Sensing device with sol-gel derived film on the light source
US6241948A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 1998 |
| Grant date | Jun 5, 2001 |
| Priority date | — |
| Expiry date | May 20, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/062
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A sensing system for quantifying a gaseous species or an analyte in a sample in accordance with one embodiment of the present invention includes a light emitting diode and a detector. The light emitting diode is coupled to a power source and at least a portion of the light emitting diode is coated with a sol-gel-derived film doped with a doping material. The detector is spaced from and substantially across from the portion of the light emitting diode coated with the sol-gel-derived film. The system may include a filter which is located between the light emitting diode and the detector and a processing system which is coupled to the detector for quantifying the amount of a gaseous species or an analyte in a sample based on data from the detector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.