【摘 要】
：
为了对发光二极管(LED)光源G4(LED G4)灯进行快速评价和筛选, 研究了LED G4灯的光电性能。采用积分球测试和分析了LED G4灯在驱动输入电压从10 V增加至34.5 V过程中初态和稳态两种情况下的光通量、光效率、色温等性能参数的变化规律。结果发现初态和稳态下被测灯光通量、色温均随驱动输入电压的增加而上升, 而光效率呈递减趋势。其中光通量在初态与稳态下分别上升了91.40%和39.34%, 光效率分别下降了24.3%和28.1%。此外, 利用热成像仪测试被测灯上方中心点的最高温度, 发现温度
【机 构】
：
上海应用技术大学理学院,上海201418浙江亿米光电科技有限公司,浙江嘉兴314100
论文部分内容阅读
为了对发光二极管(LED)光源G4(LED G4)灯进行快速评价和筛选, 研究了LED G4灯的光电性能。采用积分球测试和分析了LED G4灯在驱动输入电压从10 V增加至34.5 V过程中初态和稳态两种情况下的光通量、光效率、色温等性能参数的变化规律。结果发现初态和稳态下被测灯光通量、色温均随驱动输入电压的增加而上升, 而光效率呈递减趋势。其中光通量在初态与稳态下分别上升了91.40%和39.34%, 光效率分别下降了24.3%和28.1%。此外, 利用热成像仪测试被测灯上方中心点的最高温度, 发现温度随驱动输入电压的升高而升高, 始末差值达到了40 ℃。实验结果表明, 过高的电压并不适合LED G4灯发挥其高性能, 温升对LED G4灯的性能造成负面影响, 因此, 在实际的工作过程中应选择合适的工作电压并提高散热性能。
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