Abstract: An optical observation instrument according to the invention, in particular a surgical microscope or exoscope, comprises an optics unit with an objective arrangement and at least one electronic image recorder, wherein the optics unit has a first stereo channel with a first beam path and a second stereo channel with a second beam path for recording a stereo image of an object field with the at least one electronic image recorder and wherein the first and the second beam path extend through the objective arrangement.

Abstract: An optical observation instrument according to the invention, in particular a surgical microscope or exoscope, comprises an optics unit with an objective arrangement and at least one electronic image recorder, wherein the optics unit has a first stereo channel with a first beam path and a second stereo channel with a second beam path for recording a stereo image of an object field with the at least one electronic image recorder and wherein the first and the second beam path extend through the objective arrangement. Further, the observation instrument comprises a retaining apparatus which comprises a retaining bracket, which engages over the optics unit, wherein the retaining bracket comprises an operating device with a number of operating elements for controlling a retaining arm, to which the retaining apparatus is connectable.

Abstract: A negative lens, for an oblique-view endoscope objective, has a first face with a first optical surface and a second face with a second optical surface opposing the first optical surface, the second optical surface being a concave optical surface, wherein a recess is formed in the second face adjacent to the concave optical surface. An endoscope objective, that includes a deflection prism having an entrance face and further including a negative lens, the negative lens having a first face with a first optical surface and a second face with a second optical surface opposing the first optical surface, the second optical surface being a concave optical surface. The negative lens is mounted on a distal planar surface of the deflection prism such that a rim encompassing the concave optical surface abuts the distal planar surface of the deflection prism.

Abstract: An endoscope includes a window component made of a transparent material at the distal end of the endoscope, wherein the window component is not rotationally symmetric in relation to the direction of view, and an optical correction apparatus with a cylindrical lens for correcting the aberration of the window component. The correction apparatus may contain a second lens movable relative to the cylindrical lens.

Abstract: An optical observation instrument according to the invention, in particular a surgical microscope or exoscope, comprises an optics unit with an objective arrangement and at least one electronic image recorder, wherein the optics unit has a first stereo channel with a first beam path and a second stereo channel with a second beam path for recording a stereo image of an object field with the at least one electronic image recorder and wherein the first and the second beam path extend through the objective arrangement. Further, the observation instrument comprises a retaining apparatus which comprises a retaining bracket, which engages over the optics unit, wherein the retaining bracket comprises an operating device with a number of operating elements for controlling a retaining arm, to which the retaining apparatus is connectable.

Abstract: An optical observation instrument according to the invention, in particular a surgical microscope or exoscope, comprises an optics unit with an objective arrangement and at least one electronic image recorder, wherein the optics unit has a first stereo channel with a first beam path and a second stereo channel with a second beam path for recording a stereo image of an object field with the at least one electronic image recorder and wherein the first and the second beam path extend through the objective arrangement.

Abstract: A negative lens, for an oblique-view endoscope objective, has a first face with a first optical surface and a second face with a second optical surface opposing the first optical surface, the second optical surface being a concave optical surface, wherein a recess is formed in the second face adjacent to the concave optical surface. An endoscope objective, that includes a deflection prism having an entrance face and further including a negative lens, the negative lens having a first face with a first optical surface and a second face with a second optical surface opposing the first optical surface, the second optical surface being a concave optical surface. The negative lens is mounted on a distal planar surface of the deflection prism such that a rim encompassing the concave optical surface abuts the distal planar surface of the deflection prism.

Abstract: A negative lens, for an oblique-view endoscope objective, has a first face with a first optical surface and a second face with a second optical surface opposing the first optical surface, the second optical surface being a concave optical surface, wherein a recess is formed in the second face adjacent to the concave optical surface. An endoscope objective, that includes a deflection prism having an entrance face and further including a negative lens, the negative lens having a first face with a first optical surface and a second face with a second optical surface opposing the first optical surface, the second optical surface being a concave optical surface. The negative lens is mounted on a distal planar surface of the deflection prism such that a rim encompassing the concave optical surface abuts the distal planar surface of the deflection prism.

Abstract: A relay lens system for transmitting an image from a distal end of the relay lens systems to a proximal end of the relay lens system including a plurality of imaging devices with in each case one or more lenses, wherein each imaging device of the plurality of imaging devices images a real intermediate image distal to the imaging device into a further real intermediate image proximal to the imaging device. The plurality of imaging devices has a plurality of first imaging devices and a second imaging device. The first imaging devices each have a chromatic aberration. The chromatic aberration of the first imaging devices is corrected by the second imaging device. The second imaging device is arranged between the first imaging devices.

