{"id":5413,"date":"2025-12-17T11:32:12","date_gmt":"2025-12-17T11:32:12","guid":{"rendered":"https:\/\/asselum.com\/tests-according-to-lm79-lm80-tm21-istmt-and-tm30\/"},"modified":"2025-12-31T10:51:45","modified_gmt":"2025-12-31T10:51:45","slug":"tests-according-to-lm79-lm80-tm21-istmt-and-tm30","status":"publish","type":"page","link":"https:\/\/asselum.com\/en\/calibration\/tests-according-to-lm79-lm80-tm21-istmt-and-tm30\/","title":{"rendered":"Tests according to LM79, LM80, TM21, ISTMT and TM30"},"content":{"rendered":"

Tests according to LM79, LM80, TM21, ISTMT and TM30<\/h1><\/div>
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The lm-79-08 is an American standard created by the IES (Illuminating Engineering Society of North America) in 2008. It indicates the procedure to measure the photometric, spectral (Colour) and electrical characteristics for LED technology. It was the first standard to talk about LED measurement or Solid-State Lighting Products (SSL) and laid the groundwork for new standards and recommendations such as EN 13032-4 and CIE S 025 <\/p>\n<\/div>

<\/i><\/i><\/span>Read more<\/span><\/a><\/div><\/div>
Photometric tests provide a comprehensive service to measure the quantity, color, quality, and spatial distribution of the light emitted by lamps and luminaires.<\/strong> In addition to providing other relevant data such as luminous flux, power consumption, correlated color temperature, and color rendering index, among others. All measurements and calculations performed are compiled in a fully detailed test report. <\/p>\n

Asselum has a revolutionary system for measuring color and spectrum at different C and Gamma angles, allowing compliance with the new color measurement standard for SSL.<\/strong> With this system, chromatic aberrations, color dispersion, and various color values such as the color temperature at each Gamma angle can be analyzed in depth.<\/div><\/div><\/div><\/div><\/div><\/div><\/div>

Test according to ANSI\/IES LM-79 for electrical and photometric measurement of solid-state lighting products.<\/h2><\/div>

The ANSI\/IES LM-79 test characterizes the performance of lighting products that use solid-state lighting (SSL) technology, including light-emitting diodes (LEDs).<\/p>\n

This test defines the method for measuring performance under specific operating conditions at a given point in the product\u2019s lifetime, usually at the beginning of its service life.<\/p>\n

In this case, it does not address lifetime ratings, light maintenance, or LED temperature, which can be measured with other tests such as IES TM-21.<\/p>\n

The LM-79 method is applicable to integrated LED products, such as luminaires and lamps. However, it does not apply to LED packages, modules, or arrays. <\/p>\n

LM-79 data enable objective product comparisons, allow evaluation against performance requirements, and are required by voluntary labeling programs such as LED Lighting Facts and ENERGY STAR\u00ae. Although LM-79 does not prescribe a report format or minimum content, it provides a substantial list of \u201ctypical reported elements.\u201d The key types of measurements addressed in the document include electrical characteristics, total luminous flux, spatial light distribution, and color attributes.<\/p>\n<\/div><\/div><\/div>

The test provides the following information:<\/h2><\/div><\/div><\/div>

A variety of electrical measurements can be performed as part of the LM-79 test, including but not limited to the following:<\/h3><\/div><\/div><\/div>