Patent ID: 6141100
Filing Date: 2000-10-31
Classification: G01J,G01N

Abstract:
An imaging attenuated total reflection (ATR) spectrometer comprising:a radiation source;an internal reflection element (IRE) having a front surface and a rear surface, said front surface including a contact area for engaging a sample-under-test;a two-dimensional focal plane array detector for detecting radiation incident upon and reflected from discrete locations of said contact area;means for directing and concentrating radiation from said radiation source through said rear surface of said IRE towards said contact area such that an angle of incidence of said input beam at said front surface is equal to or greater than a critical angle for said IRE;means for collecting reflected radiation from said contact area and for imaging said reflected radiation onto said two-dimensional focal plane array detector, said reflected radiation including information relating to a spatial distribution of reflected energies; anda wavelength-selective element coupled to intercept radiation traveling between said radiation source and said two-dimensional focal plane array detector to effect spectrally selective modulation of radiation intercepted by said wavelength-selective element.