The present invention relates to an apparatus and a method for detecting the
fluorescence of a sample, wherein the apparatus comprises excitation light source
located on the same side of the sample as the detecting means. The apparatus may
be constructed as a single-sided as well as a double-sided system, wherein the
double-sided system comprises double-sided excitation system and/or double-sided
detecting system. The double-sided system may also be a combination of fluorescence
system and conventional microscopy. The apparatus may be used for analysis of various
types of biological material, liquid as well as solid material, and various other
types of material suitable being analysed through fluorescence studies.