Reference switch architectures for noncontact sensing of substances
US12085500B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 2023 |
| Grant date | Sep 10, 2024 |
| Priority date | — |
| Expiry date | Feb 20, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/12723
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This relates to systems and methods for measuring a concentration and type of substance in a sample at a sampling interface. The systems can include a light source, optics, one or more modulators, a reference, a detector, and a controller. The systems and methods disclosed can be capable of accounting for drift originating from the light source, one or more optics, and the detector by sharing one or more components between different measurement light paths. Additionally, the systems can be capable of differentiating between different types of drift and eliminating erroneous measurements due to stray light with the placement of one or more modulators between the light source and the sample or reference. Furthermore, the systems can be capable of detecting the substance along various locations and depths within the sample by mapping a detector pixel and a microoptics to the location and depth in the sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.