Method and apparatus for multiwavelength imaging spectrometer
US7012695B2 · kind B2 · utility
40Cited by
25References
114Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2004 |
| Grant date | Mar 14, 2006 |
| Priority date | — |
| Expiry date | Jan 24, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/1347
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The disclosure generally relates to a method and apparatus for multi-wavelength imaging spectrometer. More specifically, in one embodiment, the disclosure relates to an optical filter for passing photons therethrough. The filter includes a first filter stage and a second filter stage. The first filter stage may include a first retarder element and a first liquid crystal cell. The first element may include an input face and an output face. One of the first element faces is not oriented substantially normal to the trajectory of photons passing through the filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.