To spectrally detect a contaminant in a moving container, a set of reference spectral information is stored. Thereafter, radiant energy (35) is directed at the liquid (34) near the bottom of the container so that the radiant energy is modified by the contents of the container and travels through the contents of the container in multiple paths (ACE) and (ABDE) of varying length. Spectral information from detected portions of the modified radiant energy is obtained, and is compared to the stored techniques. Based on the relationship between this spectral information and the stored set of reference spectral information, the presence or absence of a contaminant is indicated.
申请公布号
WO9522755(A1)
申请公布日期
1995.08.24
申请号
WO1995US01362
申请日期
1995.02.01
申请人
THERMEDICS DETECTION, INC.
发明人
ACHTER, EUGENE, K.;BEATY, JOHN, S.;KLOTZSCH, HELMUT, W.;THOMPSON, CRAIG, D.