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US 2008/0068612 A1Published application
Fourier-transform spectrometers
OwnerChristopher Manninginventor
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Abstract
A novel tilt-insensitive interferometer geometry is described. The design uses tilt-insensitive optics to simultaneously maintain high throughput and precise interferometric alignment, even in the presence of non-ideal scanning motions. A variety of enhancements to the basic design are described, providing a family of related interferometer designs. These spectrometers have applications in spectrometry, spectral imaging and metrology.
Claims1
A spectrometer, comprising:
- a source of a primary beam of radiant energy;
- a beamsplitter fixed in relation to the primary beam, for dividing primary beam into at least first and second energy beams which follow first and second optical paths;
- two mirrors mounted on thermally stable alignment fixturing;
- a reference source coupled to the spectrometer;
- a first refractive element mounted on one or more bearings, for varying the optical path length in a first optical path;
- at least one return reflector for reflecting the first beam back to the beamsplitter;
- at least one radiant energy detector;
- a control, data acquisition and processing electronic system;
5 more elements
Dependencies are inferred from the claim text.