公开(公告)号：US20190151944A1

公开(公告)日：2019-05-23

申请号：US16169988

申请日：2018-10-24

Applicant: Applied Materials, Inc.

Inventor： Paul J. Steffas ,  Ajey M. Joshi ,  Jeffrey L. Franklin ,  Zhihong Lin

IPC: B22F3/105 ,  B23K26/06 ,  B23K26/073 ,  B23K26/082 ,  B23K26/08 ,  B29C64/153 ,  B29C64/20

Abstract: An additive manufacturing apparatus includes a platform, a dispenser to deliver a plurality of successive layers of feed material onto the platform, a light source to generate a light beam, a first polygon mirror scanner to reflect the light beam towards the platform, and a second polygon mirror scanner to reflect the light beam towards the platform. The light beam is alternately directed to the first polygon mirror scanner and the second polygon mirror scanner such that the light beam is directed to the first polygon mirror scanner during a dead time of the second polygon mirror scanner and the light beam is directed to the second polygon mirror scanner during a dead time of the first polygon mirror scanner.