Structured light generation for intraoral 3D camera using 1D MEMS scanning
US10463243B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2017 |
| Grant date | Nov 5, 2019 |
| Priority date | — |
| Expiry date | Jul 27, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2213/001
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for intraoral imaging has an intraoral camera that defines a field of view with a first dimension and a second dimension orthogonal to the first dimension. A projector has a laser diode energizable to emit a light beam; a collimator in the path of the emitted light beam; first beam-shaping optics disposed to shape the collimated light beam in the second dimension to form a linear light pattern; focusing optics disposed to focus the shaped collimated beam at a focal plane; and a scanner that is disposed substantially at the focal plane and that is energizable to scan the formed linear light pattern along the second dimension to successive positions of the field of view. A control logic processor coordinates energizing the laser diode and scanner with image capture by the intraoral camera.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.