US 11,982,819 B2
Optical fiducial generation for galvanometric scanner calibration
Jay Small, Vancouver, WA (US); and Robert J. Martinsen, West Linn, OR (US)
Assigned to nLIGHT, Inc., Camas, WA (US)
Filed by NLIGHT, INC., Camas, WA (US)
Filed on Oct. 14, 2021, as Appl. No. 17/501,932.
Application 17/501,932 is a continuation of application No. 15/945,550, filed on Apr. 4, 2018, granted, now 11,173,548.
Claims priority of provisional application 62/481,637, filed on Apr. 4, 2017.
Prior Publication US 2022/0143700 A1, May 12, 2022
Int. Cl. B33Y 10/00 (2015.01); B22F 10/28 (2021.01); B22F 10/31 (2021.01); B22F 12/44 (2021.01); B22F 12/49 (2021.01); B22F 12/90 (2021.01); B33Y 30/00 (2015.01); B33Y 50/02 (2015.01); G02B 27/32 (2006.01)
CPC G02B 27/32 (2013.01) [B22F 10/28 (2021.01); B22F 10/31 (2021.01); B22F 12/44 (2021.01); B22F 12/49 (2021.01); B22F 12/90 (2021.01); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 50/02 (2014.12)] 6 Claims
OG exemplary drawing
 
1. A system, comprising:
a calibration laser beam source to produce a laser calibration beam directed to a laser processing target
a laser processing beam source to produce a laser processing beam directed to the laser processing target
a laser scanner to create a scan of the laser processing beam across the laser processing target
a fiducial calibrator situated to receive the laser calibration beam and to produce at least one transient optical fiducial;
a camera to image a field of view on the laser processing target;
at least one processor to receive an image of the field of view from the camera; and
one or more computer-readable storage media including stored instructions that, responsive to execution by the at least one processor, adjust a positioning of the laser processing beam relative to the at least one transient optical fiducial.