Techniques for optical control calibration in additive fabrication and related systems and methods
US12011881B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2021 |
| Grant date | Jun 18, 2024 |
| Priority date | — |
| Expiry date | Jul 3, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/25
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Techniques are described for calibrating an optical system in an additive fabrication device using an image of the build surface within the device. These techniques allow calibration to be performed by imaging one or more calibration features generated on (or at) the build surface, which may include illuminated regions of the build surface, regions of the build surface on which solid material has been formed, and/or regions of the build surface to which energy has otherwise been directed thereby making those regions distinguishable from their surroundings. The calibration features may be produced (at least in part) by the optical system to be calibrated. The location of the calibration features within the image may be compared with the intended location of these calibration features, and corrections to the optical system determined based on any differences between the actual and intended locations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.