1. Modern LEDs for lighting

From yesterday to today

It may seem counter-intuitive to link the history of two technologies that seem as far apart as lighting and radio, yet they were one and the same for over 50 years...

In 1909, Guglielmo Marconi was awarded the Nobel Prize in Physics for the invention of the TSF. Two years earlier, in 1907, Joseph Henry Round, Marconi's personal assistant, published an article on the emission of light by carborundum (SiC) crystals used to amplify radio signals, without understanding the physical principle . In 1929, while researching amplifiers, Oleg Vladimirovich Losev, a Russian radio technician, rediscovered...

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Modern LEDs for lighting

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page Lighting Systems based on LEDs LED components

LED operating principle

Bibliography

(1) - ROUND (H.J.) - A note on carborundum electrical world. - 49, p. 309 (1907).
(2) - LOSEV (O.V.) - Optical relay. - Patent n° 12191, février 1927.
(3)...

Standards and norms

Definitions and characteristics

General lighting – Light-emitting diode (LED) products and related equipment – Terms and definitions – Modified by NF EN 62504/A1 (May 2018) - NF EN 62504 - 12-14
Light and lighting – Measuring and presenting photometric data for lamps and luminaires – Part 4: LED lamps, modules and luminaires - NF EN 13032-4+A1 - 06-15

Safety requirements...

Regulations

Key regulations on environmental performance and eco-design

Regulation (EU) No 1194/2012 of December 12, 2012 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to ecodesign requirements for directed lamps, light-emitting diode lamps and related equipment, amended

Regulation No 1428/2015 of August 25, 2015 amending Commission Regulation...