Operation lamp with camera system for 3D referencing

The system as set forth in any one of the preceding claims, wherein said light source (15) and at least two cameras are rigidly connected to each other such that said light source and said cameras may be moved together.

The system as set forth in any one of the preceding claims, wherein at least two cameras are arranged substantially point-symmetrically with respect to said center of said light source (15).

The system as set forth in any one of the preceding claims, wherein said cameras are provided with infrared transmission filters in order to detect infrared radiation reflected by reflectors or emitted by light sources, the infrared portion of said light emitted from said light source (15) being at least in part filtered out.

The system as set forth in any one of the preceding claims, comprising at least three cameras, wherein an evaluation circuit is provided to evaluate the signals detected by said cameras, in order to detect when the field of view of at least one camera is obstructed, and in order—for referencing—to change from said respective camera with the obstructed field of view to another camera of said plurality of cameras, whose field of view is not obstructed.

A referencing system for surgical or medical instruments and for apparatus for treatment, comprising:

• at least two cameras (1-4);
• a computational unit (11) connected to said cameras, for evaluating said camera signals and for referencing three-dimensional spatial co-ordinates;
• a group of radiation sources comprising at least two radiation sources for said infrared radiation, wherein said cameras detect said infrared radiation emitted by said group of radiation sources characterized in that said at least two cameras (1-4) and a light source (15) for the shadow-free illumination of an area are held together in such a way that said optical signals may be evaluated, for referencing three-dimensional spatial co-ordinates in said illuminated area (A).