The directional emissivity is deduced from the Bidirectional Reflectance Distribution Function (BRDF) in the hemispherical scattering space of the objects.
利用双向反射分布函数测量系统,通过对物体表面双向反射分布的测量来获得其方向发射率。
This sphere serves as a diffuse light source, which enables measurements of the hemispherical reflectance, or the directional absorptance, respectively.
这个球作为扩散光源,使测量的半球形或定向吸收率的反射系数,分别使用。
This method USES the hemispherical harmonics basis to represent incoming radiance and USES the Cartesian product of two hemispheres to define the BRDFs.
该方法利用半球谐基函数对入射光线正交化,利用两个半球上的笛卡儿积来定义物体表面的双向反射率分布函数。
The cutter head is covered with a cavity of the hemispherical cutter head.
半球形刀头套的空腔罩住刀头。
In this paper, the hemispherical grating technique, which is effectively used in enhancing quantum efficiency of Si photodetector, is introduced.
本文介绍了提高硅光探测器量子效率的半球形点阵技术。