应用光学, 2016, 37 (4): 573, 网络出版: 2016-08-29  

Solar-Blind滤光片可见光谱段光密度连续测量

Continuous measurement for optical density of visible band of solar blind UV filters
作者单位
中国科学院 长春光学精密机械与物理研究所, 吉林 长春 130000
摘要
为实现Solar-Blind(日盲紫外)滤光片光密度在可见光谱段的高精度连续测试, 搭建了以氙灯配合单色仪作为光源、使用单光子计数器作为探测器的测试系统, 并对该系统的误差进行分析。系统主要装置有氙灯与单色仪组合的光源, 标准衰减装置和单光子计数器; 以替代法为基础进行测试, 将由单光子计数器探测到的衰减后的计数值作为参考计数值替代光源的初始计数值, 通过运算得到滤光片的可见光谱段光密度; 该测试系统将滤光片光密度的测试动态范围扩展到0~-11OD, 实现了可见光谱段内进行连续光谱测量的功能, 且降低了系统的测试误差。与使用窄带LED作为光源的测试系统相比, 测试不确定度由2%降低至0.5%, 相对重复性误差由0.2% 降低至0.13%。
Abstract
To achieve the large dynamic range and high-precise test for the cutoff depth of the out-band of solar blind untraviolet(UV) filters, a system which not only used xenon lamp with a monochromator as the standard light, but also used photon counter as the detector was proposed. Additional, the error of the system was analyzed. The major equipments were the xenon lamp with a monochromator, the standard reflective neutral attenuator and the single photo counter. Based on the substitution method the measurement was carried out. The photo counter detected the number of the xenon lamp through the attenuator as the reference to substitute the initial photo number of xenon lamp, then the cutoff depth of filters could be acquired. Results show that the test system can extend the testing dynamic range of filter optical density to 0~-11OD, it realizes the continuous measurement the visible spectral bands at 1 nm intervals, and greatly reduces the test error of the system.Compared with the test system using narrow band LED as the light source, the test uncertainty reduces from 2% to 0.5%,and the relative repeatability error is from 0.2% down to 0.13%.

易翔宇, 周跃, 闫丰, 章明朝, 陈雪, 崔穆涵. Solar-Blind滤光片可见光谱段光密度连续测量[J]. 应用光学, 2016, 37(4): 573. Yi Xiangyu, Zhou Yue, Yan Feng, Zhang Mingchao, Chen Xue, Cui Muhan. Continuous measurement for optical density of visible band of solar blind UV filters[J]. Journal of Applied Optics, 2016, 37(4): 573.

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