A system for producing images directly on a surface includes an operational curing system comprised of a thermal acquisition system, a distance monitoring device, and a directed radiant energy source. The system also includes a support assembly for supporting the operational curing system relative to a substrate and a computer-based control system processing data and controlling the operational curing system and the support assembly.

An additive manufacturing apparatus includes a vat with multiple chambers and at least one of the chambers is a resin chamber configured to receive a radiant-energy-curable resin. A build surface is defined by the resin chamber within the vat, wherein at least a portion of the build surface is transparent. The additive manufacturing apparatus includes a stage that is positioned facing the vat and the build surface and the stage is configured to hold a stacked arrangement of one or more cured layers of the radiant-energy-curable resin.

An additive manufacturing apparatus includes a vat with multiple chambers and at least one of the chambers is a resin chamber configured to receive a radiant-energy-curable resin. A build surface is defined by the resin chamber within the vat, wherein at least a portion of the build surface is transparent. The additive manufacturing apparatus includes a stage that is positioned facing the vat and the build surface and the stage is configured to hold a stacked arrangement of one or more cured layers of the radiant-energy-curable resin.

A technique for shortening a shaping period while preventing occurrence of fume and sputtering at an AM apparatus is provided. According to one embodiment, a machine learning apparatus for machine learning of determination of a shaping condition at the AM apparatus is proposed. Such a machine learning apparatus acquires a state variable including a physical amount regarding shaping during and the shaping condition, learns a learning model for determining the shaping condition and determines the shaping condition on the basis of the state variable.

A three-dimensional printing system for fabricating a three-dimensional article includes a motorized build platform, a dispensing module, a pulsed light source, an imaging module, a movement mechanism, and a controller. The imaging module receives radiation from the pulsed light source and includes a two-dimensional mirror array. The movement mechanism imparts lateral motion between the imaging module and the build platform. The controller is configured to operate the motorized build platform and the dispensing module to form a layer of build material at a build plane, operate the movement mechanism to laterally scan the imaging module over the build plane, operate the pulsed light source to generate a sequence of radiation pulses that illuminate the mirror array, and operate the mirror array to selectively image the build material.

A three-dimensional printing system for fabricating a three-dimensional article includes a motorized build platform, a dispensing module, a pulsed light source, an imaging module, a movement mechanism, and a controller. The imaging module receives radiation from the pulsed light source and includes a two-dimensional mirror array. The movement mechanism imparts lateral motion between the imaging module and the build platform. The controller is configured to operate the motorized build platform and the dispensing module to form a layer of build material at a build plane, operate the movement mechanism to laterally scan the imaging module over the build plane, operate the pulsed light source to generate a sequence of radiation pulses that illuminate the mirror array, and operate the mirror array to selectively image the build material.

A light homogenization method for an LCD photocuring 3D printer, including: obtaining the initial grayscale value of a pixel in image data to be printed; obtaining a preset light homogenization compensation value, and calculating the difference between the preset light homogenization compensation value and the initial grayscale value, to obtain a target grayscale value; and controlling the LCD to perform, according to the target grayscale value, photocuring printing on the image data to be printed. The method can solve the problem of uneven exposure in photocuring 3D printing in the prior art, and improve the printing quality. A light homogenization apparatus for an LCD photocuring 3D printer, and a printer are correspondingly provided.

A light homogenization method for an LCD photocuring 3D printer, including: obtaining the initial grayscale value of a pixel in image data to be printed; obtaining a preset light homogenization compensation value, and calculating the difference between the preset light homogenization compensation value and the initial grayscale value, to obtain a target grayscale value; and controlling the LCD to perform, according to the target grayscale value, photocuring printing on the image data to be printed. The method can solve the problem of uneven exposure in photocuring 3D printing in the prior art, and improve the printing quality. A light homogenization apparatus for an LCD photocuring 3D printer, and a printer are correspondingly provided.

According to some aspects, techniques are provided for fabricating sinterable metallic parts through the application of directed energy to a build material. In particular, applying energy to a build material comprising a polymer mixed with a metal powder may cause the polymer to form a cohesive structure with the metal powder. As a result, the polymer acts as a “glue” to produce a metallic green part without local melting of the metal. The green part may subsequently be sintered to remove the polymer and produce a fully dense metal part. Optionally, a step of debinding may also be performed prior to, or simultaneously with, sintering.

There is provided a lighting system comprising a light source, and a cooling system with temperature sensing and responding capability coupled to the light source for maintaining a temperature of the light source within a defined variation from a set temperature. There are also provided a method of adjusting a temperature of a light source and a method of assembling the lighting system. There is further provided an additive manufacturing system for three-dimensional printing comprising the lighting system.