在光学成像系统中,普遍承认二级光谱的校正要使用具有异常相对部分色散的玻璃。由于公认的一级色差的缺陷,导致误差出现。这里叙述的是采用普通光学玻璃来校正二级光谱的理论,并用数学的例子说明了它的应用。引言一个对称光学系统单色成像的五个Seidel像差的研究可以分为两部份。首先,由物体和光瞳的给定位置大小,导出折射或反射表面的五个像差中每一个的公式。其次指 In optical imaging systems, it is generally accepted that the correction of the secondary spectrum uses a glass with an aberrant relative partial dispersion. Due to the accepted defect of the first-level color difference, the error appears. Described here is the use of ordinary optical glass to correct the theory of the secondary spectrum, and uses mathematical examples to illustrate its application. Introduction The study of five Seidel aberrations in monochromatic imaging of a symmetrical optical system can be divided into two parts. First, the formula for each of the five aberrations of the refraction or reflection surface is derived from the given position size of the object and the pupil. Followed by