Flickering & Stroboscope Effect
The flickering is defined as the subjective impression of the light flux fluctuation, which results essentially from the very fast fluctuations of small output voltage amplitude. This phenomenon, applied to direct current and which is used in LED Lighting, is explained using the peak-to-peak voltage (Vpp). This is defined as a value in volts that indicates the difference between the maximum and minimum value in the driver output voltage. The driver output voltage are not perfectly linear, there are always small disturbances, that is, the closest Vpp value is less voltage fluctuations will the driver output voltage have and the luminaire will have less flickering.
Briefly, the flickering is caused by the output signal oscillations in some drivers and which, although not necessarily consciously detected by the human eye, they are always captured by the brain through the light emitted by the luminaire (intermittent light), causing the stroboscopic effect.
The stroboscopic effect occurs when a flashing light source illuminates a moving object. This effect, created by the flickering, is harmful to the vision and causes discomfort, visual fatigue and headaches.
Choose lighting fixtures that respect your health and well-being. Choose Flickering Free luminaires, like those from Brilumen.