Abstract: An ophthalmological measuring system, for obtaining biometric data of an eye, provided with the necessary calibration and check devices for monitoring the functionality and the calibration status. The ophthalmological measuring system includes an illumination source for illuminating an eye with light and with a sensor for recording and analyzing back-scattered or reflected light components and a controller. At least one calibration and check system integrated in the ophthalmological measuring system for monitoring the functional and calibration status is provided. A device is also provided which houses the calibration and test structures and which reads off the individual physical data therefrom by an interface. The ophthalmological measuring system is in particular provided for determining biometrical data but can also be used for ophthalmological, dermatological or other devices which require calibration and/or functional checking at regular intervals.

Abstract: A spectrometer is described, especially for an optical coherence tomograph for detecting parameters of the human eye, with said spectrometer having an input for measurement radiation to be analyzed, fanning the measurement radiation spectrally out along a direction in a fan and guiding it onto a detector that extends along the direction and comprises a plurality of detector pixels that are sensitive to the measurement radiation, with the spectrometer having an adjusting element which can be adjusted in a controlled manner to adjust the relative position of the fan and the detector, thereby optimizing the incidence position of the fan on the detector, in which it is provided that the detector has at least two superimposed, adjacent pixel lines, and a control device is provided which reads out the superimposed pixels of a plurality of pixel lines in a combined manner for a spectral analysis of the measurement radiation in a pixel binning and evaluates signal differences between superimposed pixels to control th

Abstract: An ophthalmological measuring system, for obtaining biometric data of an eye, provided with the necessary calibration and check devices for monitoring the functionality and the calibration status. The ophthalmological measuring system includes an illumination source for illuminating an eye with light and with a sensor for recording and analyzing back-scattered or reflected light components and a controller. At least one calibration and check system integrated in the ophthalmological measuring system for monitoring the functional and calibration status is provided. A device is also provided which houses the calibration and test structures and which reads off the individual physical data therefrom by an interface. The ophthalmological measuring system is in particular provided for determining biometrical data but can also be used for ophthalmological, dermatological or other devices which require calibration and/or functional checking at regular intervals.

Abstract: The invention is directed to an arrangement and a method for measuring the anterior segment of the eye using interferometric means. The eye is illuminated by a convergent beam bundle and aligned with the optical axis of the measuring device by generating directional stimuli and accommodation stimuli by means of a display which is mirrored into the beam path.

Abstract: A spectrometer is described, especially for an optical coherence tomograph (1) for detecting parameters of the human eye, with said spectrometer having an input for measurement radiation to be analyzed, fanning the measurement radiation spectrally out along a direction in a fan and guiding it onto a detector that extends along the direction and comprises a plurality of detector pixels that are sensitive to the measurement radiation, with the spectrometer (2) having an adjusting element (5) which can be adjusted in a controlled manner to adjust the relative position of the fan and the detector (8), thereby optimizing the incidence position (F) of the fan on the detector (8), in which it is provided that the detector (8) has at least two superimposed, adjacent pixel lines, and a control device (9) is provided which reads out the superimposed pixels of a plurality of pixel lines in a combined manner for a spectral analysis of the measurement radiation in a pixel binning and evaluates signal differences between s

Abstract: The invention is directed to an arrangement and a method for measuring the anterior segment of the eye using interferometric means. The eye is illuminated by a convergent beam bundle and aligned with the optical axis of the measuring device by generating directional stimuli and accommodation stimuli by means of a display which is mirrored into the beam path.

Abstract: A camera adapter for optical devices, in particular microscopes. The present solution includes a camera adapter which enables any video cameras and photographic cameras to connect to an existing image out-coupling system, e.g., the beam splitter of a microscope. The adapter can also be used for stereo microscopes. The camera adapter is arranged between the image out-coupling element and the camera. Its housing has two connection pieces. The microscope-side connection piece has a quick-change device and the camera-side connection piece has a filter thread. The technical solution provides a camera adapter for connecting digital cameras to a microscope. By using intermediate rings, the camera adapter is suitable for different cameras and facilitates exchange of cameras. The camera can be positioned in such a way that the observer can view the object through the eyepiece as well as on the camera monitor without substantially changing his/her sitting position.

Abstract: The invention is directed to an arrangement and a method for measuring the anterior segment of the eye using interferometric means. The eye is illuminated by a convergent beam bundle and aligned with the optical axis of the measuring device by generating directional stimuli and accommodation stimuli by means of a display which is mirrored into the beam path.

Abstract: The invention is directed to an arrangement and a method for measuring the anterior segment of the eye using interferometric means. The eye is illuminated by a convergent beam bundle and aligned with the optical axis of the measuring device by generating directional stimuli and accommodation stimuli by means of a display which is mirrored into the beam path.

Abstract: A camera adapter for optical devices, in particular microscopes. The present solution is directed to a camera adapter which makes it possible to connect any video cameras and photographic cameras to an existing image out-coupling system, e.g., the beam splitter of a microscope. The adapter can also be used for stereo microscopes and in particular for ophthalmic microscopes. The camera adapter is arranged between the image out-coupling element and the camera. Its housing has two connection pieces. The microscope-side connection piece has a quick-change device and the camera-side connection piece has a filter thread. The technical solution provides a camera adapter for connecting digital cameras, preferably having a monitor at the back of the housing, to a microscope, particularly an ophthalmic microscope. By using intermediate rings, the camera adapter is suitable for different cameras and facilitates exchange of cameras.

