US 11,806,932 B2
Large array stereolithography with efficient optical path
Robert W. Beauchamp, Carlsbad, CA (US); Ning Zheng, Charlotte, NC (US); and James Francis Smith, III, Tega Cay, SC (US)
Assigned to 3D SYSTEMS, INC., Rock Hill, SC (US)
Filed by 3D Systems, Inc., Rock Hill, SC (US)
Filed on Apr. 28, 2022, as Appl. No. 17/731,468.
Application 17/731,468 is a continuation of application No. 16/837,699, filed on Apr. 1, 2020, granted, now 11,345,089.
Claims priority of provisional application 62/833,055, filed on Apr. 12, 2019.
Prior Publication US 2022/0250320 A1, Aug. 11, 2022
Int. Cl. B33Y 30/00 (2015.01); B29C 45/00 (2006.01); B29C 59/00 (2006.01); B29C 63/02 (2006.01); B29C 69/00 (2006.01); B29C 64/277 (2017.01); B33Y 70/00 (2020.01); B29C 64/286 (2017.01); B33Y 50/02 (2015.01); B29C 64/393 (2017.01)
CPC B29C 64/277 (2017.08) [B29C 45/00 (2013.01); B29C 59/00 (2013.01); B29C 63/02 (2013.01); B29C 64/286 (2017.08); B29C 69/007 (2013.01); B33Y 30/00 (2014.12); B33Y 70/00 (2014.12); B29C 64/393 (2017.08); B33Y 50/02 (2014.12)] 20 Claims
OG exemplary drawing
 
1. A method of manufacturing and configuring an imaging system including an imaging bar configured to image a build plane in a three-dimensional printing system comprising:
providing a substrate with an array of light emitting devices;
fabricating a polymer material collimation layer having an array of collimators corresponding to the array of light emitting devices, the array of collimators including an array of openings that extend through the polymer material and have reflective inside surfaces; and
overlay the polymer material collimation layer onto the substrate with the array of collimators aligning to the array of light emitting devices, the array of collimators is configured to reflect and redirect light from the array of light emitting devices.