{"id":124989,"date":"2024-10-19T05:02:45","date_gmt":"2024-10-19T05:02:45","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/ies-lm-85-2014\/"},"modified":"2024-10-24T23:13:34","modified_gmt":"2024-10-24T23:13:34","slug":"ies-lm-85-2014","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/ies\/ies-lm-85-2014\/","title":{"rendered":"IES LM 85 2014"},"content":{"rendered":"

This document describes the procedures to be followed and precautions to be observed in performing accurate measurements of total luminous flux, total radiant flux (optical power), total photon flux, electrical power, luminous efficacy, color quantities, and wavelength characteristics of high-power light emitting diodes (LEDs) including white LEDs as well as single color LEDs. This document covers LED packages (defined in ANSI\/IES RP-16-10) including those with multiple chips and remote-phosphor LED packages. This document covers measurement under pulse operation as well as steady DC operation of LEDs, and in all cases, the thermal condition of LEDs refers to their junction temperature. The approved methods apply to laboratory measurements. This document does not cover LED arrays or modules, nor LED lighting products; it does not cover AC driven LEDs, and does not apply to measurements in LED manufacturer\u2019s production control nor relative measurements of LED thermal characteristics.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nCover
\n <\/td>\n<\/tr>\n
3<\/td>\nCopyright <\/td>\n<\/tr>\n
4<\/td>\nSubcommittee on Solid-State Lighting ofthe IES Testing Procedures Committee <\/td>\n<\/tr>\n
6<\/td>\nContents <\/td>\n<\/tr>\n
8<\/td>\nINTRODUCTION
1.0 SCOPE <\/td>\n<\/tr>\n
9<\/td>\n2.0 NORMATIVE REFERENCES
3.0 DEFINITIONS
3.1 Device Under Test (DUT)
3.2 Duv
3.3 Goniophotometer
3.4 Gonio-Colorimeter
3.5 Gonio-Spectroradiometer
3.6 Heat Sink
3.7 High-Power LED
3.8 National Metrology Institute (NMI)
3.9 Photometer Head
3.10 Remote Phosphor LED Package
3.11 Settling Time
3.12 Sphere-Photometer
3.13 Sphere-Spectroradiometer
3.14 Temperature-Controlled Platform (TCP) <\/td>\n<\/tr>\n
10<\/td>\n3.15 Thermal Chamber
4.0 PREPARATION FOR MEASUREMENTS
4.1 Seasoning
4.2 Operating Orientation
4.3 Thermal Conditions
5.0 METHODS OF MEASUREMENT UNDERPULSE-MODE OPERATION OF DUT
5.1 General
5.2 Single Pulse Mode <\/td>\n<\/tr>\n
12<\/td>\n5.3 Continuous Pulse Mode <\/td>\n<\/tr>\n
13<\/td>\n6.0 METHOD OF MEASUREMENT UNDERDC-MODE OPERATION OF DUT
6.1 General
6.2 Ambient Temperature Condition
6.3 Measurement Procedures <\/td>\n<\/tr>\n
14<\/td>\n7.0 OPTICAL MEASUREMENT ANDEQUIPMENT
7.1 Total Luminous Flux <\/td>\n<\/tr>\n
16<\/td>\n7.2 Luminous Efficacy
7.3 Total Radiant Flux
7.4 Total Photon Flux
7.5 Luminous Intensity Distribution
7.6 Color Quantities <\/td>\n<\/tr>\n
17<\/td>\n7.7 Wavelength Characteristics
7.8 Uncertainties <\/td>\n<\/tr>\n
18<\/td>\n8.0 ELECTRICAL MEASUREMENTAND EQUIPMENT
8.1 Pulse Current Source and Pulse Current\/Voltage Meter
8.2 Uncertainties
9.0 TEST REPORT <\/td>\n<\/tr>\n
19<\/td>\nREFERENCES <\/td>\n<\/tr>\n
20<\/td>\nANNEX A PULSE-MODE AND DC-MODEMETHODS FOR LED OPERATION
ANNEX B ESTIMATION OF Tj RISE ANDCORRECTION
B1 Analysis example for single pulse mode <\/td>\n<\/tr>\n
21<\/td>\nB2 Analysis example for continuous pulsemode
REFERENCES FOR ANNEX B <\/td>\n<\/tr>\n
22<\/td>\nANNEX C CAUTION FOR OPTICALMEASUREMENT INSTRUMENTSFOR PULSE-MODE METHODS
C1 Single Pulse Mode
C2 Continuous Pulse Mode
ANNEX D INTEGRATING SPHEREAND GONIOPHOTOMETER <\/td>\n<\/tr>\n
23<\/td>\nREFERENCES FOR ANNEX D
ANNEX E INTEGRATING SPHEREGEOMETRIES AND CALIBRATION METHODS <\/td>\n<\/tr>\n
25<\/td>\nANNEX F GENERAL DESIGNOF INTEGRATING SPHERES <\/td>\n<\/tr>\n
26<\/td>\nANNEX G SELF-ABSORPTION CORRECTION
ANNEX H CALIBRATION OF SPHERESPECTRORADIOMETER <\/td>\n<\/tr>\n
27<\/td>\nANNEX I. USE OF SPECTRORADIOMETER
REFERENCES FOR ANNEX I <\/td>\n<\/tr>\n
28<\/td>\nANNEX J OTHER SOURCES OF ERROR
ANNEX K SPHERE-PHOTOMETER SYSTEM <\/td>\n<\/tr>\n
29<\/td>\nREFERENCES FOR ANNEX K <\/td>\n<\/tr>\n
30<\/td>\nANNEX L GONIOPHOTOMETRIC METHODFOR TOTAL LUMINOUS FLUX <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

IES LM-85 Approved Method: Electrical and Photometric Measurements of High-Power LEDs<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
IES<\/b><\/a><\/td>\n2014<\/td>\n31<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":124991,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2665],"product_tag":[],"class_list":{"0":"post-124989","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-ies","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/124989","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/124991"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=124989"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=124989"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=124989"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}