Device for the picture providing and spectroscopic diagnosis of tissue

The invention relates to a device for the picture-providing and spectroscopic diagnosis of tissue with the alternative or combined use of three diagnosis methods, specifically a mode A for the picture-providing white light diagnosis, a mode B for the picture-providing fluorescence diagnosis and a mode C for the fluorescence-spectroscopic diagnosis. The device comprises a first light means whose light as a beam bundle via a beam path is coupled into an optical fiber leading to an endoscope and a second illumination means whose light as a beam bundle via a second beam path may be coupled into the same fiber-optic. In the first beam path there is arranged an element widening the bundle opening, for the light beam bundle entering into the fiber-optic and in the second beam path there is arranged an element limiting the bundle opening, for the light beam bundle entering into the fiber-optic. Furthermore there are arranged means in the two beam paths with which the light beam bundle may be alternately temporarily released or interrupted. In mode C this permits the specific examination of a selected point wise small tissue region with light from a second beam path with a pseudo-simultaneous, large-surface illumination of the surroundings of the point wise small tissue region with light from the first beam path.