A method for analyzing properties of a sample by measuring fluorescence
parameters in multiple foci, comprises the steps of splitting a
collimated primary laser beam with a splitting device into at least two
collimated secondary laser beams and deflecting the secondary laser beams
such that they propagate at different propagation angles with respect to
an optical axis of a focussing optic, focussing the secondary laser beams
with the focussing optic into at least two volume elements in the sample,
detecting light emitted from the volume elements with a detecting device,
and evaluating the detected light for obtaining the properties to be
analyzed. Furthermore, a device for implementing this method is
described. The invention is particularly suited for high-throughput
screening applications.