IES LM-79 LM-80 LM-82 LM-84 Test Laboratory

LM Tests

EUROLAB Laboratory performs physical, power, photometric and light measurements of lighting products.
IES LM-79
The North American Illuminating Engineering Society (IESNA) Approved Method for Electrical and Photometric Measurement of Solid State Lighting Products (LM-79-08) is a guide developed for the measurement of solid state (LED) lighting products. Explain the procedures and precautions to be taken when performing various measurements for solid state lighting (SSL) products, such as total luminous flux, electric power, light intensity distribution, and various chromaticity characteristics.
Recently, the term LM-79 Test has become a part of our illumination dictionary and in some cases has been considered an illumination program on its own. Many lighting programs, such as DLC and Energy Star, refer to LM-79 procedures and are not self-contained lighting programs that meet the specified requirements and pass / fail criteria.
However, the term LM-79 Test has been generally accepted as two different tests - a channel distribution test with an IES file and an integrated sphere test for a standard color (CCT, CRI, Duv, chromaticity coordinates). However, when mentioning the LM-79 to the requested test at any time, our staff will confirm exactly what the customer wants because many measurement options are discussed in the official document. LM-80 refers to a method for measuring the lumen depreciation of solid-state lighting sources such as LED packages, modules, and arrays.

LM Test
LM Test


IES LM-82
The North American Illuminating Engineering Society (IESNA) is an approved method for characterizing LED Light Engines and LED Lamps for Electrical and Photometric Properties as a Function of Temperature (LM-82-12), a document addressing changes in photometric performance. SSL light engines and lamps with temperature variations.
Recently, the term "LM-82 test" has become part of our lighting dictionary and in some cases has been considered as a lighting program in itself. While many lighting programs refer to LM-82 procedures, they are not a lighting program with the conditions specified and the criteria for successful / unsuccessful.
As the development of LED is increasingly used for more lighting industry categories and general lighting, there is a greater need to determine how various light engines and integrated lamps will work in any light fixture configuration. With form factors ranging from miniaturized recessed stalactites to large multi-panel floods, the need to understand the photometric performance of these sources in a range of thermal environments simulating these form factors and intended environments has increased.
This test method provides photometric performance results (lumens and color) at various ambient temperatures, which allow armature manufacturers to evaluate light engines and lamps and determine which one is best suited for the thermal signature of their armature model. By thermally supporting the photometric performance of LED light engines and integrated lamps, the designer can determine which internal features, including heat sink properties, must be met for optimum performance.
IES LM-84
The North American Illuminating Engineering Society (IESNA) Endorses the Method for Measuring Luminous Flux and Color Maintenance of LED Lamps, Light Engines, and Fixtures. The method (LM-84-14) is a document that deals with the changes in photometric performance of SSL systems over time. .
Recently, the term "LM-84 test" has become part of our lighting dictionary and in some cases has been considered as a lighting program in itself. While many lighting programs refer to LM-84 procedures, they are not a lighting program with requirements and success / failure criteria specified by itself.
The main considerations for this test method are lumen maintenance and color maintenance. As used herein, the term "maintenance" refers to how a particular metric (lumen or color) performs over time. In the case of lumen care, it is a simple ratio of lumen output to the first lumen output of the product at any time during the life of the product. This essentially means that the LM-79 test was initially performed at the 0 hourly combustion time and at any interval required during the selected operating cycle.
The duty cycle in which the maintenance test is performed is the customer's and may have as many interval tests as necessary. For example, for a product seeking Energy Star eligibility, a typical duty cycle is the 3000 clock (for intermediate qualification) with interval testing and the 6000 clock for full certification. ITL can test at any interval during the customer's preferred duty cycle.