公开(公告)号：US20040169939A1

公开(公告)日：2004-09-02

申请号：US10785533

申请日：2004-02-23

申请人： KONICA MINOLTA HOLDINGS, INC.

发明人： Akira Sawagami ,  Teruhiko Itoh ,  Toshiyuki Kojima

IPC分类号： G02B003/00 ,  G02B007/02 ,  G02B025/00 ,  G02B017/00 ,  G02B013/00 ,  G02B011/00 ,  G02B009/00 ,  G02B007/00 ,  G02B015/00 ,  G02B003/02 ,  G02B013/18

CPC分类号： B29C45/0025 ,  B29C45/34 ,  B29C2045/0036 ,  B29D11/00009 ,  B29L2011/0016 ,  G11B7/1372 ,  G11B7/22

摘要： A molded lens used in an optical pickup device provided with a plane of incidence having a first optical surface and a plane of emergence having a second optical surface, and a form of an outer circumference of the molded lens is formed by a first straight line portion which is in parallel substantially with a plane including an optical axis, a second straight line portion which is in parallel with the first straight line portion and is symmetric with the first straight line portion about the plane and by two circular arcs each connecting end portions of the first and second straight line portions. A part of a fringe of each of the first and second optical surfaces is substantially in a form of a circle whose center is on the optical axis is cut off by each of the first and second straight line portions.

摘要翻译： 一种用于具有具有第一光学表面和具有第二光学表面的出射平面的入射平面的光学拾取装置中的模制透镜以及模制透镜的外圆周的形状由第一直线部分 其基本上与包括光轴的平面平行，第二直线部分与第一直线部分平行并且与第一直线部分围绕平面对称，并且两个圆弧各自连接到第一直线部分的端部 第一和第二直线部分。 第一和第二光学表面中的每一个的边缘的一部分基本上是圆的形式，其中心在光轴上被第一和第二直线部分中的每一个切断。