Methods for measuring the new PstLM flicker index according to the ecodesign requirements for LED lighting

The revised regulation of the European Commission on ecodesign for light sources introduces new requirements for light flicker indicators, including PstLM, which determines the resistance of the light source power supply system to network disturbances. PstLM stands for Short Term Perceptibility for light modulation. The new requirements enter into force in September 2021 and will [...]

New TM-30-18 and CIE 224:2017 Colour Rendition Metrics

The design and application of lighting systems should take into account not only illuminance levels but also spectral power distribution and proper colour rendering, which are connected to human wellbeing. The highest number of available studies and measures which help  evaluate LED illumination products better are related to vision. The most obvious ones are the [...]

How to measure high power LEDs’ parameters?

In professional industries, such as the automotive or electronics industries, there are no detailed recommendations or instructions on how to measure the parameters of high power LEDs. Therefore, the recommendations of general lighting standards are applied and industry-specific measurement methods are developed.  by Miko Przybyla | GL Optic Maintaining the right temperature Technical datasheets for [...]

How to measure the luminance distribution of the road lighting?

Road lighting has a particular impact on improving road safety, and it is the luminance measurement that determines the level of “brightness” of the road surface observed by the driver. In this article we will discuss how to use an Imaging Luminance Measuring Device for road lighting verification in accordance with current regulations.  by Miko [...]

Does your LED product comply with new Ecodesign requirements for flicker and stroboscopic effect?

A year from now, at the end of 2021, the new Commission Regulation EU 2019 2020 (Ecodesign) enters into force. The specific requirements for electrical equipment including LED light sources are changing. In addition to the new energy efficiency classes, completely new minimum requirements for flicker and the so-called stroboscopic effect are introduced. Lamp manufacturers, [...]

UV measurements for disinfection of air, water and surfaces

Recent events related to the coronavirus pandemic have resulted in a significant increase in the interest in UV-lamp disinfection. Thus, in the article below selected issues regarding UV LED measurements along with practical tips on the specifics of working with LEDs for special applications are discussed.  by Miko Przybyla and Marcin Pelko | GL Optic [...]

Testing the quality of road lighting according to the criterion of illuminance

The quality of road lighting and the way in which urban spaces and public spaces are illuminated have been widely discussed in recent years in view of the increasing use of LED lighting, which is significantly different from traditional lighting systems with discharge lamps. New technology affects the change in the construction of the luminaire, [...]

Quantity vs. quality of LED lighting. Evaluation measures with consideration of physiology of vision, efficiency, and photobiological safety.

LED technology and its application in luminaires pose a new challenge for quantitative and qualitative evaluation of lighting, taking consideration of its influence on the comfort of performing visual tasks, on photobiological effects, and on photobiological safety. The field of LED lighting is in a particular way interpenetrated by issues related to the design, construction, [...]

Road lighting quality verification using luminance distribution method.

The use of modern LED luminaires in road lighting allows for significant energy savings and can be an opportunity to improve lighting conditions on illuminated road sections. Therefore, cities, municipalities and road managers decide to invest in modern lighting solutions. Optimal use of the advantages of the new LED technology and ensuring proper quality of [...]

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