Polarization interferometer spectrometer with rotatable birefringent element
US6222632A · kind A · utility
7Cited by
8References
39Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 7, 1999 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Apr 7, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J3/453
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An instrument for determining spectral content of an input light. The instrument has a rotating optical element that separates an input light into two partial beams and thereby introduces a variable OPD between the partial beams. The instrument then records an interferogram as a function of the variable OPD and thereby Fourier or Fast Fourier transforms the interferogram into a spectrogram so that the spectral content of the input light is revealed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.