【摘要】 为了探究鬼像对成像系统性能的影响，构建了二次反射产生的鬼像影响下的调制传递函数(MTF)的计算模型。本文首先介绍了在近轴近似下的鬼像分析与描述的方法。接着，从调制传递函数的定义出发，考虑鬼像在像面处的照度对像面调制度的影响，构建了鬼像影响下的MTF计算模型。通过对一系统进行实例计算，并与仿真结果进行对比，均方误差最大不超过0.049 373，进而验证了该模型的准确性。同时针对误差较大的结果进行了详细分析，明确了该计算方法的适用范围。研究结果表明，利用近轴近似的方法计算鬼像影响下的MTF在大多数情况下是真实准确的，该研究在光学系统的鬼像分析方面做出了有益探索。更多还原

【Abstract】 To investigate the impact of ghost images on optical system performance, we develope a Modulation Transfer Function(MTF) calculation model under the influence of ghost images generated by secondary reflection. We first introduce the analyzing and describing method of ghost image using the paraxial approximation. Then, starting from the definition of the MTF, and considering the influence of ghost image irradiance on the modulation of the image plane, an MTF calculation model under the influence of ghost images is constructed. By conducting a case study calculation on a system and comparing it with the simulation results,it is found that the maximum mean square error is less than 0.049 373, which verifies the accuracy of the model. Furthermore, a detailed analysis is conducted, examining cases that exhibited larger errors and clarifying the range in which this calculation method can be applied. The research results indicate that the paraxial approximation method is both accurate and reliable when calculating the MTF under the influence of ghost images is accurate, and is applicable in most cases. This study serves as a valuable exploration in the ghost image analysis of optical systems.更多还原