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    • 2. 发明申请
    • DOUBLE SIDED OPTICAL DISC SURFACE INSPECTOR
    • 双面光盘表面检测仪
    • WO1998010271A1
    • 1998-03-12
    • PCT/IB1997001231
    • 1997-09-05
    • WEA MANUFACTURING, INC.
    • WEA MANUFACTURING, INC.SUHAN, John, M.
    • G01N21/88
    • G01N21/9506
    • A system for simultaneously detecting imperfections of both sides of a dual sided compact disc (1) includes a self-centering chuck (7) for retaining the compact disc (1) and rotating it beneath two illumination sources (9) and dual video cameras (15) or other devices for receiving light from the illumination source (9) that reflects from the surface (17) under study. The cameras (15) are oriented to receive illumination reflected only from an imperfectly flat portion of the surfaces (17) being inspected. A stepping motor (19) is used to turn the compact disc (1) through a number of positions during at least one complete revolution while it is exposed to the light sources (9). The signals received in the video cameras (15) are then processed by a template algorithm to compare the light level received with that from an assumed flat portion of the disc.
    • 一种用于同时检测双面光盘(2)的两侧缺陷的系统包括一个用于保持光盘(1)并将其旋转在两个照明光源(9)和双摄像机(1)之下的自对中卡盘(7) 15)或用于接收来自所研究的表面(17)反射的来自照明源(9)的光的其它装置。 相机(15)被定向成接收仅从被检查的表面(17)的不完全平坦的部分反射的照明。 步进马达(19)用于在至少一个完整旋转期间将光盘(1)转动许多位置,同时暴露于光源(9)。 然后,通过模板算法处理在摄像机(15)中接收的信号,以将所接收的光级与来自盘的假定平坦部分的光级进行比较。