Optical microscope comprising an optomechanical fine-adjustment device and optomechanical adjustment method

An optical microscope comprising an optical system (1) and a confocal diaphragm (2), the confocal diaphragm (2) being arranged in a Fourier plane (12) of the microscope, transverse to an optical axis (10) of the microscope, the Fourier plane (12) being optically conjugate with an object plane via the optical system (1), the confocal diaphragm (2) being fixed relative to the microscope body, the microscope being able to collect a light beam (20) from the object plane, the optical system (1) being adapted to focus the light beam (20) in the Fourier plane (12) and to inject at least a portion of the light beam (20) through the confocal diaphragm (2), characterized in that the optical microscope includes a refractive optical component (3) arranged between the optical system (1) and the confocal diaphragm (2), the refractive optical component (3) being rotatably mounted transverse to the optical axis (10) of the microscope, in order to adjust a lateral position of the focused light beam relative to the confocal diaphragm (2).