Approved Method: Characterization of Optical and Electrical Properties of Solid-State Lighting Products as a Function of Temperature

Characterization of Optical and Electrical Properties of Solid-State Lighting Products as a Function of Temperature

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ANSI/IES LM-82-20
Document Type: Lighting Measurement and Testing (LM)

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SKU: ANSI/IES LM-82-20 Category: Tag:

Product Description

Approved American National StandardThe performance (e.g., luminous flux, life) of light emitting diodes (LEDs) depends strongly on the temperature at the LED junction, and this temperature can vary depending on how the LED is integrated into the luminaire and on the application environment. LED light engines and integrated LED lamps are used in many different types of luminaires, including those for decorative lighting and non-directional applications. This document establishes consistent methods of measurement and data presentation for ease of interpretation and comparison, which will assist luminaire manufacturers in selecting suitable LED light engines and integrated LED lamps for each luminaire product. It defines the procedures to measure optical and electrical properties as a function of temperature of LED light engines and integrated LED lamps. This document is also applicable to LED luminaires.

Page count: 7 pages
Publisher: Illuminating Engineering Society (2020)
SKU: ANSI/IES LM-82-20
ISBN-13: 978-0-87995-055-2

Chapters:

  • 1.0 Introduction and Scope
    2.0 Normative References
    3.0 Definitions
    4.0 Ambient and Physical Test Conditions
    5.0 Electrical Test Conditions
    6.0 Test Method and Procedures
    7.0 Reporting Requirements
    8.0 Informative References

Citation Format:
Illuminating Engineering Society. ANSI/IES LM-82-20, Approved Method: Characterization of Optical and Electrical Properties of Solid-State Lighting Products as a Function of Temperature. New York: IES; 2020.

CONTENTS

  • 1.0 Introduction and Scope
  • 1.1 Introduction
  • 1.2 Scope
  • 2.0 Normative References
  • 2.1 ANSI/IES LM-79-19
  • 2.2 ANSI/IES LS-1-20
  • 3.0 Definitions
  • 3.1 device under test (DUT)
  • 3.2 heat sink
  • 3.3 thermal chamber
  • 4.0 Ambient and Physical Test Conditions
  • 4.1 General
  • 4.2 Temperature Monitoring Point and Temperature Measurement Device
  • 4.3 Seasoning
  • 4.4 Thermal Environment
  • 4.5 Stabilization
  • 5.0 Electrical Test Conditions
  • 5.1 Electrical Settings
  • 5.2 Circuits
    5.2.1 DC
    5.2.2 AC
  • 5.3 Electrical Measurement Uncertainties
  • 6.0 Test Method and Procedures
  • 6.1 Ambient Temperature Measurement Using Absolute Photometry Measurement Methods
    6.1.1 Ambient Temperature (Initial) Measurement
    6.1.2 Ambient Temperature (Calibration) Measurement
  • 6.2 Measurement with Temperature Controlled Device
    6.2.1 Measurement at Temperature Tb,0 + 25 °C
    6.2.2 Measurement at Temperature Tb,0 + ΔT
    6.2.3 Measurement at Additional Temperatures
  • 7.0 Reporting Requirements
  • 8.0 Informative References