Optical elements in gas sensors
US10481080B2 · kind B2 · utility
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4References
21Claims
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Assignee
Inventors
Key dates
| Filing date | Jun 16, 2016 |
| Grant date | Nov 19, 2019 |
| Priority date | — |
| Expiry date | Jun 24, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/158
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gas sensing apparatus (48) comprises a gas sensor arranged to use light to sense presence of a gas; an optical element (12, 40) arranged so that said light impinges thereon; and a thermoelectric heat pump (2, 24) having a cold side (6, 36) and a hot side (8, 34). The thermoelectric heat pump (2, 24) is configured to transfer heat energy from said cold side (6, 36) to said hot side (8, 34) in response to a supply of electrical energy provided to the thermoelectric heat pump (2, 24). The hot side (8, 34) of the thermoelectric heat pump (2, 24) is in thermal contact with the optical element (12, 40).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.