Patent ID: 7538940

Claim:
A tube for a microscope, in which at least two beam paths are provided, is hereby characterized in that a change-over device is provided in the tube, wherein the change-over device has a rotating axis which is arranged perpendicular to the beam paths aligned by an objective, by means of which device a first flat-field optical element and a second flat-field optical element, both of said first flat-field optical element and said second flat-field optical element being present, are alternately switched into or out of each beam path of the beam paths aligned by an objective, for aligning the beam paths for an observer, wherein the second flat-field optical element has a function of exchanging the beam paths and inverting the image, wherein the first flat-field optical element does not exchange the beam paths and does not invert the image, and wherein the first flat-field optical element and the second flat-field optical element comprise a bending element, by means of which the beam paths aligned by an objective can be bent in such a way that, when the first flat-field optical element is switched into the beam paths, the beam paths are bent in an angle >0° after passing the first flat-field optical element and when the second flat-field optical element is switched into the beam paths, the beam paths are bent in an angle >0° after passing the second flat-field optical element.