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US 7,892,474 B2Granted
Continuous generative process for producing a three-dimensional object
AssigneeEnvisiontec GmbH
InventorsAlexandr Shkolnik, Ali El-Siblani, Hendrik John
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AssigneeEnvisiontec GmbH
InventorsAlexandr Shkolnik, Ali El-Siblani, Hendrik John
Estimating the term…
The invention describes a process and a device for producing at least one three-dimensional object, a photo-polymerizable material is solidified by means of simultaneous or almost simultaneous exposure of a build area or partial build area in a building plane via electromagnetic radiation, wherein a distance between a support plate, at which the object to be generated is built, and the building plane is changed during at least one exposure phase. It is possible according to the invention to solidify the three-dimensional object in a main direction during a radiation phase exceeding a current prescribed hardening depth, without interrupting supply of electromagnetic energy during the irradiation phase. Further, it is possible to control a current hardening depth of the photopolymerizable material during a building phase. Embodiments of suitable devices are also described.
A process for producing at least one three-dimensional object, comprising the step of solidifying a photo-polymerizable material by means of mask exposure of a build area or partial build area in a building plane via electromagnetic radiation from a digital light processing/digital micromirror device projection system, wherein a distance between a support plate, at which the object to be generated is built, and the building plane is changed during at least one exposure phase, and wherein the process comprises at least one phase during which the supply of electromagnetic radiation to the building plane is interrupted while the distance between the support plate and the building plane is further changed.
A process for producing at least one three-dimensional object through solidifying a photopolymerizable material by means of mask exposure in a building plane via electromagnetic radiation from a digital light processing/digital micromirror device projection system, wherein the three-dimensional object is solidified in a main building direction during an irradiation period to an amount exceeding a prescribed current hardening depth, without interrupting supply of electromagnetic energy during the irradiation period.
A process for producing at least one three-dimensional object comprising a step of solidifying a photopolymerizable material by means of mask exposure in a building plane via electromagnetic radiation from a digital light processing/digital micromirror device projection system, wherein a current hardening depth of the photopolymerizable material during a building period is controlled by a speed of the support plate supporting the object to be generated moving away from the building plane.
A process for producing at least one three-dimensional object comprising the step of solidifying a photopolymerizable material by means of mask exposure in a building plane via electromagnetic radiation from a digital light processing/digital micromirror device projection system, wherein a current curing depth of the photopolymerizable material during a continuous building period is controlled by an irradiation intensity of each individual pixel of a projected rasterized image mask and by the control of speed of the support plate supporting the object to be generated moving away from the building plane.
A process for producing a three-dimensional object, comprising:
Dependencies are inferred from the claim text.