Apparatus and method for reducing spectral complexity in optical sampling
US6684099B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2002 |
| Grant date | Jan 27, 2004 |
| Priority date | — |
| Expiry date | Jun 25, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/6824
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An optical sampling subsystem and method that reduces the effect of errors in an optical sampling subsystem when heterogeneously distributed samples are measured in the path of a spectrometer. The optical sampling subsystem is used to collect the non-uniformly distributed radiation exiting the heterogeneous sample and produce a uniform irradiance at its output. The output is then directed into the wavenumber (inverse of wavelength in centimeters) dispersive or modulating device of the spectrometer. The resulting spectra exhibit less spectral complexity arising from components of the sampling subsystem design and the heterogeneous sample, in particular, the effect of wavenumber shift is minimized. Improved quantitative predictions, qualitative analysis and calibration transfer are direct consequences of the reduced spectral complexity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.