Patent ID: 9273998
Filing Date: 2016-03-01
CPC Classification: G01J,G01N

Claim Text:
1. A hand-held device for analysing the material composition of an object via plasma spectrum analysis, the device comprising: a manually held casing; a laser housing within the casing; a laser within the housing, the laser having a projection axis; openings in the housing and the casing through which a beam from the laser can be projected onto an object to be analysed with the establishment of a plasma at a surface of the object; a first mirror mounted in the housing for receiving plasma emitted light within the openings, via the openings, the mirror being to one side of the projection axis with its normal axis acutely angled to the normal to the projection axis for reflection of the plasma light to the other side of the projection axis; a second, focusing mirror mounted in the housing for receiving the plasma light reflected by the first mirror and reflecting it back again to the first side of the projection axis, the focusing mirror being angled with a central normal axis more acutely angled to the normal to the projection axis than the first mirror; and a receptor for receiving the plasma light from the second mirror and for passing the plasma light to a spectral analyser.