Patent ID: 11858199
Assignee: NEXA3D INC.
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 11:
12. A method, comprising:
projecting, via a digital light processing (DLP) light source, light towards an opening in a tank containing photo-curable liquid resin;
filtering, by a liquid crystal display (LCD) mask, the light from the DLP light source, the mask having pixels configurable to be individually transparent or opaque to portions of the light projected from the DLP light source; and
in a build area of the tank, curing the photo-curable liquid resin with the filtered light from the DLP light source so as to form a layer of a partially formed object,
wherein the light is projected from the DLP light source with varying intensity such that portions of the light with high intensity are transmitted through one or more respective transparent pixel regions of the mask and onto opaque pixels at perimeters of the one or more transparent pixel regions of the mask and portions of the light with low intensity are blocked by respective opaque pixels of the mask.