Illuminating Device For An Operating Microscope

The present invention relates to an illuminating device for an operating microscope comprising two observation beam paths (152, 154) for a first observer (main surgeon) and two observation beam paths (156, 158) for a second observer (assistant), having an illuminating system (102; 106a, 108a) for providing two parallel illuminating beam paths (106, 108) and a deflecting device (118, 120), for deflecting the parallel illuminating beam paths onto an object (200) that is to be observed, the deflecting device comprising a first semitransparent deflector element (118) which is associated with a first observation beam path (154) of the first observer and a first observation beam path (156) of the second observer, and a second semitransparent deflector element (120), which is associated with a second observation beam path (152) of the first observer and a second observation beam path (158) of the second observer, the first illuminating beam path (106) acting exclusively on the first deflector element (118) and the second illuminating beam path acting exclusively on the second deflector element.