1. Improvement of temporal light artefact effects in commercial LED lamps.
- Author
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Mantela, V, Nordlund, R, Askola, J, Kärhä, P, Dekker, P, and Ikonen, E
- Subjects
LED lamps ,OPTICAL modulation ,MANUFACTURING industries ,LAMPS ,HAWTHORNE effect - Abstract
Temporal light modulation and its potential adverse visual effects on human observers, collectively known as temporal light artefacts (TLAs), have been limited by the European Union Ecodesign regulation. Limitations on two key TLA metrics, flicker and stroboscopic effect, were introduced in September 2021. This study analyses the impact of this regulation on commercial LED lamps by measuring multiple different consumer-grade LED E27 retrofit lamps by several manufacturers before and after the regulation. The lamps purchased after the Ecodesign regulation seem to favour a certain type of LED driver that provides the best TLA behaviour of all lamp types. The regulation, with respect to TLA, has resulted in the replacement of ill-behaving lamp types in the market by newer lamps with better TLA characteristics. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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