利用热象仪测温,只有知道了待测材料表面的比辐射率,才能有效地确定材料表面的真实温度,否则只能测得其表观温度。因此,如何确定材料的比辐射率已成为大家关心并且迫切需要解决的问题。为了研究电子器件散热器的辐射特性,我们利用AGA-780热象仪对几种不同涂层的型材散热器的有效比辐射率进行了研究。有效比辐射率不仅与物体的温度有关,与测量方向 Using thermal imager temperature, only know the specific emissivity of the surface of the material to be tested, in order to effectively determine the true temperature of the material surface, or only the apparent temperature measured. Therefore, how to determine the specific emissivity of materials has become an issue that everyone cares about and urgently needs to solve. In order to study the radiation characteristics of electronic device radiators, we used the AGA-780 thermal imager to study the effective specific radiance of profiled radiators of several different coatings. Effective emissivity is not only related to the temperature of the object, but also to the measurement direction