Patent ID: 7889423

Claim:
A surgical microscope defining a viewing beam path for examining an object region, the surgical microscope comprising: an illuminating system defining an illuminating beam path and including a light source for generating an illuminating light; said illuminating system further including a field diaphragm arranged in said illuminating beam path and being illuminated by said illuminating light; said illuminating system further including an illuminating optic arranged in said illuminating beam path downstream of said field diaphragm for imaging said field diaphragm at infinity with an illuminating beam having parallel rays; said illuminating optic including first and second lens assemblies arranged in said illuminating beam path; an objective configured as a microscope main objective to permit the viewing beam to pass therethrough; said microscope main objective being arranged in said illuminating beam path for imaging said field diaphragm onto said object region; an OCT-system for examining said object region; said OCT-system providing an OCT-scanning beam guided through said microscope main objective; an in-coupling element disposed in said illuminating beam path between said first and second lens assemblies for coupling said OCT-scanning beam into said illuminating beam path so as to form a composite beam comprising said illuminating beam and said OCT-scanning beam passing through said second lens assembly and along said illuminating beam path; said microscope main objective having a side facing away from said object region; and, a path-folding unit mounted between said side of said microscope main objective and said second lens assembly for directing said composite beam to said microscope main objective.