US 12,390,998 B2
Scanned DLP with pixel drift
Andrew Goldman, Stow, MA (US); and Robert Morgan, Arlington, MA (US)
Assigned to Formlabs Inc., Somerville, MA (US)
Filed by Formlabs Inc., Somerville, MA (US)
Filed on Oct. 25, 2022, as Appl. No. 18/049,432.
Claims priority of provisional application 63/263,042, filed on Oct. 26, 2021.
Prior Publication US 2023/0138135 A1, May 4, 2023
Int. Cl. B29C 64/124 (2017.01); B29C 64/291 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01)
CPC B29C 64/291 (2017.08) [B29C 64/124 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12)] 20 Claims
OG exemplary drawing
 
1. A curing system for an additive fabrication system, the curing system comprising:
a basin configured to receive a photopolymer resin;
an ultraviolet light source configured to selectively emit ultraviolet light, the ultraviolet light defining a pixelated array illuminating at least a portion of the photopolymer resin, the pixelated array including a first array axis and a second array axis oriented perpendicular to the first array axis; and
a translating device configured to translate the pixelated array along a translation axis at an oblique angle greater than five degrees relative to the first array axis, the translating device configured to translate the pixelated array according to a program including the operations of:
maintaining the pixelated array at a first position along the translation axis for at least a first threshold period of time;
maintaining the pixelated array at a second position spaced from the first position along the translation axis for at least a second threshold period of time; and
translating the pixelated array along the translation axis between the first position and the second position at a translation rate.