Schmidt system is a famous optical system. The corrector equation based on the third-order aberration theory has been acknowledged all along. When the previous equation is confirmed in characteristic of the aspheric surface equation and optical design program ZEMAX, it is found that the equation of the corrector has some errors. Analyses of this problem are given. A new corrector equation is established. The new equation is confirmed seriously by the optical design program ZEMAX again, it can be deduced that the coefficient a=1/2ra2, and the spherical aberration coefficient ∑S1=0. This improvement is very useful for the optical design of Schmidt system, which quickens the optimization and easily reaches the optimal design data.

In the field of space flight, aviation and astronomy, R-C (Ritchey-Chrétien) camera composed by two hyperboloid mirrors is one of the main instruments for detection and photography. A R-C system has been designed, which is composed of a primary mirror with clear aperture of Φ0=600mm, radius of curvature of 1440mm, conic constant k1 of-1.00486, relative aperture A1 of 1/1.2, lightweight ratio of 53%; and a secondary mirror with clear aperture of 12-92mm, curvature radius of 236.2mm, conic constant k2 of-1.66923. Therefore, the focal length of the R-C optical system is 6000mm, and the relative aperture A is 1/10. Based on classical methods, the new testing methods have been developed. The R-C optical system has been tested by both classical and new test methods, the measurement results have been compared with a perfect agreement. The manufacture precision of the secondary mirror includes the spot diaphragm with a diameter of 0.02mm in size and PV 0.12λ (λ=0.6328µm) of wavelength.. The spot diaphragm's size of the primary mirror is 0.02mm. The spot diaphragm's size of the system is 0.02mm, RMS is 0.18λ and PV is 1.2λ measured by WYKO laser interferometer. Because it is used in infrared wave band, this optical system has already met the designed technical data perfectly. The R-C optical system has been checked and accepted by the user.

在光学加工中，反射镜可以很好地补偿待检镜，解决加工中的一些难题。通过三级像差理论求解反射镜补偿检验二次曲面的初始结构参量，令球差系数∑S1=0，补偿镜e21可选择球面或椭球面，推导出补偿镜和待检镜之间关系的表示式。e21=0、0.1、0.2、0.3、0.4，按公式画出e22/α～β，αr02/r01～β的曲线图，从中确定β∝α，e21，e22，r01，r02，d12的对应关系，解出补偿检验的初始结构参量，分析补偿镜放置待检镜曲率中心前α>0，α>1和后α<0、β≥0，β≤0对应待检镜的e22各种求解。分析看出：这包括了补偿检验的全部功能，对凸和凹的二次曲面都可以进行补偿检验，其中有以前提出的解，也有以前没有发现的解，对补偿检验的全面分析是非常有益的。

在导弹武器装备中，信号接收系统或红外成像系统，即接收天线是非常重要的。本文对毫米波/红外成像复合天线研制的每个主要环节进行了系统地分析，它包括四部分：光学成像系统、毫米波探测器、光学扫描器和红外探测器。描述了光学成像系统和光学扫描系统的设计方法，光学系统是由两个非球面反射镜所组成，并给出了光学系统设计的各种数据。

从三级像差理论出发分析了由两透镜无光焦度校正器和单一反射镜组成的光学系统，讨论两透镜无光焦度校正器放置在单一反射镜前和后组成的光学系统的各种消像差条件。并给出求解两透镜无光焦度校正器参量的计算公式。