激光与光电子学进展, 2017, 54 (12): 122303, 网络出版: 2017-12-11
LED光源G4灯的光电性能 下载: 634次
Photoelectric Performance of G4 Lamp with LED Light Source
光学器件 发光二极管 光电性能测试 驱动输入电压 初态 稳态 optical devices light-emitting diodes photoelectric performance test input voltages of drive circuit initial state steady state
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。
Abstract
In order to rapidly evaluate and screen G4 lamp with light-emitting diodes (LED) light source (LED G4), the photoelectric performance of LED G4 lamp is studied. Using the integrating sphere, variations of the performance parameters such as luminous flux, luminous efficiency, color temperature with input voltages of drive circuit changing from 10 V to 34.5 V are tested and analyzed in both initial and steady states. The results show that luminous flux and color temperature of tested lamp increase with the raise of input voltage of drive circuit in both initial and steady states, but luminous efficiency tends to decrease. In initial state and steady state, the luminous flux increases as much as 91.40% and 39.34%, and luminous efficiency decreases by 24.3% and 28.1%, respectively. Furthermore, the highest temperature of the center over the tested lamp is tested by thermal imager. The temperature increases with the increase of input voltage of drive circuit. The difference between its start value and end value reaches 40 ℃. Experimental results show that excessive input voltage of drive circuit is not suitable for high performance of LED G4 lamp and temperature rise has a negative impact on its performance. Therefore, we should choose appropriate operating voltage and improve the performance of heat dissipation in practice.
袁塨晨, 郭春凤, 邹军, 杨波波, 毛喜良. LED光源G4灯的光电性能[J]. 激光与光电子学进展, 2017, 54(12): 122303. Yuan Gongchen, Guo Chunfeng, Zou Jun, Yang Bobo, Mao Xiliang. Photoelectric Performance of G4 Lamp with LED Light Source[J]. Laser & Optoelectronics Progress, 2017, 54(12): 122303.