Patent ID: 9151672
Filing Date: 2015-10-06
Classification: G01J

Abstract:
1. An optical absorption spectrometry system, comprising: a first light source configured to emit first light having first wavelengths within a first wavelength range; a second light source configured to emit second light having second wavelengths within a second wavelength range different from the first wavelength range; a dichroic beam combiner comprising 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; and a wavelength selective module 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.