LED Knowledge

What is the difference between edge-lit and back-lit LED panels?

2021-01-22
What is the difference between edge-lit and back-lit LED panels?A back-lit LED panel is made of an array of LEDs fitted ...

What is UGR?

2021-01-22
UNIFIED GLARE RATING (UGR)Introduction to UGRUGR stands for Unified Glare Rating. It is an objective measure of glare th...

COMMISSION DELEGATED REGULATION (EU) 2019/2015 ERP STANDARD

2021-02-06
COMMISSION DELEGATED REGULATION (EU) 2019/2015of 11 March 2019supplementing Regulation (EU) 2017/1369 of the European Pa...

Calculations Glare Ratin(GR Observer)

2021-01-29
Calculations Glare Rating ConceptsIn 1994, the CIE developed a glare evaluation method for outdoor sports lighting and a...

What is Luminous Flux?

2021-01-22
Luminous flux is a measure of the power of visible light produced by a light source or light fitting. It is measured in ...

What is DALI ?

2021-01-22
LI GuideDALI stands for Digital Addressable Lighting Interface. It is a 2-way communications protocol that is used to pr...

What is LM-80? A Guide to LM-80 Standard

2021-01-22
LM-80 is a standard that defines how the lumen output and colour shift of LEDs should be measured over time and at diffe...

What is LM-79?

2021-01-22
LM-79 is a standard that defines how the performance of an LED lamp or fixture should be measured. A test according to L...