Optical absorption spectrometry system including dichroic beam combiner and splitter
US9151672B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2013 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Nov 21, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2003/1876
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An optical absorption spectrometry system includes first and second light sources, a dichroic beam combiner and a wavelength selective module. The first light source emits first light having first wavelengths within a first wavelength range, and the second light source emits second light having second wavelengths within a second wavelength range different from the first wavelength range. The dichroic beam combiner includes a predetermined first reflectance/transmission transition region, the dichroic beam combiner being configured to transmit a first portion of the first light and to reflect a second portion of the second light to provide combined light. The wavelength selective module is configured to disperse the combined light received at an entrance aperture, to select a sample wavelength range of the dispersed light as sample light, and to output the sample light having the selected sample wavelength range from an exit aperture for illuminating a sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.