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    • 2. 发明申请
    • METHODS AND APPARATUS FOR DETERMINING GEOMETRIC PROPERTIES OF OPTICAL FIBER PREFORMS
    • 用于确定光纤预制件几何特性的方法和装置
    • WO2016022151A1
    • 2016-02-11
    • PCT/US2014/050368
    • 2014-08-08
    • HERAEUS TENEVO LLC
    • RASNIK, Ivan
    • G01M11/00G01B11/12G01B11/24G01N21/41
    • G01M11/37G01B11/08G01B11/24G01B11/25G01N21/412G06T7/60
    • Methods and apparatus for evaluating the geometric properties of optical fiber preforms, which methods include: providing an optical fiber preform having a longitudinal axis, an outer diameter and a circumference; providing a two-dimensional pattern having a length parallel to the longitudinal axis of the preform and a width greater than the outer diameter of the preform; providing an image capturing device disposed such that the preform is aligned between the pattern and the image capturing device; rotating the preform about its longitudinal axis and acquiring a first plurality of images of the pattern viewed through the preform at at least two different points along the circumference of the preform; and determining at least one geometric property of the preform from the first plurality of images.
    • 用于评估光纤预制棒的几何特性的方法和装置,所述方法包括:提供具有纵向轴线,外径和圆周的光纤预制件; 提供具有平行于预成型件的纵向轴线的长度和大于预成型件的外径的宽度的二维图案; 提供设置成使得所述预成型件在图案和图像捕获装置之间对准的图像捕获装置; 围绕其纵向轴线旋转预成型件并且沿着预成型件的圆周在至少两个不同点处获取通过预成型件观察的图案的第一多个图像; 以及从所述第一多个图像确定所述预成型件的至少一个几何特性。