Surgical microscope having an OCT-system and a surgical microscope illuminating module having an OCT-system

An illuminating module for attachment to a surgical microscope defining a viewing beam path for examining an object region and the surgical microscope having a microscope main objective for passing a viewing beam along said viewing beam path to said object region, said microscope main objective having a side facing away from said object region, the illuminating module comprising:

• an illuminating system defining an illuminating beam path;
• a first receptacle for accommodating a first light conductor for providing illuminating light;
• said illuminating system further including:
• a field diaphragm arranged in said illuminating beam path and being illuminated by said illuminating light;
• and, an illuminating optic disposed 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;
• a second receptacle for accommodating a second light conductor for providing an OCT-scanning beam of an OCT-system;
• 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;
• 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.

A compact illuminating and OCT-scanning module for attachment to a surgical microscope defining a viewing beam path for examining an object region and the surgical microscope having a microscope main objective for passing a viewing beam along said viewing beam path to said object region, said microscope main objective having a side facing away from said object region, the illuminating module comprising:

• an illuminating system generating an illuminating beam and defining an illuminating beam path;
• a first receptacle for accommodating a first light conductor for providing illuminating light for said illuminating beam;
• said illuminating system further including:
• a field diaphragm arranged in said illuminating beam path and being illuminated by said illuminating light;
• and, an illuminating optic disposed 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;
• a second receptacle for accommodating a second light conductor for providing an OCT-scanning beam of an OCT-system;
• an OCT-scanning unit disposed downstream of said second light conductor for imparting a scanning movement to said OCT-scanning beam;
• an in-coupling element disposed downstream of said OCT-scanning unit and 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 superpose said OCT-scanning beam onto said illuminating beam to form a composite beam passing through said second lens assembly and along said illuminating beam path;
• 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.