US 11,747,193 B2
Laser fabrication with beam detection
Daniel Shapiro, Mercer Island, WA (US); Mark Gosselin, Seattle, WA (US); Eva Kloiber, Seattle, WA (US); Jared Kofron, Vashon, WA (US); and Matthew Sarnoff, Seattle, WA (US)
Assigned to Glowforge Inc., Seattle, WA (US)
Filed by Glowforge Inc., Seattle, WA (US)
Filed on Feb. 28, 2022, as Appl. No. 17/682,942.
Application 17/682,942 is a continuation of application No. 16/814,820, filed on Mar. 10, 2020, granted, now 11,262,236.
Claims priority of provisional application 62/833,540, filed on Apr. 12, 2019.
Prior Publication US 2022/0291039 A1, Sep. 15, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G01J 1/42 (2006.01); G01J 5/10 (2006.01)
CPC G01J 1/4257 (2013.01) [G01J 5/10 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A computer-numerically-controlled (CNC) machine comprising:
at least one processor;
at least one non-transitory computer-readable medium; and
program instructions stored on the at least one non-transitory computer-readable medium that are executable by the at least one processor such that the CNC machine is configured to:
measure a power of a beam of electromagnetic energy at a location between a source of the electromagnetic energy and a destination in the CNC machine, the beam of electromagnetic energy traveling from the source to the destination being susceptible to one or more interferences, and the one or more interferences being capable of altering the power of the beam of electromagnetic energy by at least diverting, away from an intended path for the beam of electromagnetic energy, at least a portion of the beam of electromagnetic energy;
detect, based at least on the measured power of the beam of electromagnetic energy being less than a threshold value, an interference of the beam of electromagnetic energy; and
in response to detecting the interference of the beam of electromagnetic energy, perform one or more actions.