Interferometer for Fourier transform infrared spectrometry
US9557221B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 2016 |
| Grant date | Jan 31, 2017 |
| Priority date | — |
| Expiry date | Jun 24, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2003/4534
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An interferometer wherein an incident beam from a radiation source hits a beam splitter at a first oblique angle of incidence and is split into a first, reflected partial beam, and a second, transmitted partial beam, that subsequently travel along separate arms of the interferometer. The first and second partial beams are respectively intercepted, reflected, and re-split to form returning beam portions and reflected and transmitted exit beam portions. A second terminal mirror and a folding mirror, which intercepts the second partial beam at a second oblique angle of incidence, are associated with the second interferometer arm and positioned orthogonal to the reference plane and on opposite sides of the exit path, so that a section of the second partial beam from the folding mirror to the terminal mirror and back to the folding mirror crosses the exit beam twice.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.