| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lens array capable of effectively preventing a weld from generating near an optical path between two concave parts for forming the optical path, which are close to each other, in a lens array body other than on a lens surface, and a manufacturing method of the same. <P>SOLUTION: A fourth surface 4e is located on a surface on a gate GT side so that a joining position of a molten resin material in molding a lens array body 4 can be displaced from forming positions of lens surfaces 11 to 13. Furthermore, by a three-dimensional shape of a third concave part 38, in molding the lens array body 4, the molten resin material can be prevented from flowing into a flow passage between a first concave part 18 and a second concave part 19 from a surface 4f side opposed to the fourth surface 4e. <P>COPYRIGHT: (C)2012,JPO&INPIT |
