Patent ID: 8983030
Filing Date: 2015-03-17
Classification: G01N,H05K

Abstract:
1. An inspection machine for a printed circuit board on which a plurality of electronic components is mounted, comprising: an imaging device having a function for capturing a close-up of an inspection target portion of the printed circuit board by approaching the printed circuit board; a detection unit that detects heights of electronic components on the printed circuit board to be subjected to inspections by irradiation light that is irradiated onto the printed circuit board in a first direction that is along a surface of the printed circuit board; a displacement unit that relatively displaces the detection unit and the printed circuit board along the surface of the printed circuit board in a second direction that crosses the first direction; and a control unit that controls the detection unit and the displacement unit, wherein: the control unit controls the detection unit to detect the heights of the electronic components mounted on the printed circuit board by activating the detection unit and the displacement unit before capturing the printed circuit board by the imaging device, the control unit sets a limit distance to a position higher than the highest electronic component among heights detected from the electronic components, thereby restricting a facing distance, by which the imaging device is approachable to the printed circuit board, to be the limit distance.