Patent ID: 6927863

Claim:
An apparatus for measuring a measurement object, having an optical sensor, the optical sensor having an optical probe having a light source and a measurement objective for directing a light beam onto a measurement object and a receiver device for detecting a light beam reflected from the measurement object and generating a corresponding measurement signal; an advancing apparatus for altering the distance between the optical sensor and the measurement object in a first coordinate direction in a manner dependent on the measurement signal generated by the receiver device; and an evaluation unit for determining the coordinates of the measurement point on the measurement object, wherein, the receiver device has a position-sensitive receiver which generates an evaluatable measurement signal within a measurement window; the advancing apparatus sets the distance between the optical sensor and the measurement object in such a way that the receiver of the receiver device receives the light beam reflected from the measurement, object within the measurement window; and the evaluation unit determines the coordinates of the measurement point on the measurement object from the position of the optical sensor and the measurement signal generated by the receiver device.