Operating microscope having an illumination device

A surgical microscope, comprising:

• an optical assembly configured to image an object plane into an image plane, is the object plane being arranged in an object region, the optical assembly including 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;
• and
• an illumination device configured to illuminate the object region with an illumination beam path, the illumination device including a light source assembly configured to provide illumination light in a luminous plane, a radiant field stop arranged at a distance from the luminous plane, and an illumination optical unit configured to image the radiant field stop in a radiant field stop plane on a side of the microscope main objective system facing the object region with a beam path passing through the microscope main objective system,
• wherein the illumination optical unit at least partially images a luminous object arranged in the luminous plane in the illumination beam path into at least one luminous image plane located in the microscope main objective system or for a 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%,
• wherein, to image the luminous plane, the illumination device comprises a collector lens system with an optical axis and a converging lens system, the radiant field stop being arranged between the luminous plane and the collector lens system, and
• wherein the light source assembly comprises two light sources, each of the two light sources having a rectangular luminous area arranged in the luminous plane, the luminous areas having centroids which are spaced apart from one another and located on a straight line which perpendicularly intersects the optical axis of the collector lens system, and boundary sides running obliquely with respect to this straight line, or
• wherein the light source assembly comprises the two light sources, each of the two light sources having a round luminous area arranged in the luminous plane, the luminous areas having centroids which are spaced apart from one another and located on a straight line which perpendicularly intersects the optical axis of the collector lens system, the boundary sides running orthogonally with respect to the straight line.