M
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 [...]
N
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 [...]
H
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 [...]
H
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 [...]
D
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, [...]
U
I want to explain the issue of UV light before we start. UV radiation can’t be used for skin disinfection because it will damage the molecules and can cause serious health problems. Secondly UV light is not the best term for what we are going to discuss here. The light refers to the visual part [...]
U
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 [...]
T
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, [...]
Q
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, [...]
R
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 [...]
