本文报道了计量测试研究院新近研制的常温(40℃至80℃)全辐射照度标准装置的原理、结构、实验方法及其结果。标准辐射源是一个用循环液体加热的倒圆锥——圆筒形空腔黑体,其两小时温度稳定性优于±0.05℃,有效辐射面的温场不均匀性小于0.1℃。测量光路采用了刚性骨架构造,几何配置精密,提高了几何量的测量准确度。设置了大口径光阱, This paper reports the principles, structure, experimental methods and results of a newly developed standard device for measuring the irradiance at room temperature (40 ° C to 80 ° C) recently developed by the Institute of Metrology and Measurement. The standard radiation source is an inverted conical-cylindrical cavity blackbody heated with a circulating fluid with a temperature stability of better than ± 0.05 ° C over two hours and a temperature field of less than 0.1 ° C on the effective radiation surface. The measuring optical path adopts the rigid skeleton structure, and the geometric configuration is precise, which improves the measurement accuracy of the geometric quantity. Set a large diameter light trap,