Abstract: A set of prisms with a variable viewing direction including: three prisms; the first and third prisms each have a light entrance, mirror surface and light exit surfaces, the second prism has a beam path surface having light entrance and exit regions and at least two mirror surfaces, the first prism is pivoted relative to the second prism about an axis of rotation that runs through the mirror surface of the first prism and one of the at least two mirror surfaces of the second prism, and the third prism is immovably arranged with respect to the second prism, and the second prism is sectionally wider than the first and/or third prisms transversally to a beam path such that at least one lateral wider section of the single beam path surface of the second prism extends on at least one side beyond the light entrance surface of the third prism.

Abstract: A swing prism for an endoscope with a variable viewing direction, the swing prism including: a flat light inlet surface, a flat light outlet surface, and a flat mirror surface, wherein the flat light inlet surface and the flat light outlet surface are arranged at a 90° angle relative to each other and are each arranged at a 45° angle relative to the flat mirror surface, the swing prism is configured as a cylinder-section-shaped body with a base surface configured as a circle segment, and a cylindrical axis of the cylinder-section-shaped body is perpendicular to the flat light outlet surface, and in a projection onto the flat light outlet surface, the flat light inlet surface constitutes a chord which delimits the circle segment.

Abstract: An endoscope including: an endoscope tip arranged at the distal end of the endoscope. The endoscope tip including: an outer wall having an opening; and a window hermetically joined into the opening, the window being at least partially optically transparent; wherein the outer wall has a ceramic material.

Abstract: An endoscope including an endoscope shaft closed by a cover glass; an optical system arranged in the endoscope shaft, the optical system including at least one prism located proximally to the cover glass; a prism holder for holding the optical system and mounted so as to be pivotable about a rotation axis perpendicular to a longitudinal axis of the endoscope shaft, wherein the prism holder has at least a portion having a circular circumference with a toothed arrangement; an elongated adjustment element movable along the longitudinal axis of the endoscope shaft and having a mating toothed arrangement for engagement with the toothed arrangement of the prism holder, the mating toothed arrangement being formed at least on a distal portion; wherein at least the distal portion of the adjustment element is bendable such that it is guided in a curved guide channel formed at least partially around the prism holder.

Abstract: A video endoscope having a handgrip and shaft having a cladding tube, wherein a prism unit having at least two prisms is connected to the cladding tube, wherein at least one distally arranged prism is rotated to modify a viewing angle around a rotation axis, an inner positioning system that comprises at least one rotational body arranged on a rotation axis of the shaft, axially fastened, and rotatable around the longitudinal axis of the shaft, to the distal tip of which the at least one image sensor is fastened, and at least one axially movable translational body, wherein a drive device is configured such that upon actuating a first control element, only the rotational body is rotated, and upon actuating a second control element, the translational body is moved and the rotational body is rotated such that a horizon position of an image formed on the image sensor remains constant.