Patent ID: 11890805
Assignee: YOUNG OPTICS INC.
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 18:
19. A three-dimensional printing apparatus, comprising:
a container, configured to contain a liquid photosensitive material; and
a projecting structure, configured to provide a variety of molding beams including a first molding beam and a second molding beam for irradiating the liquid photosensitive material to form a plurality of solidified layers;
wherein the projecting structure comprises a light combiner module, disposed on the transmission paths of the first molding beam and the second molding beam;
wherein the light combiner module comprises a plurality of dichroic mirrors, an X-shaped light combiner element, or an internal total reflection prism;
wherein the first molding beam and the second molding beam have mutually different wavelengths, and the wavelengths of the first molding beam and the second molding beam are between 355 nm to 415 nm;
wherein a light valve is disposed downstream of the light combiner module;
wherein the light valve comprises a digital micro mirror device, a liquid-crystal-on-silicon panel, or a transmissive liquid crystal panel.