公开(公告)号：US20220055291A1

公开(公告)日：2022-02-24

申请号：US17518152

申请日：2021-11-03

Applicant: 3D Systems, Inc.

Inventor： Guthrie Cooper ,  John D. Clay

IPC: B29C64/135 ,  B33Y50/00 ,  B29C64/386 ,  B29C64/268 ,  B29C64/25 ,  B29C64/393

Abstract: A three-dimensional printing system for solidifying a photocurable resin in a layer-by-layer manner at a build plane includes a scan module, a transparent plate, a sensor, and a controller. The scan module is configured to scan the light beam along two axes to address the build plane. The transparent plate is positioned in the optical path between the scan module and the build plane. The transparent plate has at least one reflective feature in the optical path. The sensor is mounted above the glass plate and is positioned to receive light reflected from the reflective feature. The controller is configured to operate the scan module to scan the light beam across the build plane, receive a signal from the sensor when the light beam impinges upon the reflective feature, and analyze the signal to verify a proper alignment of the light beam to the build plane.

公开(公告)号：US10723078B2

公开(公告)日：2020-07-28

申请号：US15718103

申请日：2017-09-28

Applicant: 3D Systems, Inc.

Inventor： Guthrie Cooper

IPC: B29C64/30 ,  B29C64/393 ,  B33Y50/02 ,  B33Y10/00 ,  G06T7/30 ,  B29C64/129 ,  H04N1/40 ,  H04N1/00 ,  B33Y30/00 ,  B29C64/124 ,  B29C64/386

Abstract: A three dimensional printing system includes a plurality of light engines, an alignment article, a camera, and a controller. The plurality of light engines define a corresponding plurality of build fields which overlap and define a build plane. The alignment article carries an alignment calibration image and is configured to be mounted in the three dimensional printing system with the alignment calibration image proximate to the build plane and in facing relation with the plurality of light engines. The alignment calibration image defines a dark field with an array of reflective alignment targets. The camera is mounted to be in facing relation to the alignment calibration image. The controller is configured to operate at least the light engines and the camera to individually align the light engines to the alignment calibration image.