Three=dimensional video endoscope for medical use

The invention concerns a 3D video endoscope with two optical inputs and an electrical output for the video signal. The entire optical system and the single camera head are situated at the endoscope's forward end. The electrical signals are transmitted by cables on the shaft channel to the signal-processing video electronic system. The beam deflection system is of simple design and comprises, on the one hand, a v or y-shaped prism which merges the two optical channels and directs them to the optical input of the camera head; and, on the other, a prism and reflecting prism which reflect one beam twice while the other beam passes through only the half-transparent mirror of the reflecting prism.