The present invention relates to a method and device for layer-wise instruction of a shaped body by stereolithography in subsequent layers.

An example apparatus to produce a three-dimensional object comprises a controller, a build area configured to receive a layer of particulate material, a printhead, and an ultraviolet light emitting diode energy source. The controller is to cause the printhead to deposit a liquid which absorbs ultraviolet radiation onto the layer of particulate material. The controller is further to cause the ultraviolet light emitting diode energy source to irradiate the liquid, after the liquid has been deposited onto the layer of particulate material, thereby to heat the liquid and cause a portion of the particulate material to solidify.

The disclosure relates to processing machines and methods for producing three-dimensional components by irradiating powder with a processing beam, the machines including a container with a moveable support for the powder, as well as an irradiating device with a scanner device for aligning the processing beam on a processing field at an opening of the container. The irradiating device includes a heating device that includes a heating radiation source for generating a heating beam for heating the powder from above and including a beam shaping optical unit configured to convert a first beam profile of the heating beam into a second beam profile, e.g., a ring-shaped beam profile, of the heating beam.

The disclosure relates to processing machines and methods for producing three-dimensional components by irradiating powder with a processing beam, the machines including a container with a moveable support for the powder, as well as an irradiating device with a scanner device for aligning the processing beam on a processing field at an opening of the container. The irradiating device includes a heating device that includes a heating radiation source for generating a heating beam for heating the powder from above and including a beam shaping optical unit configured to convert a first beam profile of the heating beam into a second beam profile, e.g., a ring-shaped beam profile, of the heating beam.

An imaging system for a three-dimensional printer includes a light source component, at least one pattern determining element, a light splitter, a light directing component, and a lens component. The light source component emits a first light and a second light having different wavelengths. The pattern determining element provides the first light and the second light with a first pattern and a second pattern respectively. The light splitter directs the first light and the second light to different directions respectively. The light directing component guides at least one of the first light and the second light, such that the first light and the second light go to a first plane and a second plane respectively. The lens component includes a first lens group and a second lens group, configured to image the first pattern and the second pattern onto the first plane and the second plane respectively.

An imaging system for a three-dimensional printer includes a light source component, at least one pattern determining element, a light splitter, a light directing component, and a lens component. The light source component emits a first light and a second light having different wavelengths. The pattern determining element provides the first light and the second light with a first pattern and a second pattern respectively. The light splitter directs the first light and the second light to different directions respectively. The light directing component guides at least one of the first light and the second light, such that the first light and the second light go to a first plane and a second plane respectively. The lens component includes a first lens group and a second lens group, configured to image the first pattern and the second pattern onto the first plane and the second plane respectively.

The present invention relates to a device for laser-based generative component production. The device comprises a processing head (1), using which a plurality of mutually separate laser beams are directed adjacently and/or overlapping to some extent onto the processing plane, The processing head (1) is moved across the processing plane using a movement apparatus (9), while the mutually separate laser beams are modulated independently of one another in terms of intensity, in order to obtain the desired exposure geometry. The laser power and the dimensional size can be scaled cost effectively during the generative production using the suggested device and the associated method.

In one example, a lighting device for an additive manufacturing machine includes first light sources each to emit monochromatic light within a first band of wavelengths that includes a peak light absorption of a liquid coalescing agent and second light sources each to emit monochromatic light within a second band of wavelengths different from the first band of wavelengths. Each of the first light sources or each of multiple groups of the first light sources is individually addressable to emit monochromatic light independent of any other of the first light sources or of any other group of the first light sources and each of the second light sources or each of multiple groups of the second light sources is individually addressable to emit monochromatic light independent of any other of the second light sources or of any other group of the second light sources.

In one example, a lighting device for an additive manufacturing machine includes first light sources each to emit monochromatic light within a first band of wavelengths that includes a peak light absorption of a liquid coalescing agent and second light sources each to emit monochromatic light within a second band of wavelengths different from the first band of wavelengths. Each of the first light sources or each of multiple groups of the first light sources is individually addressable to emit monochromatic light independent of any other of the first light sources or of any other group of the first light sources and each of the second light sources or each of multiple groups of the second light sources is individually addressable to emit monochromatic light independent of any other of the second light sources or of any other group of the second light sources.

An apparatus for producing a three-dimensional object using a resin or other flowable material in a layer-by-layer technique uses a roller or other applicator to carry a layer of the flowable material to an application site, an exposure device to emit electromagnetic waves to apply the layer to the object to build the object, and optionally further including an initial exposure with emitted electromagnetic waves to at least partially solidify the layer of the flowable material prior to the roller carrying the layer to the application site.