A balancing device for a rotary apparatus including a rotary body which is configured to pivot or swivel about at least one rotary shaft is provided. The balancing device includes a magnet assembly and a torque adjusting mechanism. The magnet assembly includes a combination of two or more magnets, and the torque adjusting mechanism is configured to adjust a torque generated by the combination of the two or more magnets. The balancing device generates an output torque in the form of a cosine curve or sine curve which optimally matches with an unbalancing torque of the rotary body. The balancing device has a small size and is invulnerable to fatigue failure.

Examples relate to a surgical microscope system and a corresponding apparatus, method and computer program. The surgical microscope system comprises one or more sensors for providing sensor information about a balance of the surgical microscope system. The surgical microscope system comprises one or more brakes for holding at least one component of the surgical microscope system in place. The surgical microscope system comprises a surgical microscope. The surgical microscope system comprises a processing module, configured to process the sensor information. The processing module is configured to determine an information about the balance of the surgical microscope system. In some embodiments, the processing module is configured to provide a warning to a user of the surgical microscope system based on the information about the balance of the surgical microscope system. The warning indicates danger of imbalance in the surgical microscope system. Alternatively or additionally, the processing module may be configured to control a release of the one or more brakes based on the information about the balance of the surgical microscope system.

A stereo microscope includes a stand, two optical image acquisition units configured to connect to the stand to capture a stereoscopic image, which define an imaging plane using two optical axes of the image acquisition units, a pair of video glasses including two optical image reproduction units, each having an optical axis and a display for reproducing an image, which together define an image plane, wherein the optical image reproduction units are arranged to produce a stereoscopic image impression, and two optical axes of the optical image reproduction units define an image reproduction plane, a detection device configured to determine spatial orientation of the video glasses, the image reproduction plane, the image plane and the imaging plane, and a control unit configured to pivot the stand so that the intersection lines of the image plane and the imaging plane on the image reproduction plane are made parallel. Methods are also disclosed.

A medical observation apparatus including: an arm including a plurality of links connected to each other via a joint, the arm having at least three or more degrees of freedom implemented by a rotation operation about a rotation axis; an imaging device supported by the arm; and an arm controller that controls an operation of the arm. When a posture of the arm is in a predetermined state, and when a predetermined input for moving the arm about a rotation axis orthogonal to a second axis that is a second rotation axis from a side of the arm on which the imaging device is supported and a third axis that is a third rotation axis from the side of the arm on which the imaging device is supported is detected, the arm controller makes one of the links corresponding to the third axis rotate about the third axis.

The present disclosure relates to an optical observation device which is controlled in a sterility preserving manner, and to a corresponding controlling program and/or program storage medium. The optical observation device includes a main structure having at least one optical camera, a support structure adapted to variably position the main structure, and a control unit that receives a sequence of images from the at least one optical camera, searches a current image from the sequence of images for a trackable object, tracks the trackable object shown in the sequence of images subsequent to the current image; and controls adjustable properties of AR-content superimposed with the sequence of images in accordance with a motion of the trackable object, wherein the adjustable properties of the AR-content include a location, orientation, and/or size of the AR-content with respect to the sequence of images.

The present application relates to an optical observation device which is controlled in a sterility preserving manner, and to a corresponding controlling program and/or program storage medium. The optical observation device includes a main structure having at least one optical camera, a motorized support for positioning the main structure, and a control unit that receives a sequence of images from the at least one optical camera, searches a current image from the sequence of images for a trackable object, tracks the trackable object shown in the sequence of images subsequent to the current image, and controls the motorized support structure.

Examples relate to an optical imaging system, and to a corresponding apparatus, method and computer program for an optical imaging system. The optical imaging system comprises one or more information sources for providing information about a current orientation of the optical imaging system towards at least a part of an object of interest. The optical imaging system comprises one or more output modules for providing guidance information for a user of the optical imaging system. The optical imaging system comprises a processing module configured to determine information on a desired orientation of the optical imaging system towards at least a part of the object of interest. The processing module is configured to control the one or more output modules to provide the guidance information for the user of the optical imaging system based on a mismatch between the desired orientation of the optical imaging system towards at least the part of the object of interest and the current orientation of the optical imaging system towards at least the part of the object of interest.

A surgical microscope system includes a surgical microscope. In the surgical microscope, variable power optical systems are arranged horizontally to fold optical paths, thereby reducing a vertical size between eyepieces of the surgical microscope and a lower end of the same and expanding a working space under the surgical microscope. A camera is attached to an upper part of the surgical microscope to free a side face of the surgical microscope so that an accessory such as a fluorescent camera is attached to the side face.

An adjustable dual-lens device for 3D stereoscopic surgical microscopes has an outer casing, an image set, and an adjusting set. The image set is mounted in the outer casing and has two lenses. The lenses are pivotally mounted in the outer casing at a spaced interval. The adjusting set is mounted in the outer casing and has two adjusting units. Each adjusting unit has a driving motor, a cam, and a limiting element. The driving motor is mounted in the outer casing adjacent to one of the lenses and has a driving shaft. The cam is eccentrically mounted around the driving shaft and is pressed against the lens that is adjacent to the driving motor. The limiting element is connected to the outer casing and the corresponding lens to enable the corresponding lens to press against the cam.

A carrier arm joint device for a carrier arm of a stand device for arranging in the operating room and for displacing a medical device held on the carrier arm is configured for setting a payload corresponding to a weight of the medical device to be taken up by the carrier arm. The device includes at least one pivot axis for mounting at least one strut of the carrier arm, respectively; and a support axis for supporting a lever configured to transmit forces holding the carrier arm between the strut and the carrier arm joint device A distance between the axes is adjustable within an adjustment range in order to set the payload; the size and/or the extent of the adjustment range is independent of the position of the pivot axis. It is possible to maximize the adjustment range and therefore the payload spectrum in a comparatively compact and structurally rigid joint. A carrier system and a stand device can include at least one such carrier arm joint device.