METHODS FOR LASER PROCESSING TRANSPARENT WORKPIECES USING PULSED LASER BEAM FOCAL LINES AND CHEMICAL ETCHING SOLUTIONS

    公开(公告)号:US20190119150A1

    公开(公告)日:2019-04-25

    申请号:US16162644

    申请日:2018-10-17

    Abstract: A method for processing a transparent workpiece includes forming a closed contour line having a plurality of defects in the transparent workpiece such that the closed contour line defines a closed contour. Forming the closed contour line includes directing a pulsed laser beam through an aspheric optical element and into the transparent workpiece such that a portion of the pulsed laser beam directed into the transparent workpiece generates an induced absorption within the transparent workpiece, the induced absorption producing a defect within the transparent workpiece, and translating the transparent workpiece and the pulsed laser beam relative to each other along the closed contour line. The method further includes etching the transparent workpiece with a chemical etching solution at an etching rate of about 2.5 μm/min or less to separate a portion of the transparent workpiece along the closed contour line, thereby forming an aperture extending through the transparent workpiece, the aperture comprising an aperture perimeter extending along the closed contour.

    GAS PERMEABLE WINDOW AND METHOD OF FABRICATING THE SAME
    29.
    发明申请
    GAS PERMEABLE WINDOW AND METHOD OF FABRICATING THE SAME 审中-公开
    气体透气窗及其制造方法

    公开(公告)号:US20160279895A1

    公开(公告)日:2016-09-29

    申请号:US15078097

    申请日:2016-03-23

    Abstract: A gas permeable glass window, suitable for use with liquid interface additive manufacturing, has an optically transparent glass article greater than about 0.5 millimeters in thickness defining a first surface and a second surface. A plurality of gas channels are disposed through the article from the first surface to the second surface. The gas channels occupy less than about 1.0% of a surface area of the article and are configured such that the article has a gas permeability between about 10 barrers and about 2000 barrers.

    Abstract translation: 适用于液界面添加剂制造的透气玻璃窗具有大于约0.5毫米厚度的光学透明玻璃制品,其限定第一表面和第二表面。 多个气体通道穿过物品从第一表面到第二表面设置。 气体通道占据制品的表面积的约1.0%,并且构造成使得制品的气体渗透性介于约10巴与约2000巴之间。

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