Abstract: A stand for a surgical microscope is suggested that is provided with vertical and horizontal supports, articulation units and a displacer for displacing the optics carrier in an X direction extending horizontally and transversely to an oblique pivot axis. A balancing apparatus is provided for balancing an optics carrier held by a pivot support of the displacer. The optics carrier is rotatable around a first rotational axis in relation to the pivot support. The balancing compensates for the use with and without a microscope holder and with and without add-on units. The balancing apparatus is provided with Y and Z displacement units comprising respective slides. The weight of a second slide of the Z displacement unit compensates the weight of the optics carrier with and without the microscope holder and with and without the add-on units via the first rotational axis.

Abstract: A microscope having a night vision apparatus, which apparatus can be impinged upon by beam paths proceeding from a specimen or object to be observed.

Abstract: An apparatus for adjusting a tension of a pulling device in a pulling-device drive includes a body and a lever arm. The pulling-device drive includes first and second shafts and the pulling device loops around the first and second shafts. The body includes a receptacle adapted to interact with the first shaft and a support point adapted to rotatably dispose the body about an axis of rotation. The lever arm extends from the body so that a spacing between the first and second shafts is modifiable by action of a force on the lever arm.

Abstract: A balancing apparatus for a surgical microscope is suggested for balancing an optics carrier that is held via a pivot support at a stand. The apparatus comprises a Y displacement unit comprising a first slide for displacement of the optics carrier in a Y direction and a Z displacement unit comprising a second slide for displacement of the optics carrier in a Z direction. Both slides are driven by motors. A selector switch enables an operator to select powering either the first motor or the second motor; and a forward-reverse switch enables the operator to select either the forward or the reverse driving mode for the motor powered by the selector switch and consequently establish the forward or the reverse driving mode for the first or second slide, respectively.

Abstract: A stand for a surgical microscope is suggested that is provided with vertical and horizontal supports, articulation units and a displacer for displacing the optics carrier in an X direction extending horizontally and transversely to an oblique pivot axis. The displacer has a pivot support provided with a pivotable parallelogram support and a holding arm that is attached to the pivotable parallelogram support and is configured such that it simultaneously serves as a displacer for displacing the optics carrier in the X direction. The pivot support is provided with an additional displacement unit that determines the position of the parallelogram support with reference to the second articulation unit and the additional displacement unit contains a displacement screw that protrudes through the parallelogram support and is connected in an articulated fashion at one of its ends to a displacement element mounted to the parallelogram support.

Abstract: The invention relates to an illumination device (1) for a microscope (10) utilizing at least one point light source (4) arranged on a carrier element (2), at least one carrier element (2) for receiving at least one point light source (4), and a holder (5) attachable to the microscope (10) and having an arc-shaped guide (6), being provided, the at least one carrier element (2) being mounted displaceably along the guide (6) in a horizontal plane. According to a further aspect, the illumination device (1) comprises a connector element (20) for attaching the illumination device (1) both to a stationary focusing column (12) and to an adjustable focusing arm (11) of a microscope (10).

Abstract: A suspension system for a ceiling mount of a medical device is suggested, comprising an attachment device provided at a ceiling and a console arranged between the attachment device and the ceiling mount for movement of the ceiling mount parallel to the ceiling. Said console comprises a support plate connected to the attachment device and a carriage that is movable with respect to the support plate and is connected to the ceiling mount. This allows movement of the medical device to the greatest extent possible to all positions in the surgical area without colliding with alternately usable operating lights.

Abstract: A tissue processor for treating tissue samples comprises a process chamber (10) in which the tissue samples can be treated with at least one liquid. The process chamber (10) is formed as a vessel of a magnetic stirrer. In the process chamber, a stirring body (16) for stirring the liquid is arranged, wherein the stirring body (16) comprises at least one magnet (40a, 40b) with the aid of which the stirring body (16) can be set in rotation by a drive unit (20) of the magnetic stirrer, and at least one vane (28a to 28f) by which the liquid to be stirred is stirred when the stirring body (16) rotates. According to a first aspect of the invention, the stirring body (16) has at least three vanes (28a to 28f), according to a second aspect of the invention, the stirring body (16) has at least one further magnet (40b). The north pole (46) of the one magnet (40a) and the south pole (50) of the further magnet (40b) face the drive unit (20).

Abstract: An illumination device for a microscope, in particular for an operation microscope, has a light source with an improved lifetime. The light source is in the form of a gas discharge lamp having a microwave generator, a microwave waveguide and an electrodeless bulb. The bulb contains a luminescent material and is coupled to the microwave waveguide so that microwaves can stimulate the luminescent material to emit light.

Abstract: A method and system for size calibration of an electronically generated image of a specimen that is generated by an optical instrument having a downstream digital camera operable in different reproduction modes is disclosed. In order to enhance image analysis reliability and decrease access times, it is proposed that firstly, for a specified reproduction mode of the camera, a reference calibration value indicating the ratio of a specimen dimension to an image dimension be determined and stored together with the specified reproduction mode; and that for size calibration, a correction factor regarding the reproduction mode be derived by comparing the stored reproduction mode to the reproduction mode of the camera currently in use, and from that correction factor, together with the stored reference calibration value, the current calibration value be calculated.

