作　　者： ; ; ; ; ; ;

机构地区： 深圳大学师范学院

出　　处： 《光电工程》 2004年第3期26-28,32,共4页

摘　　要： 根据几何光学原理,推导出转镜-振镜扫描系统物镜前振镜上光斑移动速度的解析表达式。 系统本身的结构特点是产生扫描非线性和非对称性的根源,并会引起图像畸变。对设计的40面,半径40mm,转速为23437.5rmin-1的转镜-振镜系统的数值计算结果表明,行扫描中最大速度差约为6m.s-1,时间对称中心从32祍改变到约30.7477祍。此结果可作图像畸变修正的参考。 An analytical expression for spot moving speed on the former vibrating mirror of the polygonal mirror scanning system objective is derived from geometrical optical principle. The structural characteristics of the system are the origin for creating scanning nonlinearity and asymmetry, and they will cause image distortion. The numerical calculation results for the designed polygonal mirror system with 40 planes, a radius of 40 mm and rotating speed of 23437.5 r/min show that the maximum speed difference in line scanning is about 6 m/s and the time symmetric center is changed from 32 μs to about 30.7477 μs. These results can be used as reference for image distortion correction.

关 键 词： 转镜一振镜二维扫描 非线性扫描 非对称性扫描 光斑

领　　域： [电子电信] [电子电信]