| 摘要 |
PURPOSE:To obtain a high quality resin sealed product having no bubble in its lens part by a structure wherein a lens molding part is formed on a bottom force cavity and a gate and a runner are formed on a top force cavity so that the gate is provided opposite to the lens molding part. CONSTITUTION:A lens molding part 13 is provided in a cavity 12 on the portion belonging to a bottom force 10. A runner 15 communicating through a gate 14 to the cavity 12 is formed on a top force 11. The resin outflowing port of the gate 14 is formed so as to face to the lens molding part 13 in order for resin 18 to fill the lens molding part 13 before filling the cavity 12. |
