annex (Informative). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
41、 . . . . . . . . . . . . . . . . 15IES LM-79-08IES LM-79-081IES LM-79-08IES Approved Method for the Electrical and Photometric Measurements of Solid-State Lighting ProductsForewordThis approved method is a guide developed for the measurement of solid state lighting (SSL) products. While many other s
42、tandards for photometric mea-surements of light sources and luminaires are avail-able, these standards are separated for measure-ment of lamps or luminaires. Since the current SSL products are in the forms of luminaires or lamps, and LED light sources in the luminaires are not easily separated as re
43、placeable lamps, these existing stan-dards cannot be applied directly to SSL products. This necessitates the use of absolute photometry. See the annex in this document for a description of how absolute photometry varies from relative photometry, which has historically been the lighting industry stan
44、dard. Thus, this standard provides test methods addressing the requirements for measure-ment of SSL products. Since SSL technologies are still at their early stages, requirements for measure-ment conditions and appropriate measurement tech-niques may be subject to change at any time as the SSL techn
45、ologies advance. 1.0 INTRODUCTION1.1 ScopeThis approved method describes the procedures to be followed and precautions to be observed in performing reproducible measurements of total luminous flux, electrical power, luminous intensity distribution, and chromaticity, of solid-state lighting (SSL) pro
46、ducts for illumination purposes, under standard conditions. This approved method covers LED-based SSL products with control electronics and heat sinks incorporated, that is, those devices that require only AC mains power or a DC voltage power supply to operate. This document does not cover SSL produ
47、cts that require external operating circuits or external heat sinks (e.g., LED chips, LED packages, and LED modules). This document cov-ers SSL products in a form of luminaires (fixtures incorporating light sources) as well as integrated LED lamps (see section 1.3 f). This document does not cover fi
48、xtures designed for SSL products sold without a light source. This document describes test methods for individual SSL products, and does not cover the determination of the performance rating of products, in which individual variations among the products should be considered. 1.2 GeneralSSL products
49、as defined in this document utilize LEDs (including inorganic and organic LEDs) as the optical radiation sources to generate light for illumi-nation purposes. An LED is a p-n junction semicon-ductor device that emits incoherent optical radiation when biased in the forward direction. White light is produced by LEDs using two methods: visible spectra of two or more colors produced by LEDs are mixed, or the emission (in the blue or ultraviolet region) from LEDs is used to excite one or more phosphors to produce broadband emission in the visible region (Stokes emission). A general descriptio
