High Accelerated Optical Remote Phosphor Aging Studies for LED Luminaire Applications
In this investigation the photo degradation and reliability of remote phosphor plates are studied.Remote phosphor plates,combined with a blue-light LED source,could be used to produce white light.Spectral power distribution (SPD) and photometric parameters of photo-thermally-aged phosphor plates were measured by Integrated-Sphere.Results show that photo-thermal ageing leads to a significant decrease in the luminous flux and chromatic properties of plates.The photometric properties of photo-thermally-aged plates,monitored during the stress thermal ageing tests,showed a significant change both in the correlated colour temperature (CCT) and in the chromaticity coordinates (CIE x,y).The decrease in the luminous flux is strongly correlated to the deterioration of the chromatic properties of the phosphor plates.The results also show a significant decay of CCT,postulating that the degradation of the remote phosphor plates affects the efficiency of light and the colour of emitted light as well.The decrease of CCT takes place with almost the same kinetics as the lumen depreciation.
国内会议
宜昌
英文
1-4
2014-05-15（万方平台首次上网日期，不代表论文的发表时间）