Detection of 3D printing failure using imaging
US10809205B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 2019 |
| Grant date | Oct 20, 2020 |
| Priority date | — |
| Expiry date | Jul 5, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10048
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatuses and methods for detecting failures in a photoreactive 3D printing system include a light-emitting device configured to emit light into and along a plane of a membrane or of a substrate below the membrane. The membrane is a bottom surface of a resin tub. The light has a wavelength that is different from a photopolymerization wavelength of resin in the resin tub. The membrane or substrate is transparent to the wavelength of the light and to the photopolymerization wavelength. An imaging device is oriented to capture an image of the light emitted from the membrane or the substrate. A detection system is in communication with the imaging device, the detection system being configured to detect a spatial or temporal disruption in the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.