Abstract: An adapter for connecting and releasably and rigidly positioning a laser link on the housing of different slit lamp microscopes comprising a base, a fastening device on one end for fastening to a housing of a slit lamp microscope, a coupling device for coupling the laser link to the housing of the slit lamp microscope in a releasable and rigid manner, the coupling device for complementary engagement with a coupling device on the laser link.

Abstract: An adapter is disclosed for ophthalmologic equipment for the defined connection and positioning of a laser link on the housing of different slit lamp microscopes . The adapter comprises a base body, on the one end of which a fastening device is provided for fastening it to the housing of a slit lamp microscope in a manner that is positionally aligned, releasable and has no play, and on the other end of which contiguous to the laser link a first device of coupling or coupling elements and/or position securing elements are provided for coupling the laser link to the housing of a slit lamp microscope in a manner that is positionally aligned, releasable and has no play. This first coupling device can be engaged in a rigid operative connection with a matching complementary second coupling device of the laser link.

Abstract: For a separating roll, which finds application on an open end spinning machine, the proposal is made that a spiral trim wire be preformed and precoated before the trim wire is installed upon the circumference of the roll. In this way, separating rolls of the most varying materials may be employed since the rolls themselves need not undergo the coating process. Further, the trim wire may be preformed into a spiral before fitting on the separating roll. Moreover, a process for the production of the trim wire is presented. During the process of coating, the preformed spiral windings are held at an axial distance from one another.

Abstract: The present invention relates to a device for the conveying of fibers from an opener roller (31) installed in a fixed opener roller housing (30) to the collection surface (43) of a spinning rotor (4) of an open-end spinning device (1). It is provided with a rotor lid mounted on a swivel pin which receives a fiber feeding channel (6). The fiber feeding channel (6) can be brought into contact with a first contact surface (62) surrounding its inlet opening (60) against a second contact surface (35) located on the opener roller housing. It extends until directly in front of the collection surface of the spinning rotor (4). A lid extension extends through an opening in the spinning rotor (4) into the spinning rotor. In the lid extension the fiber feeding channel (6) lets out into the spinning rotor (4). The contact surfaces are essentially tangential to the circumferential surface of the opener roller and parallel to the opening of the spinning rotor or are inclined towards the opening of the spinning rotor.

Abstract: With channels for the conveying of fibers, fiber slivers or yarns on spinning machines, problems are encountered in their manufacture. The channels must be made with a certain inside contour, where at the same time the quality of the surface inside the channel must be very good. The high surface quality is required in order to ensure trouble-free conveying. A channel is therefore proposed which is made as a tubular component, consisting of a metallic material and which has been produced by forming its interior by a medium under pressure. It is proposed for an open-end rotor spinning device to form the conveying channel separately from the other components of the lid of the rotor housing and to insert the channel into the lid. It is proposed in that case to use a channel according to the design shown above.

Abstract: In an open-end spinning device a yarn draw-off nozzle suitable to ensure constant spinning conditions even at very high rotational speeds is provided. This is achieved in that the yarn draw-off nozzle is designed so as to be especially capable of heat dissipation and thus being capable of preventing a heat accumulation in the area of the yarn draw-off nozzle thanks to its high capability of heat dissipation.

Abstract: An opening roll for an open-end spinning device upon which clothing is carried. The opening roll includes a unitary member that has enlarged surfaces provided on circumferentially spaced ribs extending between a centrally located hub and a ring shaped concentric surface upon which pressure can be applied for ejecting the unitary member from a mold and for permitting drilling and filling with material for balancing.

Abstract: A fuel injection pump for internal combustion engines which has at least one pumping element inserted in a reception bore of a pump housing made of light metal. The pumping element substantially comprises a cylinder sleeve, in the cylinder bore of which a pump piston is slidably guided, and a pressure valve. The pump piston has at least one oblique control edge and is rotatable in order to vary the supply quantity. The valve body of the pressure valve is disposed in an extension of the cylinder bore. The cylinder sleeve and the pressure valve are tightly fastened into the housing by means of a screw nipple. The screw nipple is threaded into a steel plate, which is tightly fastened against the upper end face of the pump housing by means of screws.

Abstract: The chiplessly formed open end spinning rotor (1) has, in the region of its collecting groove (11), a surface which has not been contacted by shaping tools. To produce it, a pot (3) is first made by stretching and stamping of flat material. This is then secured in its radial position independently of shaping tools. The peripheral wall of the pot (3), in the region between the later collecting groove (11) and the open edge of the pot (3), is upset inward by any optional kind of plastic deformation and the region later to be the collecting groove (11) by unsupported plastic deformation ["against air"].

Abstract: A fuel injection pump for internal combustion engines having control slides that are both axially displaceable and rotatable on the pump piston via a governor rod for controlling the injection quantity and the injection onset. A slit hub is releasably clamped on the governor rod with a driver arm, the hub being arranged to engage the control slide between two working faces and the hub has a driver recess for the rotational adjustment of the control slide. The driver recess is engaged by a tang joined with the control slide.