一、前言光学系统中各光学表面的曲率中心(简称球心)应位于同一轴线上。但是,这只不过是理想情况,实际光学系统中不可避免的存在中心偏。这样,光学系统就不再保持同轴性,也就不能用同轴系统的初级象差理论了。这就产 I. INTRODUCTION The centers of curvature of the optical surfaces in the optical system (referred to as the sphere center) should be located on the same axis. However, this is only ideal, and there is an inevitable central bias in the actual optical system. In this way, the optical system no longer maintains the same coaxiality and can not use the primary aberration theory of the coaxial system. This produces