	US 11,718,020 B2
	Platform, systems, and devices for 3D printing
Juan Francisco Llamazares Vegh, San Francisco, CA (US); Ignacio Hector Campanelli, San Francisco, CA (US); Gaston Oscar Corti, San Francisco, CA (US); and Emiliano Hoss, San Francisco, CA (US)
Assigned to STAMM VEGH CORPORATION, San Francisco, CA (US)
Appl. No. 17/759,433
Filed by Stamm Vegh Corporation, San Francisco, CA (US)
PCT Filed Feb. 2, 2021, PCT No. PCT/US2021/016187 § 371(c)(1), (2) Date Jul. 25, 2022, PCT Pub. No. WO2021/158529, PCT Pub. Date Aug. 12, 2021.
Claims priority of provisional application 63/010,405, filed on Apr. 15, 2020.
Claims priority of provisional application 62/969,434, filed on Feb. 3, 2020.
Prior Publication US 2023/0116685 A1, Apr. 13, 2023
Int. Cl. B29C 64/135 (2017.01); B29C 64/245 (2017.01); B29C 64/277 (2017.01); G06T 17/20 (2006.01); B29C 64/268 (2017.01); B29C 64/236 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01)

CPC B29C 64/135 (2017.08) [B29C 64/245 (2017.08); B29C 64/268 (2017.08); B29C 64/277 (2017.08); G06T 17/20 (2013.01); B29C 64/236 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12)]

49 Claims

1. A stereolithographic 3D printing device comprising:

a) a static optical assembly comprising:

i. a light engine configured to project a luxbeam comprising a plurality of pixels along a Z axis;

ii. at least one collimation lens configured to collimate the luxbeam;

iii. a microlens array (MLA) configured to focus the collimated luxbeam to a final beam of smaller diameter, wherein each pixel of the luxbeam is subdivided into a plurality of sub-pixels to multiply resolution of the final beam;

iv. a microdiaphragm array (MDA) configured to reduce noise and cross-talk between lenses of the MLA;

v. at least one projection lens; and

vi. a movable stage configured to translate one or more of the at least one projection lenses in a X-Y plane;

wherein the distances along the Z axis between the light engine, the collimation lens, the MLA, the at least one projection lens, and the movable stage of the static optical assembly are fixed;

b) a printing vat comprising a printing stage movable on the Z axis; and

c) control circuitry configured to control at least the light engine, the movable stage, and the printing stage to achieve stereolithographic 3D printing.