Gain normalization
US10018504B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 12, 2015 |
| Grant date | Jul 10, 2018 |
| Priority date | — |
| Expiry date | Aug 29, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2005/106
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of normalizing FPA system gain for varying temperature includes determining an FPA temperature and calculating an FPA system gain as a function of the FPA temperature, system gain for the FPA at a reference temperature, and empirically derived coefficients. The method also includes applying the FPA system gain at the FPA temperature to condition output of the FPA to produce temperature independent image data. An imaging system includes a focal plane array (FPA). A temperature sensor is operatively connected to measure temperature of the FPA. A module is operatively connected to the FPA and temperature sensor to calculate FPA system gain for the FPA as described above, and to apply the FPA system gain to condition output of the FPA to produce temperature independent image data. There need be no temperature control device, such as a thermoelectric cooling device, connected for temperature control of the FPA.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.