Patent ID: 7973934

Claim:
A plasmon resonance sensor, in particular for biosensor technology, comprising a light-transmissive body ( 2 ), a—applied to an area of the body ( 2 )—reflective metal layer ( 3 ) or semiconductor layer having a surface which can be sensitized to molecules to be detected, which comprises partial areas ( 4 ) arranged alongside one another in a series and serving for forming a respective one of a plurality of measurement cells, comprising an areal light source ( 12 ) for producing a beam path ( 14 ) incident on the inner side of the layer ( 3 ) through the body ( 2 ), and comprising a detector ( 23 ), which captures the reflected emergent beam path ( 20 ) and ascertains in a time-dependent manner the angle of incidence of the light which changes as a result of molecular attachments to the sensitive surface and in the case of which an intensity minimum of emergent light occurs owing to resonance, a Fourier lens ( 24 ) being arranged in the emergent beam path ( 20 ) and the detector ( 23 ) being arranged at the focal point distance (F) with respect to the Fourier lens ( 24 ), wherein an incidence optical unit ( 11 ) is provided between the light source ( 12 ) and the layer ( 3 ), and it collimates the incident beam path ( 14 ) in the series direction of the partial areas ( 4 ) and directs it onto the layer ( 3 ) convergently in the incidence plane running perpendicular to the series direction of the partial areas ( 4 ), such that the light source ( 12 ) is imaged on each partial area ( 4 ) of the layer ( 3 ) in the form of a luminous line, and wherein a common light source is assigned to the partial areas ( 4 ) and provides contemporaneous beaming of all of the partial areas ( 4 ).