Optical tool assembly for improved rcw and lens edge formation

B - Operations – Transporting – 29 – D

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B29D 11/00 (2006.01) B29C 33/00 (2006.01) B29C 45/00 (2006.01)

Patent

CA 2592539

An optical tool assembly for use in an injection molding apparatus opposite a non-optical tool assembly to form an ophthalmic mold section including a cavity ring mounted to an associated mold plate and an optical insert removably secured to the cavity ring and having an optical molding surface thereon for forming an optical surface of the ophthalmic mold section. The optical molding surface has a right cylindrical wall (RCW) molding portion for forming a RCW of the ophthalmic mold section. The RCW molding portion is formed adjacent a peripheral edge of the optical insert.

La présente invention a trait à un ensemble d'outil optique destiné à être utilisé dans un appareil de moulage par injection en regard d'un ensemble d'outil non optique pour la formation d'une section de moule ophtalmique comprenant un anneau de cavité monté à une plaque de moule associée et un insert optique fixé de manière amovible à l'anneau de cavité et présentant une surface de moulage optique pour la formation d'une surface optique de la section de moulage ophtalmique. La surface de moulage optique présente une portion de moulage de paroi cylindrique droite pour la formation d'une paroi de cylindre droit de la section de moulage ophtalmique. La portion de moulage de paroi cylindrique droite est formée adjacente à un bord périphérique de l'insert optique.

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