PSD 在测定光学中心偏差中的应用  

Application of the Position Detector in the Determination of Lens Centering Error

作　　者：王元庆[1] 

机构地区：[1]安徽机电学院电气工程系

出　　处：《仪表技术与传感器》1998年第7期31-33,共3页Instrument Technique and Sensor

摘　　要：利用激光干涉技术将透镜中心偏差量转换为一光点相对于某特定点的偏移量，通过ＰＳＤ测定此光点的位置即可确定中心偏差的大小和方向，并由此而控制执行器正确调节透镜位置。本文分析了系统的光学结构和信号的光电特性，并以此为理论依据设计出ＰＳＤ测量电路。By means of interference technology, the lens centering error may be converted to the relative position of a optical point to some special space points. The determination of measuring error can be made by testing the position of the optical point. In this paper, the optical system and circuit are given and the photo-electric signal's features are analyzed in detail, which put out the theorical base for the real signal processing.

关 键 词：中心偏差 PSD 光电信号 光电器件 

分 类 号：TN15[电子电信—物理电子学]