Abstract: A surgical microscope includes an optical assembly to image an object plane with a microscope main objective system, through which a first stereoscopic partial beam path with a first optical axis and a second stereoscopic partial beam path with a second optical axis pass. An illumination device includes a light source assembly to provide illumination light in a luminous plane, with a radiant field stop, and an illumination optical unit which at least partially images a luminous object arranged in the luminous plane in the illumination beam path into a luminous image plane located in the microscope main objective system or for the vertical distance z of which from the microscope main objective system on the side facing the object region or the side facing away from the object region, in relation to a focal length f of the microscope main objective system, the following applies: z/f<10%.

Abstract: A surgical microscope includes an image capture unit having an image sensor, a detection beam path, an image evaluation unit, a connection region for attaching a protective glass module with an objective protective glass. The image sensor has a detection region which has a used detection region for capturing the object region, and a partial detection region, which is not assigned to the used detection region. The image capture unit is configured such that, when the protective glass module with the objective protective glass is arranged at the connection region, a detail of the protective glass module with the objective protective glass is capturable by the partial detection region of the image sensor. The image evaluation unit is configured to generate a signal when an objective protective glass is detectable by the evaluation of the image data of the partial detection region of the image sensor.