Photoacoustic detector with background signal correction
US8661874B2 · kind B2 · utility
4Cited by
10References
17Claims
0Family size
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Key dates
| Filing date | Apr 28, 2011 |
| Grant date | Mar 4, 2014 |
| Priority date | — |
| Expiry date | Feb 2, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/1704
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A photoacoustic detector includes a sensing region for receiving atmospheric samples. Radiant energy from a source is directed toward the sensing region. A thermal isolator and a displaced optical filter are positioned between the incoming radiant energy and the sensing region so that the radiant energy passes, at least in part, through both elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.