Method for lithography-based generative production of three-dimensional components
US12358228B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2017 |
| Grant date | Jul 15, 2025 |
| Priority date | — |
| Expiry date | Sep 6, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/573
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In a method for lithography-based generative production of three-dimensional components, in which material that can be solidified under the effect of electromagnetic radiation is arranged in a vat, a build platform is positioned at a distance from the vat bottom, material located between the build platform and the vat bottom is irradiated at selected locations with the aid of an irradiating unit, the electromagnetic radiation is introduced into the material from below through a vat bottom that is transmissive to the radiation, at least in a certain region, and successively focused on focal points within the material, whereby a volume element of the material that is respectively located at the focal point is solidified. The solidification takes place by means of multiphoton absorption and the volume of the focal point is varied at least once during the method, and so the component is built up from solidified volume elements of different volumes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.