Szukana fraza: [Abstrakt = "One of the parameters determining the life of LED lamps is the decrease in luminous flux during operation. Knowledge of the decrease in the luminous flux is also important due to the selection of lumen maintenance lamp factor \(LLMF\), taken into account in the design of lighting. Due to the very high life of LED sources, amounting to tens of thousands of hours, the life declared by the manufacturer is most often durability determined on the basis of the method of projecting the luminous flux decline. The article describes the results of studies on the luminous flux of selected non\-directional LED lamps for home use, replacing traditional 60W incandescent lamps with 9,000 hours of operation."]

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