US 11,892,621 B2
Trajectory and control optimizations for reduced power
Carl B. Candiloro, Hudson, MA (US); and Arkady Savikovsky, Burlington, MA (US)
Assigned to FARO Technologies, Inc., Lake Mary, FL (US)
Filed by FARO Technologies, Inc., Lake Mary, FL (US)
Filed on Oct. 14, 2020, as Appl. No. 17/070,041.
Claims priority of provisional application 62/925,257, filed on Oct. 24, 2019.
Prior Publication US 2021/0124166 A1, Apr. 29, 2021
Int. Cl. G02B 26/10 (2006.01); H01S 3/00 (2006.01)
CPC G02B 26/105 (2013.01) [H01S 3/0014 (2013.01); H01S 3/0071 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A laser projection device configured to perform trajectory optimization, the device comprising:
a power source configured to supply power to a power amplifier;
a laser source operably coupled to the power source and configured to emit a laser beam;
a trajectory control module configured to calculate one or more parameters for a projection trajectory of the laser beam;
a beam steering unit arranged to receive the laser beam from the laser source and configured to control along the projection trajectory a direction of the laser beam towards the surface of an object;
wherein the power amplifier is operably coupled to the beam steering unit, wherein the output of the power amplifier is based at least in part on the calculated one or more parameters;
wherein the one or more parameters comprise a refresh rate for the laser beam based on a flicker-free threshold for a particular wavelength; and
wherein the beam steering unit comprising a first galvanometer coupled to a mirror and a second galvanometer coupled to a second mirror, the power amplifier controlling an effective voltage to the first galvanometer and second galvanometer, wherein the first galvanometer controls the projection of the laser beam in a first direction and the second galvanometer controls the projection of the laser beam in a second direction.