Refractive relay spectrometer
US7061611B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 31, 2003 |
| Grant date | Jun 13, 2006 |
| Priority date | — |
| Expiry date | Nov 22, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A compact spectrometer that is relatively free of spatial and spectral image distortions. The spectrometer includes one or more slit elements located at an object plane, a first optical sub-system having at least one refractive optical element, one or more dispersive elements located substantially at a center plane, a second optical sub-system having at least one refractive optical element, and one or more one detecting elements located at substantially an image plane. The first optical sub-system is capable of substantially collimating, at the center plane, electromagnetic radiation originating from the one or more slit elements. The second optical sub-system is, in one embodiment, substantially symmetric to said first optical sub-system, the center plane being the plane of symmetry. The second optical sub-system is capable of imaging the substantially collimated electromagnetic radiation from the center plane onto the image plane. Another embodiment has a reflective dispersive element, and the first optical sub-system is also the second optical sub-system, acting as a dual optical sub-system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.