Tools | Measurement | Spectral Light Meters | Flicker | Ecodesign Directive | Oct 08, 2019

BTS256-EF Measures New Flicker Metrics for Compliance with Ecodesign Directive

The European Commission´s proposed regulation of lighting under the Ecodesign Directive will establish mandatory product performance and quality requirements on all lighting products. This new EU directive will include strict requirements for flicker and stroboscopic effect, collectively referred to as temporal light artefacts (TLA). Simple measures such as flicker index and modulation depth will not be adequate as they do not distinguish the possible TLA effects and do not account for the effect of frequency-dependent sensitivity or the wave shape of light output. The BTS256-EF spectral light and flicker meter measures the specific metrics required by the regulation, PstLM and SVM.

The metric used for flicker in the Ecodesign regulation is the parameter 'PstLM', short-term flicker severity, where a value of PstLM=1 means that the average observer has a 50 % probability of detecting flicker. The metric used for stroboscopic effect in this regulation is 'SVM', stroboscopic visibility measure, where SVM = 1 represents the visibility threshold for an average observer.

The limits in this new EU directive are currently discussed to be PstLM < 1.0 and SVM < 0.4 although there is lobbying from the lighting industry to relax the SVM limit to <1.6. Regardless, meeting these demanding limits, particularly for SVM, will require considerable effort by manufacturers prior to the September 2021 enforcement date.

Besides full TLA measures, the BTS256-EF in conjunction with its provided software provides comprehensive photometric and colorimetric data required for general lighting applications. Additional functions are also provided for specialist tasks such as horticultural and human centric lighting.

For additional information, please visit www.gigahertz-optik.de/en-us/product/BTS256-EF

About Gigahertz-Optik:

Gigahertz-Optik GmbH was founded in 1986 as an independent company by Dipl.-Ing. (FH) Anton Gugg-Helminger and Wolfgang Dähn. The continuous development of our product range has resulted in a comprehensive selection of light measurement devices, finely tuned accessory products, and services.  With its US subsidiary, Gigahertz-Optik Inc., Gigahertz-Optik GmbH is a global manufacturer of metrological solutions for optical radiation.devices, finely tuned complementary products, and services.  With its US subsidiary, Gigahertz-Optik Inc., Gigahertz-Optik GmbH is a global manufacturer of metrological solutions for optical radiation. - www.gigahertz-optik.de/en-us/home/ 

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