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    Apparatus and method for determining the position of a component prior to placement
    4.
    发明授权
    Apparatus and method for determining the position of a component prior to placement 失效
    用于在放置之前确定部件的位置的装置和方法

    公开(公告)号：US5559727A

    公开(公告)日：1996-09-24

    申请号：US201369

    申请日：1994-02-24

    申请人： Michael T. Deley ,  Edwin R. Phillips

    发明人： Michael T. Deley ,  Edwin R. Phillips

    IPC分类号： H05K13/04 ,  G01B11/00

    CPC分类号： H05K13/08

    摘要： Apparatus and a method for determining the position of a component held on the end of a pick up tool includes a pick up tool and positioning sensing system mounted on a movable frame with each other. The position sensing system includes an adjustable light source for producing an intense fan of light onto a collimating lens. The collimating lens produces an object field comprising a thin wide sheet of collimated light to be projected on a component held by the pick up tool. The thin wide sheet of light is projected on a component whose position is to be determined and the unblocked rays of light are projected onto an objective focusing lens which focuses the unblocked light through a very small aperture onto a relay lens which receives the refocused unblocked rays of light and produces refocused collimated light rays which are directed as an image onto a linear array sensor having a plurality of high density pixel sensors whose position is known relative to the pick up tool. The component whose position is to be determined is rotated in the imaging field. A computer/controller is coupled to the linear array sensor and an encoder for producing sets of X, Y and O-- data indicative of the refocused collimated light rays projected onto said pixel sensor and the computer/controller is programmable for analyzing said digital data and for determining the X, Y and O-- position of the component on the pick up tool.

    摘要翻译： 用于确定保持在拾取工具的端部上的部件的位置的装置和方法包括拾取工具和安装在可移动框架上的定位传感系统。 位置感测系统包括可调节的光源，用于在准直透镜上产生强烈的光风扇。 准直透镜产生一个物体场，该物体场包括一个薄的准直光平板，以投射在由拾取工具保持的部件上。 薄的宽光束投影在要确定位置的部件上，未阻挡的光线投射到物镜聚焦透镜上，该物镜聚焦透镜将未遮挡的光通过非常小的光圈聚焦到接收重聚焦的未阻挡光线的中继透镜 并产生作为图像被引导到具有多个相对于拾取工具已知的位置的多个高密度像素传感器的线性阵列传感器的重新聚焦的准直光线。 要确定其位置的部件在成像领域中旋转。 计算机/控制器耦合到线性阵列传感器和编码器，用于产生指示投射到所述像素传感器上的重新聚焦的准直光线的X，Y和+ E，Sez O + EE数据集，并且计算机/控制器是可编程的 用于分析所述数字数据并确定拾取工具上的组件的X，Y和+ E，Sez O- + EE位置。