论文部分内容阅读
黑体辐射源是红外测试实验室的基本设备之一,目前它广泛应用于各种红外系统的绝对辐射标定中。作为辐射标定的基准,黑体辐射源的正确设计是十分重要的问题。根据我们研制500～1300K小型标准黑体辐射源的情况,本文着重讨论黑体设计中应注意的几个问题。黑度要求的确定对黑体黑度的要求主要应从其有用辐射功率的准确度来考虑。黑体发出的辐射功率由两部分组成,一是黑体的自身热辐射,二是对外界杂散辐射的反射。若以B(λ、T_b)表示绝对黑体的光谱辐射通量密度、以W_(Oλ)表示到达
Blackbody radiation source is one of the basic equipment in the infrared test laboratory. At present, it is widely used in the absolute radiation calibration of various infrared systems. As a benchmark for radiation calibration, the correct design of blackbody radiation sources is a very important issue. According to our research on the 500 ~ 1300K small standard blackbody radiation source, this article focuses on several issues that should be noticed in the design of blackbody. Determination of blackness requirements Blackbody blackness requirements mainly from the usefulness of radiation power to consider the accuracy. Radiation power emitted by the black body consists of two parts, one is the blackbody’s own thermal radiation, the second is the reflection of stray radiation on the outside world. If B (λ, T_b) represents the absolute blackbody spectral radiant flux density, expressed in W_ (Oλ)