公开(公告)号：WO2020006260A1

公开(公告)日：2020-01-02

申请号：PCT/US2019/039548

申请日：2019-06-27

Applicant: 3D SYSTEMS, INC.

Inventor： COOPER, Guthrie ,  CLAY, John D.

IPC: B29C64/153 ,  B29C64/25 ,  B29C64/393 ,  B33Y50/02

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：WO2018160525A1

公开(公告)日：2018-09-07

申请号：PCT/US2018/019843

申请日：2018-02-27

Applicant: 3D SYSTEMS, INC.

Inventor： COOPER, Guthrie

IPC: B33Y10/00 ,  B33Y30/00 ,  B33Y50/02 ,  B29C64/393 ,  B29C64/282

Abstract: A three dimensional printing system (2) is configured to form a three dimensional article of manufacture (12) through a layer-by-layer process. The layers are formed by selectively adding photocure resin (6) onto a lower face (24) of the three dimensional article of manufacture. The three dimensional printing system includes a plurality of light engines (30) that are configured to define a corresponding plurality of build fields (31) in the resin. The plurality of build fields define one or more overlap zones (32). The plurality of light engines are configured to define extended threshold zones (34A, 34B) within the overlap zones that correspond to light engine edge defects and artifacts. A light engine applies a transparency value of less than a specified threshold over an extended threshold zone proximate to an edge of the build field corresponding to the light engine.

公开(公告)号：WO2018125596A1

公开(公告)日：2018-07-05

申请号：PCT/US2017/066366

申请日：2017-12-14

Applicant: 3D SYSTEMS, INC.

Inventor： COOPER, Guthrie

IPC: B29C64/135 ,  B29C64/393

Abstract: A method and system for calibrating a three dimensional printing system (2) includes a specialized sensor (48). The three dimensional printing system forms a three dimensional article of manufacture through a layer-by-layer process. Layers are formed by the operation of a light engine (10) selectively curing photocure resin onto a face of the three dimensional article of manufacture. The sensor includes a photodetector (52) overlaid by an optical element (54, 55, 56). The optical element simulates a "dense portion" of an optical path between the light engine and the face of the three dimensional article of manufacture being formed. The "dense portion" of the optical path includes a layer of photocure resin that is disposed between the light engine and the face of the three dimensional article of manufacture.

公开(公告)号：WO2020006253A1

公开(公告)日：2020-01-02

申请号：PCT/US2019/039539

申请日：2019-06-27

Applicant: 3D SYSTEMS, INC.

Inventor： COOPER, Guthrie

IPC: B29C64/135 ,  B29C64/264 ,  B29C64/393 ,  B33Y30/00

Abstract: A three-dimensional printing system is configured to selectively solidify a build material at a build plane in a layer-by-layer manner. The three-dimensional printing system includes a laser module, a scan module, and a controller. The laser module is for emitting a light beam along a main optical path from the laser module to the build plane. The scan module includes a motorized mirror and a sensor. The motorized mirror includes a substrate having an optical coating that reflects at least 90% of incoming beam power such that the mirror transmits no more than 10% of the incoming beam power. The sensor is positioned to receive transmitted light from the mirror. The controller is configured to operate the laser module to emit the light beam along the main optical path, analyze a signal from the sensor, and based upon the analysis, to estimate a calibration error for the laser module.

公开(公告)号：WO2012074986A1

公开(公告)日：2012-06-07

申请号：PCT/US2011/062361

申请日：2011-11-29

Applicant: 3D SYSTEMS, INC. ,  COOPER, Guthrie

Inventor： COOPER, Guthrie

IPC: B29C67/00

CPC classification number: B29C64/124

Abstract: Stereolithography systems (10) and methods using internal laser modulation are disclosed. The system includes an internally modulated diode-pumped frequency-multiplied solid-state (DPFMSS) laser 40. There is no external modulation system (EMS) within an external optical path (OPE) between the laser and a scanning system (80). The scanning system directs a laser beam (72) with laser pulses (72P) to a focus position (FP) on surface (23) of a build material (22) to form bullets (25) therein to define a build layer (30) based on build instructions for forming a three-dimensional object (32).

Abstract translation: 公开了立体光刻系统（10）和使用内部激光调制的方法。 该系统包括内部调制的二极管泵浦倍频固态（DPFMSS）激光器40.在激光器和扫描系统（80）之间的外部光路（OPE）内没有外部调制系统（EMS）。 扫描系统将具有激光脉冲（72P）的激光束（72）引导到构建材料（22）的表面（23）上的聚焦位置（FP），以在其中形成子弹（25）以限定构建层（30） 基于用于形成三维对象（32）的构建指令。

公开(公告)号：WO2020006261A1

公开(公告)日：2020-01-02

申请号：PCT/US2019/039550

申请日：2019-06-27

Applicant: 3D SYSTEMS, INC.

Inventor： COOPER, Guthrie

IPC: B29C64/135 ,  B33Y30/00

Abstract: A three-dimensional printing system for manufacturing a three-dimensional article includes a build platform, a light engine, a sensor, and a controller. The build platform is for supporting the three-dimensional article. The light engine is for addressing the build plane for selectively solidifying the material layer onto an active surface. The sensor is mounted on the light engine and is configured to generate a signal based upon vibrations from an external source. The controller is configured to form layers of the three dimensional article. Concurrent with forming the layers, the controller is configured to receive a signal from the sensor, analyze the signal to compare received vibrations to a predetermined vibration threshold, and, if the received vibrations exceed the predetermined threshold, take further action.

公开(公告)号：WO2009026520A1

公开(公告)日：2009-02-26

申请号：PCT/US2008/074021

申请日：2008-08-22

Applicant: 3D SYSTEMS, INC. ,  COOPER, Guthrie ,  KNAACK, Christopher

Inventor： COOPER, Guthrie ,  KNAACK, Christopher

IPC: B29C67/00 ,  G03F7/00

CPC classification number: B23K26/042 ,  B23K33/00 ,  B29C64/135 ,  B29C64/20 ,  B33Y30/00 ,  B33Y40/00 ,  B33Y50/02 ,  B33Y70/00 ,  G02B26/101 ,  G03F7/0037

Abstract: Systems and methods for calibrating a solid-imaging system (10) are disclosed. A calibration plate (110) having a non-scattering surface (140) with a plurality (150) of light-scattering fiducial marks (156) in a periodic array is disposed in the solid-imaging system. The actinic laser beam (26) is scanned over the fiducial marks, and the scattered light (26S) is detected by a detector (130) residing above the calibration plate. A computer control system (30) is configured to control the steering of the light beam and to process the detector signals (SD) so as to measure actual center positions (x A , y A ) of the fiducial marks and perform an interpolation that establishes a calibrated relationship between the angular positions of the mirrors and (x,y) locations at the build plane (23). The calibrated relationship is then used to steer the laser beam in forming a three-dimensional object (50).

Abstract translation: 公开了用于校准固体成像系统（10）的系统和方法。 在固体成像系统中设置具有周期性排列的具有多个（150）光散射基准标记（156）的非散射表面（140）的校准板（110）。 光化激光束（26）被扫描在基准标记上，散射光（26S）由位于校准板上方的检测器（130）检测。 计算机控制系统（30）被配置为控制光束的转向并处理检测器信号（SD），以便测量基准标记的实际中心位置（xA，yA），并执行建立校准的内插 反射镜的角位置与构造平面（23）处的（x，y）位置之间的关系。 然后校准的关系用于引导激光束形成三维物体（50）。