LASER INDUCED BREAKDOWN SPECTROSCOPY ANALYSER
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United States of America Patent
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Issued Date -
Oct 17, 2013
app pub date -
Sep 15, 2011
filing date -
Oct 1, 2010
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Abandoned
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Abstract
A laser induced breakdown spectroscopy (LIBS) analyser (10) comprises an optical path P (shown by dashed lines P1 and dash-dot lines P2) and an automatic focus (or tracking) system (12). The optical path P focuses a laser beam emitted from a laser (14) onto a portion of sample S which is to be analysed by the analyser (10), and focuses radiation emitted by the sample S when irradiated by the laser beam to a detector (16). The automatic focus system (12) is capable of varying a length of the optical path P to maintain a constant spatial relationship (i.e. distance) between a focal point (18) of the laser beam and the sample S; as well as maintaining a constant instantaneous field of view (IFOV) of the detector (16) on the focal point of the laser.
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