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    Stereolithographic apparatus and method
    3.
    发明授权
    Stereolithographic apparatus and method 失效
    立体光刻设备和方法

    公开(公告)号：US5133987A

    公开(公告)日：1992-07-28

    申请号：US427885

    申请日：1989-10-27

    申请人： Stuart T. Spence ,  Charles W. Lewis ,  Mark A. Lewis

    发明人： Stuart T. Spence ,  Charles W. Lewis ,  Mark A. Lewis

    IPC分类号： G02B26/10 ,  B23K26/04 ,  B29C35/08 ,  B29C67/00 ,  B29K105/24

    CPC分类号： B29C67/0066 ,  B23K26/04 ,  B23K26/043

    摘要： A stereolithographic device and method including a process module, a control module and a service module. A laser is employed through a dynamic mirror system controlled by the control module to generate solidified cross sections of a selected part design on the surface of a photocurable polymer liquid. By lowering cured cross sections into the vat, additional cross sections can be perpared and joined therewith to define a prototype product. A stationary mirror in the beam path between the dynamic mirror system and the photocurable polymer is employed to make the system more compact and practical. A calibration and normalization process provides correction to distortions and misalignment of the stationary mirror.

    摘要翻译： 一种包括处理模块，控制模块和服务模块的立体光刻设备和方法。 通过由控制模块控制的动态反射镜系统采用激光，以在光固化聚合物液体的表面上产生所选部分设计的凝固横截面。 通过将固化的横截面降低到大桶中，可以增加另外的横截面并与之连接以限定原型产品。 使用动态反射镜系统和光固化聚合物之间的光束路径中的静止反射镜来使系统更紧凑和实用。 校正和归一化过程提供对固定镜的失真和未对准的校正。

    Stereolithographic curl reduction
    4.
    发明授权
    Stereolithographic curl reduction 失效
    立体光刻卷曲减少

    公开(公告)号：US5273691A

    公开(公告)日：1993-12-28

    申请号：US868462

    申请日：1992-04-14

    申请人： Charles W. Hull ,  Stuart T. Spence ,  Charles W. Lewis ,  Wayne Vinson ,  Raymond S. Freed ,  Dennis R. Smalley

    发明人： Charles W. Hull ,  Stuart T. Spence ,  Charles W. Lewis ,  Wayne Vinson ,  Raymond S. Freed ,  Dennis R. Smalley

    IPC分类号： B29C35/08 ,  B29C67/00 ,  B29K105/24 ,  B44B1/00 ,  G03F7/00 ,  G03F7/20 ,  B29C41/02

    CPC分类号： B29C67/0066 ,  B29C67/0092 ,  B44B1/006 ,  G03F7/0037 ,  G03F7/70416

    摘要： An improved stereolithography system for generating a three-dimensional object by creating a cross-sectional pattern of the object to 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, information defining the object being structurally specified to reduce curl, stress and distortion in the ultimately formed object, 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. A stereolithographic distortion known as curl is defined, and several techniques to eliminate or reduce curl are described, including dashed line, bent line, secondary structure, rivets, and multi-pass techniques. In addition, a quantitative measurement of curl known as the curl factor, and a test part known as a quarter cylinder are described, which together can be used to measure the effectiveness of the above techniques in reducing curl.

    摘要翻译： 一种用于产生三维物体的改进的立体光刻系统，其通过在物体的横截面图形上形成，以形成在流体介质的选定表面上，该液体介质能够响应于通过撞击辐射，粒子轰击或者对其进行适当的协同刺激而改变其物理状态 化学反应，定义物体的信息在结构上被规定以减少最终形成的物体中的卷曲，应力和变形，代表对象的相应连续的相邻横截面的连续相邻层被自动形成并集成在一起， 从而在成形过程中从流体介质的基本上平坦的表面形成三维物体并从其中抽出三维物体。 定义了称为卷曲的立体光刻变形，描述了消除或减少卷曲的若干技术，包括虚线，弯曲线，二次结构，铆钉和多遍技术。 此外，描述了称为卷曲因子的卷曲的定量测量，以及被称为四分之一圆筒的测试部件，它们可以一起用于测量上述减少卷曲技术的有效性。

    Stereolithographic curl reduction
    6.
    发明授权
    Stereolithographic curl reduction 失效
    立体光刻卷曲减少

    公开(公告)号：US6048188A

    公开(公告)日：2000-04-11

    申请号：US106950

    申请日：1998-06-30

    申请人： Charles W. Hull ,  Stuart T. Spence ,  Charles W. Lewis ,  Wayne S. Vinson ,  Raymond S. Freed ,  Dennis R. Smalley

    发明人： Charles W. Hull ,  Stuart T. Spence ,  Charles W. Lewis ,  Wayne S. Vinson ,  Raymond S. Freed ,  Dennis R. Smalley

    IPC分类号： B29C67/00 ,  B44B1/00 ,  G01J1/42 ,  G03F7/00 ,  G03F7/20 ,  G06T17/00 ,  G06T17/10 ,  G06T17/20 ,  B29C35/08 ,  B29C41/02 ,  B29C41/52

    CPC分类号： B29C67/0066 ,  B29C67/0092 ,  B44B1/006 ,  G01J1/4257 ,  G03F7/0037 ,  G03F7/70416 ,  G06T17/00 ,  G06T17/10 ,  G06T17/20 ,  G05B2219/49013

    摘要： An improved stereolithography system for generating a three-dimensional object by creating a cross-sectional pattern of the object to 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, information defining the object being structurally specified to reduce curl, stress and distortion in the ultimately formed object, 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. A stereolithographic distortion known as curl is defined, and several techniques to eliminate or reduce curl are described, including dashed line, bent line, secondary structure, rivets, and multi-pass techniques. In addition, a quantitative measurement of curl known as the curl factor, and a test part known as a quarter cylinder are described, which together can be used to measure the effectiveness of the above techniques in reducing curl.

    摘要翻译： 一种用于产生三维物体的改进的立体光刻系统，其通过在物体的横截面图形上形成，以形成在流体介质的选定表面上，该液体介质能够响应于通过撞击辐射，粒子轰击或者对其进行适当的协同刺激而改变其物理状态 化学反应，定义物体的信息在结构上被规定以减少最终形成的物体中的卷曲，应力和变形，代表对象的相应连续的相邻横截面的连续相邻层被自动形成并集成在一起， 从而在成形过程中从流体介质的基本上平坦的表面形成三维物体并从其中抽出三维物体。 定义了称为卷曲的立体光刻变形，描述了消除或减少卷曲的若干技术，包括虚线，弯曲线，二次结构，铆钉和多遍技术。 此外，描述了称为卷曲因子的卷曲的定量测量，以及被称为四分之一圆筒的测试部件，它们可以一起用于测量上述减少卷曲技术的有效性。