本文讨论了现代光学仪器的复消色差和超复消色差对玻璃的相对部分色散的要求,论述了玻璃的色散公式的应用条件。应用色散公式和玻璃的色散数据,用电子计算机计算了一批无机玻璃的紫外本征吸收和红外吸收频率及其振子力,论证了它们和玻璃成分及结构的关系,测定了若干无机玻璃的紫外吸收曲线和红外吸收光谱,得到的紫外截止波长和红外最高能量的吸收波长与上述计算值相符合。 此外,本文还讨论了玻璃的相对部分色散和玻璃成分的关系,提出了按照玻璃成分计算玻璃相对部分色散的方法,计算了近百种光学玻璃的相对部分色散系数值,给出了计算误差。由于玻璃的相对部分色散系数较难测定,该计算方法可以用来计算和校正光学玻璃的相对部分色散系数。同时,分析了玻璃中各氧化物和氟化物的相对部分色散的变化规律,可用来指导设计新的特殊色散光学玻璃的成分。

In this paper the relation between apoohromatism and super-apochromatism of the optical systems and the relative partial dispersion of inorganic glasses are discussed and the application conditions of the dispersion formula of glasses are dealt with. Based on the dispersion formula and dispersion data of the glasses, the eigen absorption frequency in ultraviolet range, the vibrational absorption frequency in infrared and their oscillator strength of a series of glasses have been calculated by computer. The relationship between these properties and chemical composition and structure of glasses are also considered. Infrared and ultraviolet absorption spectra of a series of inorganic glasses have been measured. Good agreement has been found between the measured and calculated value of the ultraviolet outofF wavelength as well as the infrared absorption wavelength at the highest energy. In addition, the relationship between relative partial dispersion and chemical composition of glasses has been established and a method for calculating the relative partial dispersion of glass from ohemical composition are presented. By this method, the relative partial dispersions of about one hundred kinds of optical glasses has been calculated. Because of difficulty in measuring the relative partial dispersion, our calculation method can be used to oalculate and adjust the relative partial dispersion of optical glasses. The ohanging rules of the relative partial dispersion for various oxides and fluorides in glasses are analysed, which oan be used for designing new glass composition with anomalous dispersion.