US 11,906,752 B2
Optical element arrangements for varying beam parameter product in laser delivery systems
Wang-Long Zhou, Andover, MA (US); Parviz Tayebati, Sherborn, MA (US); Bien Chann, Merrimack, NH (US); and Francisco Villarreal-Saucedo, Middleton, MA (US)
Assigned to Panasonic Connect North America, Division of Panasonic Corporation of North America, Newark, NJ (US)
Filed by Wang-Long Zhou, Andover, MA (US); Parviz Tayebati, Sherborn, MA (US); Bien Chann, Merrimack, NH (US); and Francisco Villarreal-Saucedo, Middleton, MA (US)
Filed on Mar. 1, 2022, as Appl. No. 17/683,542.
Application 17/683,542 is a continuation of application No. 16/515,124, filed on Jul. 18, 2019, granted, now 11,294,191.
Application 16/515,124 is a continuation of application No. 15/188,076, filed on Jun. 21, 2016, granted, now 10,401,633, issued on Sep. 3, 2019.
Claims priority of provisional application 62/183,210, filed on Jun. 23, 2015.
Prior Publication US 2022/0187611 A1, Jun. 16, 2022
Int. Cl. G02B 27/09 (2006.01); G02B 7/00 (2021.01); G02B 27/10 (2006.01); G02B 27/30 (2006.01); G02B 19/00 (2006.01); B23K 26/064 (2014.01)
CPC G02B 27/0927 (2013.01) [G02B 7/005 (2013.01); G02B 27/1086 (2013.01); B23K 26/064 (2015.10); G02B 19/0057 (2013.01); G02B 27/0944 (2013.01); G02B 27/0961 (2013.01); G02B 27/30 (2013.01)] 52 Claims
OG exemplary drawing
 
1. A laser delivery system for receiving and altering a spatial power distribution of a radiation beam from a beam source and focusing the radiation with the altered spatial power distribution onto a workpiece, the system comprising:
a triplet collimator for increasing a divergence of the radiation beam;
disposed optically downstream of the triplet collimator, a focusing lens for receiving the radiation beam and focusing the beam toward the workpiece;
disposed optically upstream of the focusing lens, at least one optical element for receiving the radiation beam and altering the spatial power distribution thereof;
a lens manipulation system for changing a position of the at least one optical element within a path of the radiation beam; and
a controller for controlling the lens manipulation system to achieve a target altered spatial power distribution on the workpiece,
wherein the triplet collimator comprises (i) a first plano-concave lens, (ii) a second meniscus lens, and (iii) a third plano-convex lens.