Patent ID: 6191848
Filing Date: 2001-02-20
Classification: G01J

Abstract:
A sensor holder apparatus for a laser power sensor, the apparatus comprising:(i) a base unit arranged for mounting on a supporting surface of a laser beam unit;(ii) a sensor mounting means arranged to be rigidly coupled to a laser power sensor by a connecting elongate bar therebetween; and(iii) an attachment means for movably attaching the sensor mounting means to the base unit, the attachment means being arranged for movement of the sensor mounting means into a position in which the sensor can be positioned in the path of a laser beam to be monitored and exposed to the whole cross-section of the laser beam wherein the attachment means comprises (i) first, second and third translation stages, and (ii) a plurality of adjustment means comprising adjustment screws, each adjustment means being coupled to each of the translation stages, each translation stage and each adjustment means being arranged to move the sensor mounting means with respect to the base unit along a different axis of movement.