Patent ID: 6633376
Filing Date: 2003-10-14
Classification: G01N,G01R

Abstract:
An apparatus for inspecting a printed circuit board onto which at least one of a stop hole or a groove is processed, the apparatus comprising:a laser oscillator; a scanning device including: two scanning optical systems scanning within mutually orthogonal planes, and a scan lens, wherein the scanning device positions an irradiation portion of a laser beam emitted from said laser oscillator to a position of arbitrary coordinates in an X-axis direction and a Y-axis direction orthogonal to said X-axis direction; a detector for detecting a light generated from the printed circuit board irradiated with the laser beam; and a controller storing a position of coordinates of the at least one of the stop hole or the groove in the printed circuit board, and controlling said scanning device to direct the irradiation position of the laser beam to a position corresponding to the stored position of coordinates.