论文部分内容阅读
一、引言对光学零件的中心偏差,过去都沿用光学零件的几何轴和其光轴间的线性距离(△C)表示。这种表示法暂且称之谓线偏心。其实,光学零件的几何轴和光轴二者往往既不在同一平面内,又不平行。实际却是垂直于零件几何轴方向的光心偏移量。这种表示方法既不科学,又不利于生产加工。目前国内外都逐步用零件的几何轴和光轴的夹角定义中心偏,这种方法可称之谓角偏心。它既准确地表明了偏心的物理概念,又能紧紧地把光学设计、零件加工和检验联系起来,统一了标准,对公差的要求既明确又合理。鉴于目前现行生产中还广泛使用线
I. INTRODUCTION The center deviations of optical parts have always been represented by the linear distance between the geometrical axis of the optical part and its optical axis (△ C). For the time being, this notion is called line eccentricity. In fact, both the geometrical axis and the optical axis of the optical component are often neither in the same plane nor parallel. Actually it is perpendicular to the geometric axis of the part of the optical axis offset. This method of expression is neither scientific nor conducive to production and processing. At home and abroad are gradually using the geometry of the part axis and the angle between the definition of the center axis, this method can be called the angular eccentricity. It not only accurately shows the concept of eccentric physical, but also closely related to the optical design, parts processing and testing, standardization, tolerance requirements are clear and reasonable. In view of the current widespread use of the current production line