公开(公告)号：US11433630B2

公开(公告)日：2022-09-06

申请号：US16709119

申请日：2019-12-10

Applicant: Alcon Inc.

Inventor： Honghui Lu ,  Mark Neely ,  Alice Weimin Liu ,  Xuxian Niu ,  Uwe Haken

IPC: B29D11/00 ,  G02B1/04 ,  B29K83/00 ,  B29K105/00

Abstract: The present invention generally relates to a method for producing silicone hydrogel contact lenses having less optical defects or free of optical defects by subjecting the extraction tray for the formed silicone hydrogel contact lenses to a reciprocating lowering and raising motion thereof to obtain the silicone hydrogel contact lenses.

公开(公告)号：US20220266554A1

公开(公告)日：2022-08-25

申请号：US17662858

申请日：2022-05-11

Applicant: Alcon Inc.

Inventor： Alice Weimin Liu ,  Daryl Reece ,  Kirk Cooper ,  Shridhar Natarajan ,  John Janders ,  Uwe Haken ,  Stacey Elliott

IPC: B29D11/00 ,  B29C37/00 ,  B29C39/36 ,  B29C43/50

Abstract: The invention provides a method producing contact lenses, comprising the step of: separating the mold into the male and female mold halves, with the silicone hydrogel contact lens adhered on one of the male and female mold halves; bring a shaped ultrasonic horn in direct contact with at least one area of a non-optical surface of the female mold half or the male mold half having the molded silicone hydrogel contact lens attached thereon; and applying a ultrasonic vibrational energy to the at least one area of the non-optical surface of the female mold half or the male mold half having the molded silicone hydrogel contact lens attached thereon so as to separate the molded silicone hydrogel contact lens from the mold half attached thereon.