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6. Glossary
dimmable
Commonly used Anglicism designating the luminous intensity variation capacity of a luminaire. This depends directly on the electronic design of the ballast.
flickering
Flickering of the light induced by absent or inadequate filtering of the ballast at the mains frequency or one of its harmonics. Flickering may or may not be perceptible to the human eye, and can have consequences for well-being and health.
Li-Fi (Light Fidelity, analogous to Wi-Fi for Wireless Fidelity)
Wireless communication technology based on the use of LED light to transmit digital data. Faster, greener and safer than Wi-Fi, Li-Fi uses the optical spectrum.
Pulse Width Modulation (PWM); Pulse Width Modulation (PWM)
A technique used to synthesize...
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Bibliography
Bibliography
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 – Measurement and presentation of photometric data for lamps and luminaires – Part 4: LED lamps, modules and luminaires - NF EN 13032-4 + A1 - 06-19
Safety requirements...
Regulations
Decree of December 27, 2018 on the prevention, reduction and limitation of light pollution.
Décret n° 2011-831 du 12 juillet 2011 relatif à la prévention et à la limitation des nuisances lumineuses : Version consolidée au 5 août 2019.
Patents
LED Filaments : HAKATA (K.), MATSUOKA (T.), "Light-emitting device and lighting apparatus incorporating same", US patent n° 2009184618 assigned to Ushio Denki KK, published 23 Jul. 2009
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Key industrial players in the LED market:
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