Patent ID: 7764387

Claim:
An optical measurement device for determining at least two parameters of a measurement location of a first surface of a workpiece positioned in a known coordinate system wherein the first surface faces a first direction in the coordinate system, the optical measurement device comprising: a first light source providing a first measurement beam, the first measurement beam being directed at the first surface of the workpiece from a position at a first side of the workpiece; a first system of receiving optics, detecting an incoming position of the first measurement beam as reflected from the first surface of the workpiece, the first system of receiving optics positioned on an opposite side of the workpiece from the first light source, the first system of receiving optics including a position detector and an orientation detector; a second light source providing a second measurement beam, the second measurement beam being directed at a second surface, the second surface facing opposite the first surface; and a second system of receiving optics, detecting an incoming position of the second measurement beam, the second system of receiving optics positioned on an opposite side of the workpiece from the second light source.