Efficient surface texturing of objects produced by additive manufacturing

    公开(公告)号:US11602899B2

    公开(公告)日:2023-03-14

    申请号:US16760114

    申请日:2018-10-23

    申请人: Carbon, Inc.

    发明人: Ruwen Liu

    摘要: A method of making a three-dimensional object from an object geometry data file that includes (a) slicing said object geometry data file to produce a rasterized image sequence file; (b) generating a signed distance field from said object geometry data file; (c) selecting, from a library of procedural texture functions, a procedural texture function defining a continuous internal or external set of features; (d) modifying said rasterized image sequence to include said internal or external set of features based on said signed distance field to thereby produce a modified image sequence file; and then (e) producing said three-dimensional object by additive manufacturing from said modified image sequence file, said three-dimensional object having said selected internal feature included therein and/or external feature included thereon.

    MECHANICALLY ANISOTROPIC 3D PRINTED FLEXIBLE POLYMERIC SHEATH

    公开(公告)号:US20220403102A1

    公开(公告)日:2022-12-22

    申请号:US17762208

    申请日:2020-10-20

    申请人: Carbon, Inc.

    IPC分类号: C08G63/08 B29C64/129

    摘要: A connective or supportive sheath comprising, consisting of, or consisting essentially of a hollow tube having a circumferential or perimeter wall, the wall having an inner surface and an outer surface, the wall comprising interconnected, radially projecting, partitions, the partitions forming radially extending pores, the pores extending from said inner surface through said outer surface, and wherein the tube is comprised of, consists of, or consists essentially of a flexible or elastic polymer.

    Resin extractor for additive manufacturing

    公开(公告)号:US11478988B2

    公开(公告)日:2022-10-25

    申请号:US17371833

    申请日:2021-07-09

    申请人: Carbon, Inc.

    摘要: A method of separating excess resin from at least one object, includes: (a) stereolithographically producing at least one object on at least one carrier platform, each carrier platform having a planar build surface to which at least one object is connected, each object carrying excess resin on a surface thereof; then (b) mounting each carrier platform to a rotor; (c) centrifugally separating excess resin from each object by spinning the rotor with each carrier platform connected thereto while each object remains connected to each carrier platform; and then (d) removing each carrier platform from the rotor with each object thereon, with excess resin separated therefrom.

    Static liquid interface production of lenses and other contoured objects

    公开(公告)号:US11440223B2

    公开(公告)日:2022-09-13

    申请号:US16526071

    申请日:2019-07-30

    申请人: Carbon, Inc.

    IPC分类号: B29C35/02 B29C35/08 B29D11/00

    摘要: An apparatus useful for rapidly producing at least one object having a contoured surface portion from a light-polymerizable resin is provided. The apparatus includes (a) a window containing an inhibitor of polymerization, on which window a coating of light polymerizable resin can be placed, with the inhibitor of polymerization forming a first dead zone of unpolymerizable resin in the light polymerizable resin; (b) a polymerizing light source operatively associated with the window and positioned for projecting polymerizing light through the window; (c) a controller operatively associated with said light source and configured to pattern and project said polymerizing light at a first light dosage sufficient to form the object in the resin under stationary conditions, while spatially modulating the first light dosage so that the first dead zone is spatially contoured in thickness, to produce a first contoured surface portion on each object, which first contoured surface portion is in contact with the first dead zone of unpolymerizable resin.