Method and apparatus for detecting an amorphous and/or crystalline structure of phosphate and/or sulphate salts on the surface of a substrate or within a substrate
US12345634B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2021 |
| Grant date | Jul 1, 2025 |
| Priority date | — |
| Expiry date | Aug 10, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/0221
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for detecting amorphous and/or crystalline structures of phosphate and/or sulphate salts on or within a substrate involves providing an LWIR imaging system with an infrared light emitting source (A) configured to emit infrared light over the range of 8 to 14 micrometers, an LWIR detecting device (B) configured to detect the intensity of electromagnetic radiation scattered, emitted, and/or reflected by the substrate, and control circuitry for the LWIR detecting device. The method further comprises providing the substrate, irradiating it with the infrared light emitting source, acquiring a stream of temporally consecutive images using the LWIR detecting device, and selecting, based on processing the acquired stream of images with the control circuitry, at least one focused image where the amorphous and/or crystalline structures of phosphate and/or sulphate salts are substantially in focus of the LWIR detecting device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.