Super-miniaturized NDIR gas sensor
US8097856B2 · kind B2 · utility
2Cited by
10References
6Claims
0Family size
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Key dates
| Filing date | May 3, 2011 |
| Grant date | Jan 17, 2012 |
| Priority date | — |
| Expiry date | May 3, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/0662
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Two detector elements are optically isolated by having them mounted (die-attached) on the same header so that the thermal tracking of the detectors respectively for the signal and reference channels is close to ideal. Furthermore, such an optical isolation technique or cross-interference suppression between the two detector elements mounted on the same header also allows the use of only one and the same narrow band pass interference filter covering both detectors. Thus the thermal tracking of the filters respectively for the signal and reference channels is also close to perfection as both channels share the same filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.