Intra-oral scanner for digital impression and real-time reconstruction system for inner surface topographic image of oral cavity
US9149348B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2013 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | May 28, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B1/0684
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present invention relates to medical devices and provides an intra-oral scanner for a digital impression. The intra-oral scanner has a window for limiting an acquisition range. The intra-oral scanner sequentially includes, along a light path, a three-color LED light source module, a microlens array sheet, a collimator lens group, a gray coding grating plate, an optical deflector, a projection lens group, a first reflector, a second reflector and a third reflector positioned in parallel with each other with their reflective surfaces opposing to each other, and a camera. The intra-oral scanner can perform a scan directly in the human oral cavity and obtain the digital impression of three-dimensional topography of the tooth and soft tissue in real-time, thereby meeting the requirements of dentists and dental technicians to quickly and accurately obtain the oral impressions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.