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    STEREOLITHOGRAPHIC SYSTEM AND METHOD FOR REDUCING STEREOLITHOGRAPHIC PART DISTORTION
    131.
    发明专利
    STEREOLITHOGRAPHIC SYSTEM AND METHOD FOR REDUCING STEREOLITHOGRAPHIC PART DISTORTION 未知

    公开(公告)号：IL89979D0

    公开(公告)日：1989-12-15

    申请号：IL8997989

    申请日：1989-04-17

    Applicant: 3D SYSTEMS INC

    IPC: B29C35/08 ,  B29C67/00 ,  B29K105/24 ,  G06F

    Abstract: An improved stereolithography system for generating a three-dimensional object by creating a cross-sectional pattern of the object to be formed at a selected surface of a fluid medium capable of altering its physical state in response to appropriate synergistic stimulation by impinging radiation, particle bombardment or chemical reaction, using information defining the object which is specially processed to reduce curl, stress, birdnesting and other distortions, the successive adjacent laminae, representing corresponding successive adjacent cross-sections of the object, being automatically formed and integrated together to provide a step-wise laminar buildup of the desired object, whereby a three-dimensional object is formed and drawn from a substantially planar surface of the fluid medium during the forming process. Reducing stereolithographic distortion through isolation of stress is described.

    135.
    发明专利
    未知

    公开(公告)号：AT550688T

    公开(公告)日：2012-04-15

    申请号：AT02726099

    申请日：2002-03-26

    Applicant: 3D SYSTEMS INC

    Inventor： RAVNKILDE JAN TUE ,  HENNINGSEN HENNING

    IPC: G02B26/02 ,  B81B3/00 ,  B81B7/04 ,  G02B3/00 ,  G02B26/00

    Abstract: The invention relates to a micro light modulator arrangement ( 10 ) comprising at least one light transmission path ( 23 ) and at least one controllable shutter ( 11, 16 ) arranged for modulation of light transmitted via said at least one light transmission path ( 23 ), said at least a part of said light transmission path comprising a translucent solid material, and said at least a part of said light transmission path being an integral part of a substrate to which said at least one controllable shutter ( 11, 16 ) is anchored.

    136.
    发明专利
    未知

    公开(公告)号：AT516128T

    公开(公告)日：2011-07-15

    申请号：AT05725865

    申请日：2005-03-17

    Applicant: 3D SYSTEMS INC

    Inventor： HICKERSON KEVIN ,  BEDAL BRYAN ,  DIEPHUIS RICHARD

    IPC: B29B13/08 ,  B28B13/00 ,  B29C48/92 ,  B29C67/00

    Abstract: A three-dimensional printer adapted to construct three dimensional objects is disclosed. In an exemplary embodiment, the printer includes a first surface adapted to receive a bulk layer of sinterable powder, a polymer such as nylon powder; a radiant energy source, e.g., an incoherent heat source adapted to focus the heat energy to sinter an image from the layer of sinterable powder; and a transfer mechanism adapted to transfer or print the sintered image from the first surface to the object being assembled while fusing the sintered image to the object being assembled. The transfer mechanism is preferably adapted to simultaneously deposit and fuse the sintered image to the object being assembled. The process of generating an image and transferring it to the object being assembled is repeated for each cross section until the assembled object is completed.

    137.
    发明专利
    未知

    公开(公告)号：AT456075T

    公开(公告)日：2010-02-15

    申请号：AT06251473

    申请日：2006-03-20

    Applicant: 3D SYSTEMS INC

    Inventor： HULL CHARLES W ,  PARTANEN JOUNI P ,  SPERRY CHARLES R ,  DUNNE PATRICK ,  SCOTT SUZANNE M ,  MCNAMARA DENNIS F ,  MANNERS CHRIS R

    IPC: G03F7/00 ,  B29C67/00 ,  G03F7/20

    Abstract: A solid imaging method employing sub-pixel shifting in multiple exposures of the digitally light projected image of a cross-section of a three-dimensional object on a solidifiable liquid medium. The multiple exposures provide increased resolution, preserving image features in a three-dimensional object and smoothing out rough or uneven edges that would otherwise occur using digital light projectors that are limited by the number of pixels in an image projected over the size of the image. Algorithms are used to select pixels to be illuminated within the boundary of each image projected in the cross-section being exposed.

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