公开(公告)号：US06185029B2

公开(公告)日：2001-02-06

申请号：US09469305

申请日：1999-12-22

申请人： Keiichiro Ishihara

发明人： Keiichiro Ishihara

IPC分类号： G02B2608

CPC分类号： G02B26/124 ,  G02B26/125 ,  G02B26/126

摘要： An optical scanner comprises a light source, a polygon mirror having plural light deflection faces for deflecting a light flux emitted from the light source, a first optical system for introducing the light flux emitted from the light source to the polygon mirror in which the light flux introduced to the polygon mirror has a breadth in a main scanning direction larger than a breadth of one of the light deflection faces in the main scanning direction, and a second optical system for condensing the light flux deflected by the polygon mirror onto a scanned face, wherein the second optical system has at least one reflection member for reflecting and introducing the light flux onto the scanned face, and each of the reflection members has a reflectivity varying from a center toward a periphery in the main scanning direction to uniformize substantially a light quantity distribution in the main scanning direction of the light flux on the scanned face.

摘要翻译： 一种光学扫描器，包括光源，具有用于偏转从光源发射的光束的多个光偏转面的多面镜，用于将从光源发射的光束引入到多面镜的第一光学系统，其中光束 被引入到多面反射镜的主扫描方向的宽度大于主扫描方向上的一个光偏转面的宽度的宽度，以及用于将由多面镜偏转的光束会聚到扫描面上的第二光学系统， 其中第二光学系统具有至少一个用于将光束反射并引入到扫描面上的反射构件，并且每个反射构件具有从主扫描方向上的中心向外周变化的反射率，从而使光量大致均匀化 在扫描面上的光束的主扫描方向上的分布。