摘要
基于高温黑体辐射源BB3500M研究并建立了第四代光谱辐射度和色温度国家基准装置。采用稳流和稳温相结合的反馈工作模式，开启后3h即达到温度稳定。3016K时，1h内的温度变化小于0．59K。温度测量直接溯源至Pt—C和Re-C高温共晶点黑体，2980K时的测量不确定度为0．64K（k=1）。光谱辐射亮度和光谱辐射照度的波长范围向短波分别扩展至220nm、230nm，长波扩展至2550nm，达到全波段光谱辐射亮度CCPR-SI比对的能力。新基准增加了分布温度参数的测量能力，2353K和2856K的测量不确定度（k=1）分别改善为1．6K和2．1K。对基准装置入射光学系统的辐照不均匀性以及短波紫外大气传输过程所带来的散射和吸收进行了数值计算，提出理论修正方法，将辐照不均匀性测量误差减小0．3％，大气传输误差减小0．29％。
Based on the new high temperature blackbody BB3500M and optical feedback control system, the fourth- generation national primary standard apparatus of spectral radiometry and color temperature are evaluated and established. The stability, uniformity, repeatability and measurement uncertainty of the apparatus are improved greatly. The measurement uncertainty of temperature was decreased to 0. 64 K （k = 1 ） when BB3500M blackbody is operating at 2 980 K, which is traceable to the Pt-C and Re-C fixed point blackbodies of NIM. Wavelength measurement range of spectral radiance and spectral irradiance are extended to 220 - 2 550 nm and 230 ~ 2 550 nm respectively, which meets the full wavelength requirements of CCPR-S1 spectral radiance international comparison. The measurement uncertainty of color temperature and distribution temperature is promoted to 1.6 K at 2 353 K and 2. 1 K at 2 856 K.
出处
《计量学报》
CSCD
北大核心
2013年第3期201-206,共6页
Acta Metrologica Sinica
基金
基金项目：国家质量监督检验检疫总局技术改造项目（2011QK015）
关键词
计量学
基准装置
光谱辐射照度
光谱辐射亮度
色温
分布温度
高温黑体
Metrology
National primary standard apparatus
Spectral irradiance
Spectral radiance
Color temperature
Distribution temperature
High temperature blackbody
