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IES LM 79 2019

IES LM 79 2019

$27.08

ANSI IES LM-79-19 Approved Method: Optical and Electrical Measurements of Solid-State Lighting Products

Published By Publication Date Number of Pages
IES 2019 35
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This approved method describes the procedures to be followed and precautions to be observed in performing reproducible accurate measurements of total luminous, radiant, or photon flux; electrical power; system efficacy; luminous, radiant, or photon intensity distribution; and color quantities and/or spectrum of solid-state lighting (SSL) products for illumination purposes, under standard conditions. This approved method covers LED luminaires, OLED luminaires, integrated LED lamps, integrated OLED lamps, non-integrated LED lamps operated with a driver designated by a manufacturer’s identification number or by a defined [ANSI] reference circuit, and LED light engines, all of which will be referred to as SSL products or device under test (DUT). SSL products, excluding non-integrated LED lamps, are intended to directly connect to AC mains power or to a DC voltage power supply to operate. This document does not cover SSL products that require external heat sinks, nor does it cover components of other than this recommended temperature constitute a nonstandard condition and shall be noted in the test report.

PDF Catalog

PDF Pages PDF Title
1 Cover
4 Copyright
5 DISCLAIMER
7 CONTENTS
11 Foreword
1.0 Introduction and Scope
1.1 Introduction
1.2 Scope
12 2.0 Normative References
3.0 Definitions
3.1 acceptance interval
3.2 current crest factor
3.3 tolerance interval
4.0 Physical and EnvironmentalTest Conditions
4.1 General
4.2 Temperature
13 4.3 Airflow
4.4 Thermal Conditions for Mounting SSLProducts
4.5 Vibration
4.6 Stray Light
14 4.7 Humidity
5.0 Electrical Test Conditions
5.1 Power Supply Requirements
5.2 Test and Reference Circuit Requirements
15 5.3 Electrical Measurement InstrumentCalibration
16 5.4 Electrical Settings
6.0 Test Preparation
6.1 DUT Identification
6.2 DUT Handling
6.3 Seasoning
17 6.4 Pre-burn and Stabilization
6.5 Operating Position and Orientation
6.6 Optical and Electrical Waveforms
7.0 Total Luminous Flux andIntegrated Optical Measurements
7.1 General
7.2 Integrating Sphere Systems
18 7.3 Angular Integration Systems
20 8.0 Luminous Intensity or OpticalAngular Distribution Measurement
8.1 General
8.2 Photometer and SpectroradiometerCharacteristics
8.3 Test Distance
8.4 Goniometer Alignment
21 9.0 Chromaticity UniformityMeasurements
9.1 General
9.2 Angular Resolution
9.3 Angular Range
9.4 Angular Color Uniformity
9.5 Signal Limit and Verification
22 10.0 Measurement Uncertainty
11.0 Reporting Requirements
11.1 Typical Report Content
23 11.2 Nonstandard Conditions or OperatingProcedures
Annex A – Airflow Considerationsfor Testing SSL Products
24 Annex B – High FrequencyCurrent and MeasurementCircuit Capacitance
26 Annex C – Power Supply Resistanceand Inductance Dependency
27 Annex D – Tolerance Interval vs.Acceptance Interval
29 Annex E – Benefits of WaveformMeasurement
Annex F – Lower Luminous Intensityfor Chromaticity Uniformity
32 References

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IES LM 79 2019
$27.08