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首页> 外文会议>Advanced optics for defense applications: UV therough lwir II >UV scale calibration transfer from an improved pyroelectric detector standard to field UV-A meters and 365 nm excitation sources
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UV scale calibration transfer from an improved pyroelectric detector standard to field UV-A meters and 365 nm excitation sources

机译：紫外标度校准从改进的热释电检测器标准转移到现场UV-A测量仪和365 nm激发源

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摘要

Calibration of the emitted radiation from UV sources peaking at 365 nm, is necessary to perform the ASTM required 1 mW/cm~2 minimum irradiance in certain military material (ships, airplanes etc) tests. These UV "black lights" are applied for crack-recognition using fluorescent liquid penetrant inspection. At present, these nondestructive tests are performed using Hg-lamps. Lack of a proper standard and the different spectral responsivities of the available UV meters cause significant measurement errors even if the same UV-365 source is measured. A pyroelectric radiometer standard with spectrally flat (constant) response in the UV-VIS range has been developed to solve the problem. The response curve of this standard determined from spectral reflectance measurement, is converted into spectral irradiance responsivity with <0.5% (k=2) uncertainty as a result of using an absolute tie point from a Si-trap detector traceable to the primary standard cryogenic radiometer. The flat pyroelectric radiometer standard can be used to perform uniform integrated irradiance measurements from all kinds of UV sources (with different peaks and distributions) without using any source standard. Using this broadband calibration method, yearly spectral calibrations for the reference UV (LED) sources and irradiance meters is not needed. Field UV sources and meters can be calibrated against the pyroelectric radiometer standard for broadband (integrated) irradiance and integrated responsivity. Using the broadband measurement procedure, the UV measurements give uniform results with significantly decreased uncertainties.
机译：在某些军事材料（舰船，飞机等）测试中，必须校准从365 nm处达到峰值的UV源发出的辐射，以执行最低1 mW / cm〜2辐照度的ASTM。这些紫外线“黑光”通过荧光液体渗透剂检查用于裂缝识别。目前，这些无损检测是使用汞灯进行的。缺少适当的标准以及可用的紫外线计的光谱响应不同，即使测量了相同的UV-365光源，也会造成重大的测量误差。为了解决这个问题，已经开发出了在光谱光谱上具有恒定（恒定）响应的热释电辐射计标准。由光谱反射率测量确定的该标准品的响应曲线，由于使用了可溯源至主要标准低温辐射计的Si阱检测器的绝对结点，因此转换为不确定度<0.5％（k = 2）的光谱辐照度响应度。平面热释电辐射计标准品可用于从各种紫外线源（具有不同的峰和分布）执行统一的积分辐照度测量，而无需使用任何光源标准。使用这种宽带校准方法，不需要对参考UV（LED）源和辐照度计进行年度光谱校准。可以根据热释电辐射计标准对现场紫外线源和仪表进行校准，以实现宽带（综合）辐照度和综合响应度。使用宽带测量程序，紫外线测量可提供均匀的结果，并显着降低不确定性。

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