Patent ID: 7006237
Filing Date: 2006-02-28
Classification: B23K

Abstract:
1. A laser beam positioning device for laser processing equipment comprising: a stage where a work piece is placed; a laser oscillator that emits a laser beam; an optical unit that guides the laser beam so that the laser beam irradiates the work piece placed on the stage; a beam scanning unit that scans the laser beam guided by the optical unit, based on a command value, to process the work piece; a measurement unit that measures a processed position on the work piece at which the laser processing has been performed; and a control unit that calculates the command value from coordinates of the processed position and coordinates of a target position, wherein the control unit calculates an unknown parameter matrix by weighting the coordinates of the processed position and the command value, according to a distance between the coordinates of the target position and the coordinates of the processed position, the unknown parameter matrix optimally determining the command value to guide the laser beam onto the target position on the work piece.