Optical sensor element, optical pH sensor and method for monitoring the function of an optical pH sensor
US12209968B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 21, 2021 |
| Grant date | Jan 28, 2025 |
| Priority date | — |
| Expiry date | Sep 1, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/7786
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present disclosure relates to an optochemical sensor element comprising: a substrate layer having a first substrate side facing toward a measurement medium and an opposite second substrate side; a functional layer, on the first substrate side and having a first reference dye, an indicator dye, and a second reference dye, wherein the first reference dye comprises an inorganic material, is insensitive to pH, and is suitable to emit a first luminescence signal upon stimulation, wherein the indicator dye comprises an organic material and is sensitive to pH, and is suitable to emit a third luminescence signal upon stimulation, wherein the second reference dye comprises an organic material, is insensitive to pH, and has a passivated functional group, and is suitable to emit a second luminescence signal upon stimulation, wherein the substrate layer is transparent to the stimulation signal and the luminescence signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.