公开(公告)号：US06507444B2

公开(公告)日：2003-01-14

申请号：US09404760

申请日：1999-09-24

Applicant: Tadao Hayashide ,  Kazuyuki Kondo

Inventor： Tadao Hayashide ,  Kazuyuki Kondo

IPC: G02B302

CPC classification number: G02B13/24

Abstract: An imaging lens is used in image reading and adapted to image information of an original on a reading device. In the imaging lens at least one surface out of a plurality of surfaces forming the imaging lens has refracting power rotationally asymmetric with respect to the optical axis.

Abstract translation: 成像透镜用于图像读取并适于在读取装置上对原件进行图像信息。 在成像透镜中，形成成像透镜的多个表面中的至少一个表面具有相对于光轴旋转不对称的折射力。