公开(公告)号：US20190015933A1

公开(公告)日：2019-01-17

申请号：US16032184

申请日：2018-07-11

Applicant: 3D Systems, Inc.

Inventor： Sam Coeck

IPC: B23K26/354 ,  B23K26/04 ,  B23K26/70 ,  B23K26/064 ,  B23K26/067 ,  B23K26/06

Abstract: A three dimensional printing system includes a laser system, a beam splitter, a pinhole, a sensor, and a controller. The laser system emits a light beam of varying diameter carrying at least 100 watts of optical power along an optical path. The laser has an imaging plane along the optical path which can be coincident or close to a focal plane at which the beam has a minimum diameter. The beam splitter is positioned along the optical path to receive the beam and to transmit most of the optical power and to reflect remaining optical power. The pinhole is positioned along the optical path at the imaging plane to receive the reflected beam having a minimal diameter. The controller is configured to analyze a signal from the sensor to determine intensity and distribution parameters for the light beam.

公开(公告)号：US11135679B2

公开(公告)日：2021-10-05

申请号：US16001693

申请日：2018-06-06

Applicant: 3D Systems, Inc.

Inventor： Jonas Van Vaerenbergh ,  Sam Coeck ,  Brawley Valkenborgs ,  Rudy Raeymaekers

IPC: B23K26/342 ,  G01B11/00 ,  B33Y10/00 ,  B33Y30/00 ,  B23K26/70 ,  B23K26/082 ,  B23K26/12 ,  B33Y50/02 ,  B23K26/042 ,  B29C64/268 ,  G05B19/401 ,  B22F12/00 ,  B22F10/10

Abstract: An apparatus for layered manufacture of a three-dimensional product includes a build chamber having a window, a build platform within the build chamber, a calibration device that is physically separated from the build chamber, an optical system including a beam source and a scanning apparatus, and a mobile base. The mobile base is configured to position the scanning apparatus at two spaced part positions including a (1) production position and a (2) calibration position. At the production position the scanning apparatus is configured to receive an energy beam from the beam source and to reflect and scan the energy beam through the window and to a build surface over the build platform to create a layer of the three-dimensional product. At the calibration position the scanning apparatus is configured to reflect the energy beam to the calibration device but not through the window.

公开(公告)号：US11007604B2

公开(公告)日：2021-05-18

申请号：US16032184

申请日：2018-07-11

Applicant: 3D Systems, Inc.

Inventor： Sam Coeck

IPC: B23K26/354 ,  B23K26/342 ,  B22F12/00 ,  B23K26/064 ,  B23K26/70 ,  B23K26/04 ,  B23K26/06 ,  B23K26/067 ,  B22F10/10 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02

Abstract: A three dimensional printing system includes a laser system, a beam splitter, a pinhole, a sensor, and a controller. The laser system emits a light beam of varying diameter carrying at least 100 watts of optical power along an optical path. The laser has an imaging plane along the optical path which can be coincident or close to a focal plane at which the beam has a minimum diameter. The beam splitter is positioned along the optical path to receive the beam and to transmit most of the optical power and to reflect remaining optical power. The pinhole is positioned along the optical path at the imaging plane to receive the reflected beam having a minimal diameter. The controller is configured to analyze a signal from the sensor to determine intensity and distribution parameters for the light beam.

公开(公告)号：US20180345412A1

公开(公告)日：2018-12-06

申请号：US16001693

申请日：2018-06-06

Applicant: 3D Systems, Inc.

Inventor： Jonas Van Vaerenbergh ,  Sam Coeck ,  Brawley Valkenborgs ,  Rudy Raeymaekers

IPC: B23K26/342 ,  G01B11/00 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B23K26/082 ,  B23K26/70 ,  B23K26/12

CPC classification number: B22F3/1055 ,  B22F2003/1056 ,  B23K26/032 ,  B23K26/04 ,  B23K26/042 ,  B23K26/082 ,  B23K26/0869 ,  B23K26/1224 ,  B23K26/123 ,  B23K26/127 ,  B23K26/342 ,  B29C64/268 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  G05B19/4015 ,  G11B7/1267 ,  H01S3/10 ,  H01S3/10069 ,  H01S3/13 ,  H01S3/1306 ,  H01S5/0617 ,  H01S5/0683

Abstract: The invention relates to an apparatus for layered manufacture of a three-dimensional product, in particular for application of an additive manufacturing technique such as selective laser melting. This apparatus has a build chamber in which said product is constructed and an optical system that extends outside of the build chamber. The optical system has at least a beam source to generate an energy beam and contains corresponding scanning means to move this beam. Here, a control unit is provided that controls the scanning means to move the beam so that it strikes a selected position. The wall of the build chamber features a closed window that is transparent for the beam so that it passes through the window and enters the build chamber.