US 12,030,250 B2
Phase change light valve system
Francis L. Leard, Sudbury, MA (US); James A. DeMuth, Woburn, MA (US); Andrew J. Bayramian, Marblehead, MA (US); and Matthew Murachver, Long Beach, CA (US)
Assigned to Seurat Technologies, Inc., Wilmington, MA (US)
Filed by Seurat Technologies, Inc., Wilmington, MA (US)
Filed on Oct. 28, 2021, as Appl. No. 17/513,005.
Claims priority of provisional application 63/107,077, filed on Oct. 29, 2020.
Prior Publication US 2022/0134659 A1, May 5, 2022
Int. Cl. B29C 64/268 (2017.01); B29C 65/16 (2006.01); B33Y 30/00 (2015.01); B33Y 70/00 (2020.01); B29K 105/00 (2006.01)
CPC B29C 64/268 (2017.08) [B29C 65/16 (2013.01); B33Y 30/00 (2014.12); B33Y 70/00 (2014.12); B29K 2105/251 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An additive manufacturing system, comprising:
a laser to form a laser beam at a first wavelength;
a 2D patternable light valve including a phase change material that changes phase responsive to being illuminated by a write beam at a second wavelength that is different from the first wavelength, and which does not change phase when illuminated by the laser beam at the first wavelength,
wherein the write beam is a patterned beam that changes the phase of one or more portions of the phase change material to impose a pattern in the phase change material, and the laser beam of the first wavelength interacting with the phase change material generates a two-dimensionally patterned beam for modifying a material that is used to form a structure.