Dental curing light and method
US11589971B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2018 |
| Grant date | Feb 28, 2023 |
| Priority date | — |
| Expiry date | Apr 25, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T7/55
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The specification discloses a dental curing light including 1) a light engine, 2) a coaxially aligned, camera-based viewing system, and 3) a control system providing a variety of safety features and simplified, operator-friendly operation. The camera's field of view (FOV) is coaxial with the centerline of the curing beam of the light engine. The curing light includes a multi-planar dichroic mirror (MDM) providing viewing and light beam direction aligned with the target. The MDM provide multiple images to the camera from different angles. The camera provides real-time measurement of light intensity reflected back from the targeted surface. Using the multiple image portions reflected by the multi-planar dichroic mirror, the control system computes the distance between the curing light and the target. The reflected intensity and the calculated distance enable the control system to compute a light engine irradiance to achieve a desired irradiance at the targeted surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.