TW200606459A - A core insert and a method for making a glass aspherical lens - Google Patents

Abstract

The present invention provides a core insert and a method for making a glass aspherical lens. The core insert comprises: a top core insert, a bottom core insert and a module surface. The core top insert and the bottom insert are both made up of a substrate, an adhesive film and a overcoat. The adhesive film covers the substrate and the overcoat is on the adhesive film. The method mainly includes the following steps: first provide some molding apparatus such as a core insert and raw materials of ball glass; secondly, clean the raw materials of ball glass; thirdly, put the raw materials of ball glass between the top core insert and the bottom core insert; fourthly, heat the core insert until the ball glass turns soft, and inject some rare gas into the core insert; then press the core insert, make the ball glass turn into a glass molding lens; finally unloading the glass molding lens from the core insert and annealing oven is used for the glass molding lens to reduce and release the internal stress of it, further, rectify and clean the glass molding lens.