US 12,240,055 B2
Optical zoom in additive manufacturing
Michael von Dadelszen, Merrimack, NH (US); Raghav Aggarwal, Somerville, MA (US); and Hongqing Sun, Belmont, MA (US)
Assigned to VulcanForms Inc., Burlington, MA (US)
Filed by VulcanForms Inc., Burlington, MA (US)
Filed on Jun. 24, 2021, as Appl. No. 17/356,911.
Claims priority of provisional application 63/049,353, filed on Jul. 8, 2020.
Prior Publication US 2022/0009030 A1, Jan. 13, 2022
Int. Cl. B23K 26/06 (2014.01); B22F 10/28 (2021.01); B22F 12/41 (2021.01); B22F 12/45 (2021.01); B23K 26/073 (2006.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01)
CPC B23K 26/0648 (2013.01) [B22F 10/28 (2021.01); B22F 12/41 (2021.01); B22F 12/45 (2021.01); B23K 26/0604 (2013.01); B23K 26/073 (2013.01); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12)] 30 Claims
OG exemplary drawing
 
1. An additive manufacturing system comprising:
a build surface;
a plurality of laser energy sources configured to produce a plurality of lasers to form a plurality of laser spots on the build surface;
a plurality of lens arrays configured to receive the plurality of lasers from the plurality of laser energy sources and comprising a first lens array and a second lens array, wherein the first lens array and the second lens array are each independently actuatable to change a spacing therebetween for adjustment of a size of each of the plurality of laser spots on the build surface; and
at least one lens, wherein the at least one lens is configured to adjust a spacing between the plurality of laser spots on the build surface.