MULTI-FUNCTION ABSORPTION SPECTROMETER Russian patent published in 2002 - IPC

FIELD: spectrometry. SUBSTANCE: multi-function absorption spectrometer has spectral device with focusing system of bifocal type, former of translucent radiation with aperture diaphragm and two image detectors. Both detectors are removed from plane of outlet slot of spectral device by value of difference of focal distances. One of them is optically matched to examined object and the other detector is matched to examined object and simultaneously to former of translucent radiation through operational aperture of diaphragm. EFFECT: improved time resolution of spectrometer with preservation of its spectral resolution. 3 cl, 5 dwg