| 摘要 |
PURPOSE: A method for manufacturing lens using dual injection is provided to reduce manufacturing time and costs by omitting surface cutting work by using synthetic resin as a raw material of a lens. CONSTITUTION: A method for manufacturing lens using dual injection is as follows. A raw material for the lens is injected by an injection machine to be a firstly molded article. The first molded article is arranged in a low die(40) of a double injector. When an upper mold(30) of the double injector is closed, the lens raw material is injected to the double injector in order to manufacture a second molded article. The second molded article is thicker than the first molded article.
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