| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a plastic optical element with birefringence reduced. <P>SOLUTION: An angle between a line segment connecting a gate-corresponding part of a core lens and the center of the core lens and a line segment connecting the gate-corresponding part of a molding portion and the center of the core lens is 90-180° when viewed in the direction of the optical axis of the plastic optical element. <P>COPYRIGHT: (C)2012,JPO&INPIT |
