DETECTION SYSTEM AND METHOD Russian patent published in 2013 - IPC G01N21/64 

FIELD: physics.

SUBSTANCE: detection system includes a substrate holder (16). The substrate has a detection surface and is configured to contain a sample volume such that the sample is at least partially in contact with the detection surface; an exciting radiation source (18) for supplying exciting radiation; an assembly for transmitting exciting radiation to a sample excitation region. The excitation region includes a detection surface; a detector (22) for detecting detection radiation arising from interaction of the exciting radiation with the sample and collected from the analysed region within the sample excitation region. The analysed region includes a detection surface; wherein the system further includes a magnetic assembly lying near the same side of the detection surface of the sample, and fixed relative the exciting radiation source (18) and the radiation transmitting assembly, wherein the magnetic assembly is configured to attract magnetic granules (15) within the sample to the detection surface, and a magnetic field directing assembly (24) for focusing the magnetic field from the magnetic assembly onto the analysed region, wherein the magnetic field directing assembly (24) has a hole through which the radiation transmitting assembly can direct exciting radiation and/or detection radiation.

EFFECT: high efficiency of detection.

13 cl, 7 dwg