Abstract: An illumination device for a microscope has a variable working distance (d, d?), at which an object is illuminated obliquely from two different directions. Light from a light source is split into at least two illumination beam paths. In order to adapt to the different working distances, the light is subjected to an angle change before splitting or, if after splitting, then respectively by the same amount in both beam paths. A deviating element with at least two reflective surfaces is arranged in one of the illumination beam paths to induce a change in an angle at which one of the illumination beam paths strikes the object, in the same sense as another illumination beam path. The reflective surfaces may be arranged so that the illumination beam paths strike essentially the same region of the optical axis even with different working distances.

Abstract: The present invention relates to a stereo microscope (20) with a first and a second main beam path (21, 22), the spacing of which defines a stereo base (23), wherein an axis of the microscope (24) extends through the middle of the stereo base (23) parallel to the main beam paths (21, 22), and with an optical beam splitter device (30) for producing an assistant beam path (31) and a documentation beam path (32), wherein the direction of the assistant beam path (31) in a first position is rotated by 180° to the direction of the assistant beam path (31) in a second position of the beam splitter device (30), and the decoupled documentation beam path (32) in both positions of the beam splitter device (30) is in each case perpendicular to the decoupled assistant beam path (31), and wherein in both the first and second positions of the beam splitter device (30) the assistant beam path (31) can in each case be decoupled at least from the first main beam path (21) and the documentation beam path (32) can in each case b

Abstract: A stand for a surgical microscope is suggested, comprising a vertical support, at least one horizontal support, a first vertical articulation unit that is connected the horizontal support, a second articulation unit determining an oblique pivot axis, a displacement unit that is attached to the second articulation unit and has multiple degrees of freedom for displacement and balancing of an optics carrier carrying the surgical microscope, at least one pivot support encompassed by the displacement unit, and a displacer for displacing the optics carrier in an X direction extending horizontally and transversely to the oblique pivot axis. The pivot support comprises a pivotable parallelogram support and a holding arm that is attached to the pivotable parallelogram support and is configured such that it simultaneously serves as a displacer for displacing the optics carrier in the X direction.

Abstract: An illumination device for a light microscope with an objective, in particular for a stereo-microscope, illuminates an object plane of the light microscope. An illumination beam path of the illumination device is defined by a light source, a field diaphragm, illumination optics with at least one illumination lens, and at least one deflection element. The object plane of the microscope is obliquely illuminated with incident illumination, wherein an axis of the illumination beam path forms an angle ? greater than 0° with an optical axis of the objective.

Abstract: A microscope comprising a main objective having a lens assembly movable in the direction of the optical axis of the main objective for focal length change and comprising an illuminating unit with illumination deflector elements for deflecting an illuminating beam path for generating an illuminating beam path directed onto an object plane. The position of the illumination deflector elements is adjustable dependent on a focal length change of the main objective for centering the illumination, and the illumination deflector elements are designed as at least partly integrated into the movable lens assembly of the main objective. For this purpose, in particular a part of the lens surface of the movable lens assembly can be made reflective.

Abstract: A microscope having a night vision apparatus, which apparatus can be impinged upon by beam paths proceeding from a specimen or object to be observed.

Abstract: A microscope comprising a main objective having a variable focal length and comprising an illuminating unit including a light source and an illuminating optical system for generating an illuminating beam path directed onto the object plane and extending outside the main objective. A unit is provided for centering the illumination dependent on a variation of the focal length of the main objective. The illuminating optical system is mounted at least in part in a laterally shiftable manner for centering the illumination.

Abstract: An optical device, in particular a microscope (1), that includes a beam path in which is arranged at least one deflection element (5, 6a to 6f) for deflecting the beam path, at least one vibration sensor (34) being arranged in or on the optical device; at least one of the deflection elements (5, 6a to 6f) including a mirror having a controllably deformable mirror surface (50); and a control unit (32) being provided that, as a function of the output signal of the vibration sensor (34), applies control to the at least one deflection element (5, 6a to 6f) in order to adjust the mirror surface (50) in such a way that vibrations of the optical device are compensated for by a correspondingly opposite-phase adjustment of the mirror surface (50).

Abstract: A microscope comprising a main objective having a variable focal length and comprising an illuminating unit including a light source and an illuminating optical system for generating an illuminating beam path directed onto the object plane and extending outside the main objective. A unit is provided for centering the illumination dependent on a variation of the focal length of the main objective, and the illuminating optical system is mounted at least in part in a laterally shiftable manner for centering the illumination. In particular, the illuminating optical system has a diaphragm that is mounted in a laterally shiftable manner.

Abstract: An assistant microscope add-on device for a surgical microscope (1) comprises an objective (22) inclined relative to an object plane (10) with an object field (10?), wherein the objective defines an objective plane (22?) and an objective axis (16?) perpendicular thereto forming an angle ? larger than 0° to the surface normal of the object plane (10). A tube (23) and an eyepiece (24) having an eyepiece lens (27) defining an eyepiece plane (27?) and an eyepiece axis (35) perpendicular thereto. Due to the oblique viewing angle, an intermediate image plane (26) to be imaged by the eyepiece (24) is inclined relative to the objective plane (22?). The resulting aberration is eliminated by the eyepiece axis (35) and the objective axis (16?) forming an angle ? of larger than 0°, wherein the angle ? is so chosen that the eyepiece axis (35) is substantially perpendicular to the intermediate image plane (26). Consequently, the object field (10?) is imaged free of distortion and sharply across the entire image area.