Patent ID: 6351483
Filing Date: 2002-02-26
Classification: G01B

Abstract:
A method of correcting an optical axis of a laser projecting device, comprising the steps of:(a) providing a cylindrical tubular member made of a deformable material and comprising a base section, a laser generation unit mounted inside the base section and adapted to project a laser beam along an optical axis, the tubular member having an extension section and a reduced-diameter circumferential groove between the base section and the extension section; (b) rotating the tubular member; (c) providing a reference point in front of the tubular member that corresponds to a rotational axis of the tubular member; (d) projecting a laser beam from the tubular member towards the reference point; (e) detecting a spatial deviation between the optical axis and the reference point; and (f) deforming the base section of the tubular member based on the spatial deviation to cause the base section to be angularly displaced with respect to the tubular member until the optical axis and the rotational axis coincide.