Auto-focussing LIBS system
US11781990B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2020 |
| Grant date | Oct 10, 2023 |
| Priority date | — |
| Expiry date | Oct 25, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/068
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A LIBS analysis system comprises a focusing lens arrangement having a focal plane; a laser for propagating a laser beam through the focusing lens arrangement to be focused at the focal plane; a detector for generating an output that is proportional to an intensity of incident electromagnetic radiation that is incident on the detector; a translation mechanism configured to cause a relative movement of the sample holder and the focusing lens arrangement to vary a position of the focal plane along the optical path with respect to the sample holder; and a controller configured to automatically control the translation mechanism to cause the relative movement of the sample holder and the focusing lens arrangement to achieve an optimum position at which the focal plane and an analysis region of the upper surface intersecting the optical path are at or are close to coincidence.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.