具有倾斜校正作用的激光扫描光学系统设计

DESIGN OF A LASER SCANNING OPTICAL SYSTEM WITH TILT-CORRECTING FUNCTION

阐述了用于激光印字机、具有倾斜校正作用的镯面ｆ－θ物镜的激光扫描系统的设计，有效地消除了偏转反射面的倾斜引起的扫描线错位。提出了确定系统主要参数的原则，分析了准直物镜、柱面镜、ｆ－θ物镜。

The design of a laser scanning system used for laser printer and with a bracelet surface f-θ objective having tilt-correcting function is described. The system is able to eliminate scanning line displacement caused by the tilt of deflection reflection surface efficiently. The principle for determining main system parameters is proposed and the design problems of some parts surch as collimation objective, cylindrical mirror f-θ objective and multiple surface prism rotation mirror etc. are analyzed.