Optical sensor, method and use of the sensor
US11733165B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2021 |
| Grant date | Aug 22, 2023 |
| Priority date | — |
| Expiry date | Nov 5, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/0625
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical sensor for determining the concentration of polycyclic aromatic hydrocarbons in a medium incudes a light source configured to emit transmitted light having a wavelength of less than 300 nm into the medium; a detector for receiving received light, wherein the detector is configured at least for receiving received light having a wavelength of 300 nm to 400 nm, wherein the transmitted light is converted into received light by means of fluorescence in the medium as a function of the concentration of polycyclic aromatic hydrocarbons, wherein a detector signal is generated from the received light; and a data processing unit configured to determine the concentration of polycyclic aromatic hydrocarbons using the detector signal, wherein the data processing unit controls the light source such that the light source emits modulated transmitted light according to a duty cycle. Methods of using the optical sensor are further disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.