Abstract: A cataract surgery microscopy system is provided which comprises a microscopy optics for producing an image of an object plane of the microscopy optics and a pattern generator for generating a pattern superimposed on the image, said pattern generator being provided to generate a circular pattern having an adjustable diameter.

Abstract: A camera adaptor (19) is provided for connecting a camera (21) to an interface (13) of a medical-optical observation instrument (1) with a parallel beam path. The interface (13) is situated in the parallel beam path (9a, 9b) of the medical-optical observation instrument (1). The camera adaptor (19) has an instrument connector part (41) for connection to the interface (13) of the medical-optical observation instrument (1) and a camera connector part (43, 143) for connection to a camera (21). The beam path (43) runs through the camera adaptor (19) along a linear optical axis. The camera adaptor (19) has an objective-lenses combination (47) with a total focal length between 40 mm and 120 mm. A lens with a positive partial focal length leading on the instrument side in the objective-lenses combination (47) and is followed, on the side toward the camera, by a lens with a negative partial focal length.

Abstract: An ophthalmic surgery system (1) for viewing and measuring optical characteristics of an eye (8), comprises optics (2), an electromechanic displacement mechanism (5), and a controller (3). The optics (2) comprises a first beam path (11) for viewing the eye (8), a second beam path (12) for probing the eye (8) with a probing beam, and a third beam path (13) for detecting a part of a probing beam reflected from the eye (8). The controller (3) is adapted to determine a position of a center of an iris of the eye (8) relative to an optical axis of the first beam path (11a), and to control an actuator of the electromechanic displacement mechanism (5) in order to reposition the second beam path (12) based on the determined position of the center of the iris relative to the optical axis (11a) of the first beam path (11).

Abstract: An aperture stop device is provided for use in a microscope with at least one adjustable observation parameter. The aperture stop device includes at least one aperture stop (50a, 50b) with an adjustable aperture, that is to say with an adjustable stop opening. The aperture stop (50a, 50b) is adapted to receive an aperture signal representative of an aperture to be adjusted. In addition the aperture stop device includes a control unit (52) for output of the aperture signal to the aperture stop (50a, 50b) in dependence at least on the respectively set value of the observation parameter of the microscope.

Abstract: An illumination system of a microscopy system comprises an actuator configured to change an angle of an illumination light beam and a mirror assembly, which is selectively positionable into the beam path of the illumination light beam. The mirror assembly may comprise an actuator configured to change an orientation of a mirror with respect to another mirror.

Abstract: A surgical microscope for observing an infrared fluorescence includes a camera system 25 having three chips, wherein infrared light emanating from an object is supplied to only one of the three camera chips via a dichroic beam splitter.

Abstract: A camera holder (3) is provided for fixing a camera (11) or a camcorder to an optical observation device. The holder (3) has a variable-length sleeve (13) with a first end configured to receive the camera objective and a second end configured to secure the sleeve (13) relative to the optical observation device. The holder (3) also has an adjusting device (19) fixed to the sleeve (13). The adjusting device (19) has a pin for connection with a stand mating thread of a camera (11) and is configured to compensate for an offset between the stand mating thread and the camera objective. The adjusting device (19) enables the camera (11) to be positioned with respect to the sleeve and the optical observation device.

Abstract: A system includes an optical system having two beam splitters (a dichroic beam splitter and a polarizing beam splitter), which are designed to provide three separate beam paths for observing an object. The dichroic beam splitter is designed to separate two beam paths depending on the wavelength of the light of the respective beam path. The polarizing beam splitter is designed such that two beam paths are separated depending on a direction of polarization of the light of the respective beam path. The measuring light is linearly polarized after having passed the polarizing beam splitter and may be influenced with respect to the state of polarization by a retarding plate. The returning measuring light incident on the polarizing beam splitter is linearly polarized and also polarized in such a direction that the returning measuring light is transported through the polarizing beam splitter towards the analyzing detector with a high efficiency.

Abstract: A load suspension stand includes a first stand member, a second stand member, a joint pivotably connecting the first with the second stand member, a cam plate rotatably fixed to the first stand member, a load transmission lever, an abutment pivotably supporting the load transmission lever at the second stand member, a load reservoir, acting on the second stand member and on the load transmission lever in order to exert a force F1 on the cam plate by means of the load transmission lever, and a drive for displacing the abutment relative to the load transmission lever.

Abstract: A method and an apparatus for displaying a part of a brain of a patient is provided. Laser Doppler images are acquired before and after a stimulation. The laser Doppler images comprise information about a blood motion or about a perfusion at the acquired part. Then, the blood motion images acquired before and after the stimulation are compared to identify areas in the brain of the patient which are related to the stimulation. The identified areas are displayed in dependence of topography data representing a topography of the brain.

