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本文从透过体界面的能量平衡关系出发,分别计算了光线通过透过体时由于反射、介质吸收等各种因素造成的能量衰减。从而给出一个物理概念清晰的透过体透过率的表达式,可以用来计算各种不同介质组合的透过体系的透过率,也可以计算各种因素对透过率的影响,便于分析研究。 文中,还对Hottel的近似公式进行了分析,指出了其误差的可能来源。和传统的无穷级数求和的计算方法相比,本文所给出的方法更为概念清晰、计算简便。
In this paper, we start from the energy balance through the body interface and calculate the energy decay due to various factors such as reflection and medium absorption when the light passes through the transmission body. Thus a clear concept of physical transmission through the body through the expression can be used to calculate the transmission of a variety of different combinations of media through the system can also calculate the various factors on the transmittance, Analysis. In this paper, Hottel’s approximate formula is also analyzed, pointing out the possible sources of error. Compared with the traditional method of calculating the sum of infinite series, the method given in this paper is more conceptual and computationally simple.