公开(公告)号：US5657147A

公开(公告)日：1997-08-12

申请号：US505974

申请日：1995-07-24

申请人： Motonobu Yoshikawa ,  Yoshiharu Yamamoto ,  Kazutake Boku ,  Hironori Nakashima ,  Akinori Yusa ,  Ken Morishima

发明人： Motonobu Yoshikawa ,  Yoshiharu Yamamoto ,  Kazutake Boku ,  Hironori Nakashima ,  Akinori Yusa ,  Ken Morishima

IPC分类号： G02B26/10 ,  G02B13/00 ,  G02B13/18 ,  G02B26/12 ,  G02B26/08

CPC分类号： G02B26/126

摘要： The optical scanner of this invention includes a light source, an optical deflector for scanning a light flux from the light source, a first image formation optical system disposed between the light source and the optical deflector, and a second image formation optical system disposed between the optical deflector and a surface to be scanned. The second image formation optical system includes a curved mirror for reflecting a light flux from the optical deflector and a correction lens for converging the light flux from the curved mirror on the surface to be scanned. A refractive power in the sub-scanning direction at the center of the correction lens in the scanning direction is different from that at the periphery thereof.

摘要翻译： 本发明的光学扫描器包括光源，用于扫描来自光源的光束的光偏转器，设置在光源和光偏转器之间的第一成像光学系统，以及设置在光源 光学偏转器和待扫描的表面。 第二图像形成光学系统包括用于反射来自光学偏转器的光束的曲面镜和用于将来自曲面镜的光束会聚在待扫描表面上的校正透镜。 校正透镜在扫描方向中心的副扫描方向上的屈光力与周边不同。

公开(公告)号：US5745277A

公开(公告)日：1998-04-28

申请号：US445175

申请日：1995-05-19

申请人： Kazutake Boku ,  Motonobu Yoshikawa ,  Yoshiharu Yamamoto ,  Hironori Nakashima ,  Akinori Yusa

发明人： Kazutake Boku ,  Motonobu Yoshikawa ,  Yoshiharu Yamamoto ,  Hironori Nakashima ,  Akinori Yusa

IPC分类号： G02B26/10 ,  G02B13/00 ,  G02B26/12 ,  G02B26/08

CPC分类号： G02B26/125

摘要： The scanner optics of this invention includes a condensing lens arrangement composed of a first aspherical lens having a positive refractive power and a convex meniscus surface on the side of the scanning surface and a second toric lens of which incident surface is saddle toroidal where a point on the incident surface has a greater radius of curvature in the sub-scanning direction as the point is farther from the optical axis in the scanning direction. A laser light flux emitted from a light source is deflected and scanned by a polygon mirror so as to form an image on a scanning surface via the condensing lens arrangement.

摘要翻译： 本发明的扫描仪光学元件包括聚光透镜装置，其由具有正折光力的第一非球面透镜和在扫描表面侧的凸弯月面表面组成，第二复曲面透镜的入射面为鞍形环形， 当该点离扫描方向的光轴越远时，入射面的副扫描方向的曲率半径越大。 从光源发射的激光光束被多面镜偏转和扫描，以便通过会聚透镜装置在扫描表面上形成图像。