公开(公告)号：JP2002357781A

公开(公告)日：2002-12-13

申请号：JP2002047783

申请日：2002-02-25

Applicant: 3 D SYSTEMS INC

Inventor： PARTANEN JOUNI P ,  TANG NANSHENG ,  WU XINGKUN

IPC: G03F7/20 ,  B23K26/04 ,  B23K26/06 ,  B23K26/067 ,  B23K26/073 ,  B29C67/00 ,  G02B7/10 ,  G02B27/09 ,  G02B27/40

Abstract: PROBLEM TO BE SOLVED: To provide a easily mountable solid state laser illumination system for stereolithography with which the optimization of characteristics is easily controlled. SOLUTION: The illumination system is provided with the optical system capable of adjusting the size of a light beam and adjusting the focus of the light beam. A spot size control optical system adjusts the overall size of the light beam and separately adjusts the ellipticity of the beam, primarily in one dimension. Light from the spot size control optical system passes to a focus control optical system that controls the overall focus of the light beam and adjusts the astigmatism of the beam by altering the focal position of the light beam in one dimension. The laser system, the spot size control optical system and the focus control optical system are within an enclosure. Actuators under remote control from outside of the enclosure adjust both of the spot size control optical system and the focus control optical system in the thermal environment of the illumination system.

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.