Patent ID: 7157711
Filing Date: 2007-01-02
Classification: G01J,G01N

Abstract:
1. A spectrometer comprising: an infrared source for projecting an infrared beam; a gas sample cell positioned in the path of the infrared beam; a scanning mirror bearing a diffraction grating comprising a plurality of parallel lines and positioned in the path of the infrared beam after passage thereof through the gas sample cell; a mirror drive for oscillating the scanning mirror about an axis parallel to the diffraction grating lines; a first focusing element positioned to focus at least one band of interest of the infrared beam as diffracted by the diffraction grating; a first detector positioned to receive the at least one focused band of interest; a first detector readout circuit operatively coupled to the first detector to receive a signal from the first detector; and a synchronizer operatively coupled to the mirror drive and the detector readout circuit, wherein the synchronizer is adapted to synchronize oscillation of the scanning mirror with an output of the first detector readout circuit.