Abstract: The invention concerns an image-inverting system for a sighting telescope, where the image-inverting system has at least two lenses which are each held in a bearing with at least one tappet and are mutually displaceable parallel to an optical axis of the image-inverting system, where the displacement of the at least two displaceable lenses modifies a reproduction scale at which an image projected onto a first image plane of the image-inverting system is shown on a second image plane of the image-inverting system, and a guide rod with at least two curved guide channels, where the tappets engage in the guide channels, and at least a reinforcing ring which is arranged touching or affixed to the circumference of the guide rod for increasing the mechanical stability of the guide rod.

Abstract: The invention concerns an image-inverting system for a sighting telescope, where the image-inverting system has at least two lenses which are each held in a bearing with at least one tappet and are mutually displaceable parallel to an optical axis of the image-inverting system, where the displacement of the at least two displaceable lenses modifies a reproduction scale at which an image projected onto a first image plane of the image-inverting system is shown on a second image plane of the image-inverting system, and a guide rod with at least two curved guide channels, where the tappets engage in the guide channels, and at least a reinforcing ring which is arranged touching or affixed to the circumference of the guide rod for increasing the mechanical stability of the guide rod.

Abstract: The invention concerns an image-inverting system for a sighting telescope, where the image-inverting system has at least two mutually displaceable lenses in a tube of the image-inverting system parallel to an optical axis of the image-inverting system, where displacement of the at least two displaceable lenses modifies the reproduction scale at which an image projected onto a first image plane of the image-inverting system is shown on a second image plane of the image-inverting system, where the at least two displaceable lenses are arranged in any position between the first and the second image plane, where a surface of the inside of a tube facing the optical axis having at least one absorption area with absorption zones for absorbing incident light and with sliding surfaces located between neighboring absorption zones for bearings of the at least two displaceable lenses, where the total area of the sliding surfaces is smaller than the total area of the absorption zones, where the at least one sliding surface

Abstract: The invention concerns a reversing system for a sighting telescope, where the reversing system has at least two mutually displaceable lenses in a tube of the reversing system parallel to an optical axis of the reversing system, where displacement of the at least two displaceable lenses modifies the reproduction scale at which an image projected onto a first image plane of the reversing system is shown on a second image plane of the reversing system, where the at least two displaceable lenses are arranged in all positions between the first and the second image plane, where a surface of the inside of a tube facing the optical axis having at least one absorption area with absorption zones for absorbing incident light and with sliding surfaces located between neighbouring absorption zones for bearings of the at least two displaceable lenses, where the total area of the sliding surfaces is smaller than the total area of the absorption zones, where the at least one sliding surface is arranged at a different distanc