Patent ID: 8742367

Claim:
An apparatus for optically analysing samples contained in sample sites of a sample holder, comprising a first light source and at least one second light source, a monochromator having an input to which first light source is optically connected or connectable and an output for monochromatized light, light guiding means for guiding light originating from the first and from the at least one second light sources to the sample sites, a detector for detecting light from the sample sites, wherein the apparatus further comprises a light relay comprising a first input optically connected to the output of the monochromator, at least one second input optically connected to a second light source such that the light from the second light source by-passes the monochromator, and a first output and a second output adapted for guiding light from selected input of the light relay to the sample sites optionally from above or from below of the sample holder, and wherein the inputs of the light relay are arranged in circumferential manner to an input member and the outputs of the light relay are arranged in circumferential manner on an output member facing the input member, the input member or output member being rotatable for selecting the light source optically connected to the sample sites.