Sorry – the flicker tester app does not exist anymore.
The flicker tester app was fun to use and many times also accurate. However, we decided to take the app down when introducing af proper calibrated testing device: The LabFlicker
The LabFlicker is a semi-handheld flicker tester for all common light sources. All relevant flicker graphics and metrics – including SVM and PstLM – are displayed.
The LabFlicker instrument can be used with any PC – with or without a Viso goniospectrometer. Hence, the LabFlicker instrument and the Viso Light Inspector software on your PC constitute a portable and precise flicker measurement solution. Flicker data can be downloaded for more thorough investigations. It is ideal for checking light sources that need to comply with the EU Ecodesign directive or US Energy Star requirements.
About flickers testers and TLA
Be sure to get a modern flicker tester that can also express flicker measurements in the new metrics, PstLM and SVM. Temporal Light Artifacts (TLA) is a term for undesired light artefacts such as visible flicker (PstLM) or stroboscopic effects. TLA are physically caused and occur in all illuminants to some extent.
The measurement of TLA is difficult. But new, improved measurement methods (PstLM and SVM metric) now make it possible to make comprehensible and comparable statements about the light quality of individual devices.
The European Lighting Industry defines in its position paper “Position Paper on Flicker and Stroboscopic Effect” as follows: “TLAs are described as undesired effects in the visual perception of an observer within an environment. The term ‘flicker’ refers to unacceptable light variation that is directly perceived by an average (or normal) observer. ‘Stroboscopic effect’ is an effect which may become visible for an average observer when a moving or rotating object is illuminated. Lighting products that exhibit flicker or stroboscopic effect are considered not good quality lighting.”