Coded aperture spectral imaging device
US11079273B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2018 |
| Grant date | Aug 3, 2021 |
| Priority date | — |
| Expiry date | Jul 23, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/2823
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An imaging spectrometer (100) is provided, comprising: an entrance opening (101) configured to admit light to the spectrometer (100), a coded aperture (120), at least one dispersive element (111, 112), a two-dimensional array detector (130), and a plurality of converging optical elements (121, 122, 123, 124). The plurality of converging optical elements (121, 122, 123, 124) are configured to focus light from the entrance opening (101) at the coded aperture (120), and to focus light from the coded aperture (120) at the detector (130). The coded aperture (120) is arranged to modulate light from the entrance opening (101) in at least one of the spatial and spectral domain. The at least one dispersive element (111, 112) comprises a dispersive element (111, 112) between the coded aperture (120) and the detector (130). The at least one converging optical element (121, 122, 123, 124) comprises at least one concave reflector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.