US2009097126A1PendingUtilityA1

Method of laser marking, laser marking apparatus and method and apparatus for detecting a mark

47
Assignee: TOSHIBA KKPriority: Mar 26, 2004Filed: Aug 3, 2007Published: Apr 16, 2009
Est. expiryMar 26, 2024(expired)· nominal 20-yr term from priority
Inventors:Atsushi FujiharaMichio Nakayama
H10W 46/501H10W 46/00B23K 26/0604B23K 26/0676B23K 26/067B41M 5/24H10P 95/00
47
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Claims

Abstract

A method and apparatus for laser marking is disclosed. An interference fringe is formed on a subject to be marked using a laser beam to make a marking.

Claims

exact text as granted — not AI-modified
1 .- 17 . (canceled) 
   
   
       18 . A method of laser marking, comprising:
 forming an interference fringe by superposing laser fluxes on a subject to be processed using the interference fringe; and   processing a mark on the subject by moving a spot of the interference fringe on the subject to draw the mark.   
   
   
       19 . A method of laser marking according to  claim 18 , wherein
 forming the interference fringe includes emitting a laser beam, and dividing the laser beam into the laser fluxes.   
   
   
       20 . A method of laser marking according to  claim 19 , wherein
 dividing the laser beam includes letting the laser beam pass through a fly-eye lens.   
   
   
       21 . A method of laser marking according to  claim 20 , wherein
 the fly-eye lens has convex lenses arranged at equal spaces on a concentric circumference.

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