Varughese K O, Krishna K S
Appl Opt. 1993 Mar 1;32(7):1104-8. doi: 10.1364/AO.32.001104.
Polygonal mirrors are commonly used in laser beam scanning. The paper gives some useful geometrical formulas for their basic dimensions when used as parallel as well as convergent beam scanners. The first part deals with underfilled polygons that are used in parallel beam scanning. In the second part, a method is outlined for obtaining a nearly flat field in convergent beam scanning. This method enables the use of relatively fast but simple spot-forming lenses in postobjective scan systems resulting in scan resolutions that are sometimes comparable to the resolutions given by preobjective scanners with complex F-theta lenses.
多面镜常用于激光束扫描。本文给出了多面镜用作平行光束和会聚光束扫描器时其基本尺寸的一些有用几何公式。第一部分讨论了用于平行光束扫描的欠填充多面镜。第二部分概述了一种在会聚光束扫描中获得近似平场的方法。该方法使得在后物镜扫描系统中能够使用相对快速但简单的光斑形成透镜，从而得到的扫描分辨率有时可与使用复杂F-θ透镜的前物镜扫描器所给出的分辨率相媲美。
