- Tytuł:
- Evaluation of the durability of selected LED lamps
- Autorzy:
-
Zalesińska, Małgorzata
Zabłocka, Julita
Pawlak, Andrzej - Powiązania:
- https://bibliotekanauki.pl/articles/135480.pdf
- Data publikacji:
- 2020
- Wydawca:
- Akademia Morska w Szczecinie. Wydawnictwo AMSz
- Tematy:
-
lifetime
LED lamps
non-directional LED lamps for household use
Ulbricht’s sphere
forecasting the luminous flux reduction
forecasted lifetime - Opis:
- Luminous flux reduction during operation affects the operating lifetimes of LED lamps. Due to the very long lifetimes of LED sources, i.e. tens of thousands of hours, the lifetime declared by the manufacturer is most often determined by forecasting the luminous flux reduction. Lifetime forecasting is performed based on measuring the operating luminous flux reduction within a time frame of at least 6000 hours, every 1000 hours, followed by extrapolating the obtained results with a relevant exponential curve. This article presents the results of measurements of luminous flux changes taking place between 0 and 10,000 operating hours of several LED light sources. The obtained results were analyzed, and the lifetimes of the examined lamps were evaluated.
- Źródło:
-
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2020, 61 (133); 23-28
1733-8670
2392-0378 - Pojawia się w:
- Zeszyty Naukowe Akademii Morskiej w Szczecinie
- Dostawca treści:
- Biblioteka Nauki