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Details
LM-85-14
IES Approved Method for Electrical & Photometric Measurements of High Power LEDs
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LM-9-09
Electrical and Photometric Measurements of Fluorescent Lamps
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LM-46-04
Photometric Testing of Indoor Luminaires Using High Intensity Discharge or Incandescent Filament Lam
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LM-62-06
Laboratory or Field Thermal Measurements of Fluorescent Lamps and Ballasts in Luminaires, Reaffirmed
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LM-76-02
Photometric Testing of Fiber Optics Lighting Systems (Reaffirmed 2008)
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LM-78-07
Approved Method for Total Luminous Flux Measurement of Lamps Using an Integrating Sphere Photometer
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LM-77-09
Intensity Distribution Measurement of Luminaires and Lamps Using Digital Screen Imaging Photometry
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LM-84-14
IES Approved Method for Measuring Luminous Flux and Color Maintenance of LED Lamps, Light Engines, a
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LM-80-15
IES Approved Method: Measuring Luminous Flux and Color Maintenance of LED Packages, Arrays and Modul
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LM-86-15
IES Approved Method: Measuring Luminous Flux and Color Maintenance of Remote Phosphor Components (LM
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LM-80-15
01-Jan-2015
IES Approved Method: Measuring Luminous Flux and Color Maintenance of LED Packages, Arrays and Modul
Print version available end of August
This document describes the procedures by which LEDs are tested for the luminous (or radiant, or photon) flux maintenance and chromaticity maintenance or wavelength changes over time when operated under controlled environmental and operational conditions. The resulting measurements may be used for comparison of LEDs, and they may be utilized in models that project long-term changes in light output during the life of the LEDs.
The scope within this ANSI/IES LM-80-15 has been expanded to include tests for three types of flux maintenance along with tests for how chromaticity changes over time. LED drive characteristics have been updated to include pulse width modulated current, DC constant voltage and AC regulated voltage drive. The maintenance test duration and measurement interval are no longer specified but rather left for determination according to the intended usage of the data. The reporting section is more specific with regard to the required data. Requirements for thermal measurements have been clarified to reflect industry best practices.
Contents
Scope
Normative References
Definitions
Physical and Environmental Conditions
Electrical Conditions
Photometric and Electrical Measurement Procedures
Maintenance Test Procedures
Test Report
Annex A DUT Sample Selection (Informative)
Annex B Monitoring of Case Temperatures (Normative)
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TI-IND-MET-6-3