US 11,749,958 B2
Fixing device for line laser output
Xiao Wu, Beijing (CN); Youshuang Ding, Beijing (CN); and Tianlan Shao, Beijing (CN)
Assigned to MECH-MIND ROBOTICS TECHNOLOGIES LTD., Beijing (CN)
Appl. No. 18/43,046
Filed by MECH-MIND ROBOTICS TECHNOLOGIES LTD., Beijing (CN)
PCT Filed Sep. 15, 2020, PCT No. PCT/CN2020/115311
§ 371(c)(1), (2) Date Feb. 27, 2023,
PCT Pub. No. WO2022/041338, PCT Pub. Date Mar. 3, 2022.
Claims priority of application No. 202010893209.0 (CN), filed on Aug. 31, 2020.
Prior Publication US 2023/0246410 A1, Aug. 3, 2023
Int. Cl. H01S 5/02253 (2021.01); H01S 5/02326 (2021.01); G02B 7/02 (2021.01); G02B 7/18 (2021.01); G02B 27/09 (2006.01)
CPC H01S 5/02253 (2021.01) [G02B 7/022 (2013.01); G02B 7/1805 (2013.01); G02B 27/0972 (2013.01); H01S 5/02326 (2021.01)] 11 Claims
OG exemplary drawing
 
1. A fixing device for line laser output, comprising a laser beam expander, the laser beam expander having:
a laser via hole defined in an axial direction thereof, the laser via hole being configured to allow a laser beam to pass therethrough;
an emitter embedding groove disposed at a laser entry end of the laser via hole, a laser emitter is to be embedded in the emitter embedding groove, the emitter embedding groove having a peripheral wall coaxial with a peripheral wall of the laser via hole, and a bottom wall perpendicular to the peripheral wall of the laser via hole, to enable an output port of the laser emitter to be aligned with the laser via hole to allow the laser beam to enter the laser via hole along an axis of the laser via hole; and
a Powell lens embedding groove disposed at a laser exit end of the laser via hole, the Powell lens embedding groove having a peripheral wall coaxial with the peripheral wall of the laser via hole, and a bottom wall perpendicular to the peripheral wall of the laser via hole, to enable an axis of a Powell lens to coincide with the axis of the laser via hole when a non-cylindrical portion of the Powell lens is embedded into the Powell lens embedding groove,
wherein the laser beam expander comprises a prism fixing sleeve, wherein:
the prism fixing sleeve has an end sleeved over the laser exit end of the laser via hole, and the Powell lens embedding groove is disposed on a surface of another end of the prism fixing sleeve, to enable rotation of the prism fixing sleeve in a circumferential direction relative to the laser exit end of the laser via hole;
the prism fixing sleeve has two waist-shaped holes symmetrically formed in the circumferential direction on a circumference of a peripheral wall of the end sleeved over the laser exit end of the laser via hole;
at least three circular holes are evenly formed in the circumferential direction on a circumference of a peripheral wall of the laser exit end of the laser via hole that is in a same radial section as the circumference of the peripheral wall of the end sleeved over the laser exit end of the laser via hole;
each of the two waist-shaped holes has a circumferential length greater than or equal to a numerical value corresponding to two of the at least three circular holes; and
the two waist-shaped holes cooperate with the at least three circular holes to achieve fastening of the prism fixing sleeve after the prism fixing sleeve rotates to any angle in the circumferential direction relative to the laser exit end of the laser via hole.