Abstract: Disclosed is a microscope system (1) for sequential observation of different fluorescent dyes that are accumulated in a tissue located in an object plane (22). An illumination system (70) of the microscope system (1) for illuminating the object plane (22) with illumination radiation has at least two operating states. In one of the at least two operating states, the illumination radiation has a spectrum which includes an excitation band (A1) of a first fluorescent dye and, at the same time, is partly free from an excitation band (A2) of another fluorescent dye. An observation system (2) of the microscope system (1) for providing a first observation optical path (33) for optically imaging the object plane (22) has two different operating states as well.

Abstract: An ophthalmologic surgical work station has a microscope and a foot switch corresponding thereto. The microscope is connected to the foot switch via a console. The microscope and the foot switch are coarsely prepositioned and a change of the relative position between the microscope and the foot switch with respect to each other is only possible via a fine positioning.

Abstract: A surgical microscope (100) for ophthalmology includes a measuring unit (110) for determining at least one characteristic value of a patient eye (104). The measuring unit (110) is connected to a computer unit (120) which calculates a model of the patient eye (104) based on the determined characteristic variables. The surgical microscope also includes a display device for displaying the calculated model of the patient eye (104) or characteristic variables that are derived from the calculated model.

Abstract: This disclosure generally relates to medical systems and methods. In one aspect of the invention, a method includes determining a fluorescent light intensity at one or more points on each of multiple recorded images, and producing an image based on the determined fluorescent light intensity at the one or more points.

Abstract: A filter set for observing fluorescent radiation in biological tissue includes at least one illumination filter and at least one observation filter. The at least one illumination filter is arrangeable in an illumination system of an optical system. The at least one least one observation filter is arrangeable in an imaging system of the optical system.

Abstract: A surgical microscopy system having an illumination system is provided. The illumination system comprises a xenon gas discharge lamp and a spectral filter which is optionally positionable into an illumination beam path of the surgical microscopy system and removable from the same. The spectral filter substantially exhibits, in a wavelength range between 400 nm and 700 nm, a transmission increasing from about 0.12 to 1 having a gradient between 0.025/nm and 0.0035/nm, in particular 0.00293/nm. Thus, the illumination system is enabled to provide light having two different spectral characteristics which is advantageous in particular for imaging structures in the human eye scattering to a different degree.

Abstract: A surgical microscopy system is provided wherein an optical coherence tomography facility is integrated into a microscopy system. A beam of measuring light formed by collimating optics of an OCT system is deflected by a beam scanner, traverses imaging optics, and is reflected by a reflector such that the beam of measuring light traverses an objective lens of microscopy optics and is directed to an object region of the microscopy optics. A position of the beam of measuring light being incident on the reflector is substantially independent on a direction into which the beam of measuring light is deflected by the beam scanner. When traveling through the beam scanner, the beam of measuring light is comprised of a bundle of substantially parallel light rays.

Abstract: A microscopy system and method allow observing a fluorescent substance accumulated in a tissue. The tissue can be observed at a same time both with visible light and with fluorescent light. It is possible to observe a series of previously recorded fluorescent light images in superposition with the visible light images. An end of the series of images may be automatically determined. A thermal protective filter may be inserted into a beam path of an illuminating system at such automatically determined end of the series. Further, the fluorescent light image may be analyzed for identifying a coherent fluorescent portion thereof. A representation of a periphery line of the coherent portion may be generated, and depths profile data may be obtained only from the coherent portion. An illuminating light beam for exciting the fluorescence may be modulated for improving a contrast of fluorescent images.

Abstract: The invention relates to a stereoscopic optical system (1), comprising a first optical sub-system (2L) with a number of optical elements (31L, 32L, 33L, 34L, 35L, 36L, 37L, 38L, 39L) for providing a left beam path (4L) of the stereoscopic optical system (1), and a second optical sub-system (2R) with a number of optical elements (31R, 32R, 33R, 34R, 35R, 36R, 37R, 38R, 39R) for providing a right beam path (4R) of the stereoscopic optical system (1). At least one first optical partial element (38L) of the first optical sub-system (2L) has a first optical surface (O1), and at least one second optical partial element (38R) of the second optical sub-system (2R) has a second optical surface (O2). According to the invention, the first and the second optical surfaces (O1, O2) are partial surfaces of one common mathematical surface that is rotationally symmetrical about a common main axis (7) of the stereoscopic optical system (1).