Three-dimensional light absorption spectroscopic imaging
US6088100A · kind A · utility
57Cited by
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Key dates
| Filing date | Jun 29, 1998 |
| Grant date | Jul 11, 2000 |
| Priority date | — |
| Expiry date | Jun 29, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/4795
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An absorption imaging spectrometer for providing a three-dimensional spectral image of a light-transmitting sample. Temporally incoherent light is used to illuminate the sample, with a portion of the beam split off as a reference beam and subsequently recombined with the return beam from the sample after a variable delay path. An optical configuration is provided for modulating a time delay of the reference beam, with the interferogram obtained at each surface of dielectric discontinuity within the sample being deconvolved to derive an absorption spectrum.
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