刘洪兴, 任建伟, 李宪圣, 孙景旭, 叶钊, 赵文才. 光谱分布可调光源的LED筛选研究[J]. 应用光学, 2013, 34(1): 56-61.
引用本文: 刘洪兴, 任建伟, 李宪圣, 孙景旭, 叶钊, 赵文才. 光谱分布可调光源的LED筛选研究[J]. 应用光学, 2013, 34(1): 56-61.
LIU Hong-xing, REN Jian-wei, LI Xian-sheng, SUN Jing-xu, YE Zhao, ZHAO Wen-cai. Screening of LED for spectrum-tunable light source[J]. Journal of Applied Optics, 2013, 34(1): 56-61.
Citation: LIU Hong-xing, REN Jian-wei, LI Xian-sheng, SUN Jing-xu, YE Zhao, ZHAO Wen-cai. Screening of LED for spectrum-tunable light source[J]. Journal of Applied Optics, 2013, 34(1): 56-61.

光谱分布可调光源的LED筛选研究

Screening of LED for spectrum-tunable light source

  • 摘要: 针对LED光谱分布可调光源对LED寿命以及光谱一致性的要求,对可见光和近红外波段的29种LED分别进行200 h的电流加速老化试验,并提出LED光谱一致性筛选算法。老化试验结果表明:峰值波长为385 nm、400 nm 和4201 nm 3种LED的辐射通量平均衰减分别为24.8 %、10.7 %和25.6 %,不能用于LED光谱分布可调光源;剩余的26种LED的辐射通量平均衰减量均低于3.5 %,可作为光谱分布可调光源的内部光源。LED光谱一致性筛选算法以LED光谱数据为基础,计算同类LED间的相对光谱偏差,26种LED的相对光谱偏差均小于4.5 %,保证了所筛选出LED的光谱一致性。

     

    Abstract: In order to meet the requirements for lifetime and spectrum consistency of LED used in LED-based spectrum-tunable light source, 29 kinds of LEDs were seasoned for 200 hours separately under the accelerated current condition, and a spectral consistency screening algorithm was proposed. Results of ageing test indicate that the values of radiant flux attenuation of 3 kinds of LEDs, whose peak wavelengths are 385 nm, 400 nm and 420-1 nm, are 24.8%, 10.7% and 25.6%,respectively, so they are not suitable for LED-based spectrum-tunable light source. The values of radiant flux attenuation of the remaining 26 kinds of LEDs are all below 3.5%, and they are all suitable for LED-based spectrum-tunable light source. The spectral consistency screening algorithm is based on the LED-s spectroscopic data, and the relative spectral deviation among the same kinds of LEDs can be calculated. The relative spectral deviations of 26 kinds of LEDs are all below 4.5%, the spectral consistency of the screened LED can be ensured.

     

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