Correspondence: On the state of knowledge concerning the effects of temporal light modulation

Autor:	Carsten Dam-Hansen, Christophe Martinsons, Steve Coyne, Jennifer A. Veitch
Rok vydání:	2021
Předmět:	Physics temporal light modulation lighting light sources Quantum mechanics State (functional analysis) perception Electrical and Electronic Engineering stroboscopic effect Light modulation
Zdroj:	Veitch, J A, Martinsons, C, Dam-Hansen, C & Coyne, S 2021, ' Correspondence: On the state of knowledge concerning the effects of temporal light modulation ', Lighting Research and Technology, vol. 53, no. 1, pp. 89–92 . https://doi.org/10.1177/1477153520959182
ISSN:	1477-0938 1477-1535
DOI:	10.1177/1477153520959182
Popis:	Temporal light modulation (TLM) is a change in the luminous quantity or spectral distribution of light with respect to time of either a light source or a lighting system. These changes arise because of the device or system design, including drivers and control gear, and because of fluctuations in the electrical supply. In former times, families of lighting products all exhibited the same (or approximately the same) TLM characteristics: For example, AC-powered incandescent lamps shared the property of TLM in a sinusoidal wave at twice the mains frequency and 4%–10% modulation depth. T8 fluorescent lighting systems with electronic ballasts operated with a dominant frequency between 20 kHz and 40 kHz and little modulation depth. Previously, knowing the lighting technology provided sufficient information about the TLM properties of a lighting system; today, this is impossible without measuring the system directly.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::098165132beaae04dd53d444aab9fa5e https://doi.org/10.1177/1477153520959182 Zobrazit plný text záznamu