公开(公告)号：US11298874B2

公开(公告)日：2022-04-12

申请号：US15920495

申请日：2018-03-14

Applicant: Alcon Inc.

Inventor： Brian Craig Cox ,  Fernando Enrique Oritz ,  Austin Xavier Rodeheaver

IPC: B29C64/135 ,  B29D11/02 ,  B29D11/00 ,  B33Y10/00 ,  B29C64/264 ,  B29C64/245 ,  B33Y30/00 ,  B29C64/255 ,  B29C64/227

Abstract: A continuous additive fabrication system comprises a bath of photopolymer resin and a light source assembly having a light source and a motorized variable aperture. The light source assembly is operable to generate a focus point in the bath of photopolymer resin, the shape of the focus point at a curing plane within the bath of photopolymer resin corresponding to the shape of the motorized variable aperture. The continuous additive fabrication system further comprises a platform configured to support a build object and a drive mechanism (coupled to at least one of the platform and the light source assembly) configured to continuously move the curing plane through the bath of photopolymer resin. A size and/or shape of the motorized variable aperture is changed while the curing plane in continuously moved through the bath of photopolymer resin.