Abstract: An adapter is disclosed which is suitable for connecting a light guide end piece to a coupling device of a light source of high intensity, particularly of a medical laser apparatus. The adaptor has a first section 2 which can be fixed in the coupling device 11 as well as a second section 3 which can be axially slid with respect to the first section 2. The second section 3 carries an input lens system 4 and, when the light guide end piece 20 is pushed in, is axially displaced from the first I to a second II position and locked there. Safety devices of the laser apparatus which prevent a start of the operation without any inserted light guide are switched only in the second position II.

Abstract: A device for allowing the adjustment of the length of a fiber optic waveguide is disclosed. The device couples casings of different inner and outer diameters together, while allowing for the movement of the fiber optic waveguide within the casings. The device is useful for adapting the fiber optic guide to different instruments, such as endoscopes.

Abstract: A connector for coupling a medical laser tool to a laser has a housing with coupling fitting at one end which is plugged into a laser receptacle and with a light conductor cable connection at the other end. The light conductor cable in turn is connected to the laser tool. The coupling fitting includes, in addition to the optical coupling element, heavy and light duty electrical contact members for an electrical power and data transmission and a gas conduit coupling for a gas transmission through the connector.