公开(公告)号：US06384911B1

公开(公告)日：2002-05-07

申请号：US09664777

申请日：2000-09-19

申请人： Guang Shiah Wang ,  Chih Yuan Chen ,  Jacky Chen ,  Shi Hsuan Hung ,  Wu Yu Hsiao

发明人： Guang Shiah Wang ,  Chih Yuan Chen ,  Jacky Chen ,  Shi Hsuan Hung ,  Wu Yu Hsiao

IPC分类号： G01N2100

CPC分类号： G01N21/95692 ,  G01R31/2805 ,  H05K1/0269 ,  H05K3/0047

摘要： The present invention proposes an apparatus and a method for detecting the accuracy of drilled holes on a PCB, which can detect the positions, sizes, counts, and wall roughness of drilled holes on a PCB. The apparatus comprises an optical scanning tool and a platform situated below the optical scanning tool. The optical scanning tool can be positioned and moved. Two projecting light sources of parallel light beam are installed thereon to project light to the PCB. A signal receiver is installed between the two projecting light sources. A magnification lens is installed below the signal receiver. The signal receiver receives the light signal of the two projecting light sources reflected from the PCB via the magnification lens. The platform is used to place the PCB. The platform can move with respect to the optical scanning tool to control the distance between the optical scanning tool and the platform. Through the reception of reflected light signals from different positions of the PCB by the signal receiver, the data of drilled holes on the PCB can be calculated out by a computer.

摘要翻译： 本发明提出了一种用于检测PCB上钻孔精度的装置和方法，其可以检测PCB上钻孔的位置，尺寸，计数和壁粗糙度。 该装置包括光学扫描工具和位于光学扫描工具下方的平台。 光学扫描工具可以定位和移动。 平行光束的两个投影光源安装在其上以将光投影到PCB。 信号接收器安装在两个投影光源之间。 放大镜头安装在信号接收器下方。 信号接收器通过放大透镜接收从PCB反射的两个投影光源的光信号。 该平台用于放置PCB。 平台可以相对于光学扫描工具移动以控制光学扫描工具和平台之间的距离。 通过信号接收器接收来自PCB的不同位置的反射光信号，PCB上的钻孔数据可由计算机计算出来。