Linearized variable-dispersion spectrometers and related assemblies
US9304038B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 2014 |
| Grant date | Apr 5, 2016 |
| Priority date | — |
| Expiry date | Jul 3, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2003/1208
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Wavenumber linear spectrometers are provided including an input configured to receive electromagnetic radiation from an external source; collimating optics configured to collimate the received electromagnetic radiation; a dispersive assembly including first and second diffractive gratings, wherein the first diffraction grating is configured in a first dispersive stage to receive the collimated electromagnetic radiation and wherein the dispersive assembly includes at least two dispersive stages configured to disperse the collimated input; and an imaging lens assembly configured to image the electromagnetic radiation dispersed by the at least two dispersive stages onto a linear detection array such that the variation in frequency spacing along the linear detection array is no greater than about 10%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.