公开(公告)号：JP2000272016A

公开(公告)日：2000-10-03

申请号：JP2000031246

申请日：2000-02-08

Applicant: 3 D SYSTEMS INC

Inventor： MANNERS CHRIS R ,  GUERTIN MICHELLE D ,  NGUYEN HOP D ,  PARTANEN JOUNI P ,  TANG NANSHENG ,  EVERETT MICHAEL A

IPC: B29C67/00

Abstract: PROBLEM TO BE SOLVED: To form a three-dimensional object by exposing the object to first and second beams to form a next layer of the object according to data for altering a layer of the material, repeating forming of the layer and exposing to a stimulation, and forming the object of a plurality of layers bonded to each other. SOLUTION: Data representing a three-dimensional object is formed by a computer 67. First and second beams are output from a laser head 70 to a pair of X-Y scanning mirrors 82 through an optical path 85 via an AOM 72, k a first frequency conversion crystal 74, a second frequency conversion crystal 76, a pair of optical path turning mirror 78 and a condensing optical system 80. A next layer is formed on the layer of the object 15 of a material 15 by the pair of the mirrors 82 while altering the data by manipulating the data. Thus, forming the layer of the object 15 and exposing to the stimulation are repeated, and the object 15 is formed of a plurality of layers bonded to each other.

公开(公告)号：JP2000280359A

公开(公告)日：2000-10-10

申请号：JP2000031242

申请日：2000-02-08

Applicant: 3 D SYSTEMS INC

Inventor： GUERTIN MICHELLE D ,  CHARLES W HULL ,  NGUYEN HOP D

IPC: B29C67/00 ,  B29C35/02 ,  B29C35/08 ,  B29C41/02 ,  G05B19/4099 ,  G06F17/50 ,  G06F19/00

Abstract: PROBLEM TO BE SOLVED: To reduce a distortion and to rapidly form a three-dimensional object by forming a layer of a liquid-like material on an object formed layer, exposing the material layer with a stimulus, forming a next layer connected to the object formed layer, repeating the steps, and forming the object by the layers bonded to each other. SOLUTION: In the apparatus for stereolithographically forming a three- dimensional object forms the object of layers bonded to each other by alternately repeating forming of a coating of a material and selectively curing the coating. The forming is started in the state that an elevation base 20 is sunk by a thickness of one layer under an upper surface 30 of a photopolymerizable material 14. The coating of the material 14 is selectively exposed with a stimulus beam, the material of the exposed portion is cured to a desired depth, and an initially cured layer stuck to the base 20 is formed. After the first formation of the cured layer, the base 20 and the one initial cured layer adhered to the base 20 and of a net thickness of the one layer is sunk in the material. Thus, the distortion is reduced, and the forming speed of the object can be accelerated.