Optical instrument, particulary for monitoring DNA polymerase chain reactions

摘要

The invention relates to an optical instrument which is particularly suited for DNA PCR monitoring. The instrument comprises a plurality of spaced-apart reaction ingredient containers (1b), a light source (11) adapted to direct an excitation beam (22) toward the plurality of containers (1b), a Fresnel lens (3) disposed along an excitation beam path between the light source (11) and the plurality of containers (1b) and a detector (10) disposed along an excitation beam path and arranged to receive emission beams (26) emitted from the Fresnel lens (3) which is also disposed along an emission beam path between the plurality of containers (1b) and the detector (10).