Essilor International (Compagnie Generale D'optique)

Marc Huard

Yohann Felten

Benoît Bessiere

Joël Massau

A device for producing a polymerizable synthetic material optical lens, including a closure member () that is adapted to grip two molding shells (A,B) circumferentially to define a molding cavity () in conjunction with the shells (A,B), the closure member () including a synthetic material wall () adapted to come into contact with the molding shells (A,B) and the closure member () incorporating a molding material introduction passage () discharging into the molding cavity () through a casting opening (); characterized in that the closure member () includes a seal () that forms the contact wall () and the introduction passage (), which joint () is formed of an elastomer material and of a rigid insert () at least part of which has the elastomer material molded over it, the introduction passage () being inside the insert ().

Device for producing a polymerizable synthetic material optical lens

Needle valve for filling a mold with an organic material in the liquid state

An injection valve includes an injection channel () that opens outwards via an outlet () and has a specific inlet for the arrival of the molding material (A) remote from the outlet (), in addition to a slider unit () that is moveably mounted in the injection channel () and controls the outlet thereof (). The injection channel () has a specific outlet (B) for discharging the molding material. The invention can be used to mold an optical lens made from a polymerizable synthetic material.

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Alfortville, France

Marc Huard