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Светодиодный прибор улучшенной цветопередачи

Светодиодный прибор улучшенной цветопередачи

Abstract

В настоящее время все более широкое распространение получает светодиодное освещение, в связи с чем актуальна проблема показателей качества его цветопередачи. Целью исследования явилось получение цветности светодиодного осветительного прибора с индексом цветопередачи более 80 и координатами цветности высокой точности. С этой целью разработан экспериментальный образец на базе тепло-белых, холодно-белых, красных и желтых светодиодов, расположенных на плате равномерно в матричном порядке, с возможностью регулировки токовых режимов каждой группы цветности светодиодов. Выбор количества и цветностей светодиодов осуществлен посредством математического моделирования, в основу алгоритмов которого положены экспериментально полученные распределения светового потока светодиодов и зависимости светового потока от тока. Отклонение экспериментально полученных координат цветности от расчетных составляет 0,1 % по х и 1,5 % по у. Использование только белых светодиодов позволяет получать индекс цветопередачи 75, дополнительное включение красных и желтых светодиодов повышает индекс цветопередачи до 81, а полученная цветность располагается вблизи кривой излучения абсолютно черного тела. Возможна регулировка цветности в широком диапазоне цветовых температур при включении и отключении отдельных цветностей светодиодов и управлении токовыми режимами. Следовательно, данный осветительный прибор может применяться для освещения офисов и жилых помещений, а также для создания рабочего режима и комфортного отдыха.

Nowadays LED lighting has become more widespread, and therefore the problem of color reproduction quality is very actual. The aim of the research was to obtain the color of LED lighting device with a color rendering index of more than 80 and chromaticity coordinates of high accuracy. For this purpose, an experimental model based on the warm-white, cool-white, yellow and red LEDs on the board uniformly in the matrix order, with adjustable current mode of each color LEDs was developed. Selecting of the number and color of LEDs was carried through a mathematical model, based on the experimentally obtained algorithms of light distribution and LED light output depending on the current. The deviation of the chromaticity coordinates obtained experimentally of the calculated rate is 0,1 % with respect to x and 1,5 % in y. Only the using of the white LED produces 75 color rendering index, the additional inclusion of red and yellow LEDs improves the color rendering index of 81, and the resulting color is near the curve of blackbody radiation. One can adjust the color in a wide range of color temperatures for enabling and disabling individual locus LEDs and current-mode control. Therefore, this luminary can be used for offices and homes lighting, as well as to create a working regime and comfortable staying.

Keywords

СВЕТОДИОД, ОСВЕТИТЕЛЬНЫЙ ПРИБОР, ЦВЕТОПЕРЕДАЧА, ЦВЕТНОСТЬ, ЦВЕТОВАЯ ТЕМПЕРАТУРА

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
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