Abstract: An endoscope includes a window component made of a transparent material at the distal end of the endoscope, wherein the window component is not rotationally symmetric in relation to the direction of view, and an optical correction apparatus with a cylindrical lens for correcting the aberration of the window component. The correction apparatus may contain a second lens movable relative to the cylindrical lens.

Abstract: A negative lens, for an oblique-view endoscope objective, has a first face with a first optical surface and a second face with a second optical surface opposing the first optical surface, the second optical surface being a concave optical surface, wherein a recess is formed in the second face adjacent to the concave optical surface. An endoscope objective, that includes a deflection prism having an entrance face and further including a negative lens, the negative lens having a first face with a first optical surface and a second face with a second optical surface opposing the first optical surface, the second optical surface being a concave optical surface. The negative lens is mounted on a distal planar surface of the deflection prism such that a rim encompassing the concave optical surface abuts the distal planar surface of the deflection prism.

Abstract: A relay lens system for transmitting an image from a distal end of the relay lens systems to a proximal end of the relay lens system including a plurality of imaging devices with in each case one or more lenses, wherein each imaging device of the plurality of imaging devices images a real intermediate image distal to the imaging device into a further real intermediate image proximal to the imaging device. The plurality of imaging devices has a plurality of first imaging devices and a second imaging device. The first imaging devices each have a chromatic aberration. The chromatic aberration of the first imaging devices is corrected by the second imaging device. The second imaging device is arranged between the first imaging devices.

Abstract: An optics tube for an endoscope including a magnet arrangement which extends parallel to a longitudinal axis of the optics tube. A rod lens including a rod-shaped lens unit made of a rod-shaped lens element or a plurality of lens elements cemented to one another, wherein, on one side on the circumferential face thereof, the lens unit includes a magnet arrangement. The invention also relates to a combination of an optics tube and a rod lens, and to an endoscope.

Abstract: A rod lens that includes a rod-shaped lens unit made of a rod-shaped lens element or a plurality of lens elements cemented to one another, wherein, on the circumferential face thereof, the lens unit includes at least one axially magnetized magnet arrangement. The invention also relates to an endoscope with a lens arrangement, which includes at least a first and, arranged adjacent to the first, a second rod lens, and to a method for assembling such an endoscope.

Abstract: In an optics tube for an endoscope, a lens arrangement including at least one rod lens is received in the inside of the optics tube, wherein a sleeve is fixed on the at least one rod lens and at least partially encloses the rod lens, and wherein the sleeve is welded to the optics tube. The invention also relates to an endoscope having such an optics tube, and to a method for mounting at least one rod lens in the inside of an optics tube.

Abstract: An endoscope includes a window component made of a transparent material at the distal end of the endoscope, wherein the window component is not rotationally symmetric in relation to the direction of view, and an optical correction apparatus for correcting the aberration of the window component.

Abstract: A linear motor for optical systems, for example, endoscopes, is described. The motor has a stator with a magnetic guiding member and a coil. The armature of the motor includes two permanent magnets which are of opposite polarity. A pole piece made of soft-magnetic material is provided between the permanent magnets. By applying current to the coil, the armature can be displaced from a rest position in the longitudinal direction.

Abstract: An optics tube for an endoscope including a magnet arrangement which extends parallel to a longitudinal axis of the optics tube. A rod lens including a rod-shaped lens unit made of a rod-shaped lens element or a plurality of lens elements cemented to one another, wherein, on one side on the circumferential face thereof, the lens unit includes a magnet arrangement. The invention also relates to a combination of an optics tube and a rod lens, and to an endoscope.

Abstract: A rod lens that includes a rod-shaped lens unit made of a rod-shaped lens element or a plurality of lens elements cemented to one another, wherein, on the circumferential face thereof, the lens unit includes at least one axially magnetized magnet arrangement. The invention also relates to an endoscope with a lens arrangement, which includes at least a first and, arranged adjacent to the first, a second rod lens, and to a method for assembling such an endoscope.

Abstract: In an optics tube for an endoscope, a lens arrangement including at least one rod lens is received in the inside of the optics tube, wherein a sleeve is fixed on the at least one rod lens and at least partially encloses the rod lens, and wherein the sleeve is welded to the optics tube. The invention also relates to an endoscope having such an optics tube, and to a method for mounting at least one rod lens in the inside of an optics tube.