Asymmetric quadrature interferometry for thin film interference suppression in optical photothermal infrared spectroscopy
US12405215B2 · kind B2 · utility
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Key dates
| Filing date | Apr 14, 2023 |
| Grant date | Sep 2, 2025 |
| Priority date | — |
| Expiry date | Nov 15, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/3563
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Asymmetric interferometry is used with various embodiments of Optical Photothermal Infrared (OPTIR) systems to suppress thin film interference effects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.