Existing solid state lighting standards III

<< Go Back Posted By:administrator on Jan 19,2015in Industry News


1. IES G-2, Guideline for the Application of General Illumination ("White") LED Technologies, the standard is specifically targeting LED telecommunication applications.

2. IES LM-79-2008, Electrical and Photometric Measurements of Solid-State Lighting Products, the standard calculates a LED luminaire’s light efficacy (net lumen output divided by input power). Luminous efficacy is the most reliable method for measuring LED product performance, and overall performance. This method is used to replace traditional luminaire efficacy measurements that rely on lamp ratings. LM-79 can also assist the establishment of a more accurate luminaire performance standard for both SSL and other light sources.

3. IES LM-80-2008, Measuring Lumen Maintenance of LED Light Sources, addresses the measurement of lumen depreciation for LED light sources including LED packages, and the majority of light sources. Lumen depreciation is a term used to describe LEDs gradual dimming phenomenon over its life span. Since LED packages are traditionally defined as having long lifetimes, it is possible for the lights to become increasingly dimmer over time, and requires a specific definition. The LM-80 is a standard to test lumen depreciation. Worth noting is lumen maintenance is used to measure the LED brightness compared to its initial lumens output, and should not be interpreted as the actual luminaire life time. Other luminaire breakdown factors could greatly shorten its life time.

4. IES LM-82-2012, Approved Method for the Characterization of LED Light Engines and LED Lamps for Electrical and Photometric Properties as a Function of Temperature. Provides a method for measuring the lumen degradation of light engine products at various temperatures in support of manufacturers determining LED luminaire reliability and lifetime characteristics.

5. IES LM-84-14, Approved Method for Measuring Lumen Maintenance Flux and Color Maintenance of LED Lamps, Light Engines, and Luminaires. Provides the method for measurement of luminous flux and color maintenance of LED lamps, integrated; LED lamps, non-integrated; LED light engines, and LED luminaires. The method is established in a laboratory environment, where reliable test results can be replicated through the same test procedures.

6. IES TM-21-2011, Projecting Long Term Lumen Maintenance of LED Light Sources, specifies a recommended method for projecting the lumen maintenance of LED light sources based on LM-80 collected data.

7. IES TM-28-2014, Projecting Long-Term Luminous Flux Maintenance Of LED Lamps And Luminaires. Defines the methods of projecting long-term luminous flux maintenance of LED lamps and LED lights.