Method and apparatus for isotropic stereolithographic 3D printing with a variable speed and power hybrid light source
US12122090B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 22, 2021 |
| Grant date | Oct 22, 2024 |
| Priority date | — |
| Expiry date | Jul 24, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB33Y50/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for 3D printing of the bottom-up photo-curing type, including a first source of photo-curing radiation, of the DLP type, having a predetermined wavelength, and a second source of photo-curing radiation, of the laser type, having a wavelength equal to that of the first source, the second source using laser deflection and a polarisation coupling optic, the first source having linear polarisation oriented according to a predetermined angle, and the second source having linear polarisation oriented according to an angle orthogonal to that of the first source; the second source having variable irradiating flux power and the laser deflection having variable speed, the irradiating flux power and speed of the laser deflection controlled by predictive software as a function of the time required for photo-curing of each layer by the first source. Embodiments also relate to a method of 3D printing of the bottom-up photo-curing type using the apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.