Microscope

A confocal laser scanning microscope comprising at least one detector, and two objectives, one of the objectives being arranged on each of the two sides of the specimen plane and the objectives being directed toward one another and having a common focus;

• at least one beam splitter for distributing the illuminating light to the objectives, and a beam recombiner for combining the detected light coming from the objectives, being provided in the illumination/detection beam path;
• a modular assembly for grouping the objectives and the beam splitter/beam recombiner therein and an interface is provided with the modular assembly for connection to the illumination/detection beam path of the microscope wherein the modular assembly has a baseplate on which optical components of the modular assembly are mounted, and wherein the optical components of the modular assembly are designed, and are installed and arranged on the baseplate, in such a way that temperature-related expansions compensate for one another and therefore have no effect on the optical alignment state of the modular assembly.