Fixture and method for optical alignment in a system for measuring a surface in contoured glass sheets

    公开(公告)号:US11867630B1

    公开(公告)日:2024-01-09

    申请号:US17884116

    申请日:2022-08-09

    CPC classification number: G01N21/6456 G01N21/958 G01N2201/06113

    Abstract: An optical inspection system is provided with a fixture to support a glass sheet, with the fixture having an optical fiducial. An ultraviolet laser and associated optics form a planar laser sheet that intersects a surface of the glass sheet causing the surface to fluoresce and form a visible wavelength line thereon. A camera has an image sensor for detecting the optical fiducial and the visible wavelength line across at least a portion of a width of the sheet. A control system is configured to (i) image the optical fiducial on the fixture, (ii) define an optical fiducial coordinate system from the imaged optical fiducial, (ii) receive a mathematical model of the glass sheet in a model coordinate system, and (iii) relate the optical fiducial coordinate system to the model coordinate system via at least one transformation. A method of using a non-contact optical inspection system is also provided.

    System and associated method for online detection of small defects on/in a glass sheet

    公开(公告)号:US10267750B2

    公开(公告)日:2019-04-23

    申请号:US15428401

    申请日:2017-02-09

    Abstract: A small defect detection apparatus installed online in a glass sheet processing system includes a line scan camera, a background screen including contrasting elements arranged in a pre-defined pattern, an upstream conveyor and a downstream conveyor, wherein the upstream conveyor and downstream conveyor are positioned end-to-end, spaced apart by a selected size gap such that the camera may acquire multiple images of the background screen as the unsupported portion of the glass sheet is conveyed over the gap, and a computer programmed to execute logic for receiving the set of image data comprising multiple images of the background screen and identifying small defects in the glass from the data. The system may also include a glass sheet part identifier and a programmable control including logic for analyzing acquired image data and selecting an area of interest on the glass sheet for the analysis.

    System and method for measuring reflected optical distortion in contoured glass sheets
    10.
    发明授权
    System and method for measuring reflected optical distortion in contoured glass sheets 有权
    用于测量轮廓玻璃板反射光学变形的系统和方法

    公开(公告)号:US09470641B1

    公开(公告)日:2016-10-18

    申请号:US14752033

    申请日:2015-06-26

    Abstract: A system for measuring optical distortion in a contoured glass sheet includes a conveyor for conveying the glass sheet in a first direction, at least one display projecting a preselected multi-phase non-repeating contrasting pattern, and at least one camera, each one of the cameras uniquely paired with one of the displays. The system may also include a control programmed to execute logic for controlling each of the cameras to acquire the desired images, and logic for analyzing and combining the data acquired by the cameras to construct a definition of the surface of the glass sheet, and logic for performing one or more optical processing operations on the surface data to analyze the optical characteristics of the glass sheet.

    Abstract translation: 用于测量轮廓玻璃板中的光学变形的系统包括用于沿第一方向传送玻璃板的传送器,至少一个展示预选多相非重复对比图案的显示器和至少一个照相机,每个照相机 摄像机与其中一个显示屏独特配对。 该系统还可以包括被编程为执行用于控制每个相机以获取期望图像的逻辑的控制,以及用于分析和组合由相机获取的数据以构建玻璃板表面的定义的逻辑,以及用于 对表面数据执行一个或多个光学处理操作以分析玻璃板的光学特性。

Patent Agency Ranking