Gas lens filter systems and methods
US12105020B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2021 |
| Grant date | Oct 1, 2024 |
| Priority date | — |
| Expiry date | Jan 8, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2201/0686
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided are systems and methods to filter infrared spectrum radiation that can be integrated with a compact optical system for an infrared imaging system. The optical system includes an objective lens element configured to receive and transmit infrared (IR) radiation from a scene, where the IR radiation from the scene includes a particular range of wavelengths corresponding to an absorption spectrum or a transmission spectrum of a gas. The optical system also includes a spectral lens element configured to receive the IR radiation transmitted through the objective lens element, where the spectral lens element comprises a first interference filter disposed on a first surface of the spectral lens element. The interference filter is configured to filter the IR radiation transmitted through the objective lens element to a narrower wavelength band that includes the particular range of wavelengths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.