Abstract: The present invention relates to a method for operating an ophthalmological analysis system having a slit projection unit for slit illumination of the eye and a Scheimpflug camera for taking digitized sectional images of the eye, slit projection unit and Scheimpflug camera being mounted so that they may pivot jointly rotating around an axis which is essentially coincident with the optical axis of the eye. In a first position of slit projection unit and Scheimpflug camera, a recording of a sectional image of the eye is made and stored as the first image data set. Subsequently, slit projection unit and Scheimpflug camera are pivoted rotating at least once and fixed in this particular subsequent (second, third, fourth, . . . ) position. In the particular subsequent (second, third, fourth, . . . ) position of slit projection unit and Scheimpflug camera, a recording of a sectional image of the eye is made and stored as the subsequent (second, third, fourth, . . . ) image data set.

Abstract: The invention relates to a measuring device (01) for measuring the refraction properties of optical lenses (07), especially spectacle glasses, comprising a measuring light grid (20) for producing a plurality of light beams (16) which are deflected by the lens (07) as a result of refraction of light, and comprising a measuring light detector (12) on which the deflected light beams are projected and are there recorded electronically, and comprising an evaluation device in which the refraction properties of the lens (07) are determined from the measurement signals of the measuring light detector (12), wherein an additional measuring system (14, 20) for electronic measurement of the geometry of the front lens surface (18) and/or the rear lens surface (19) is provided in the device, wherein the measurement result of the additional measuring system (14) is included in the determination of the refraction properties of the lens (07) in the evaluation device.

Abstract: The invention relates to an ophthalmic analysis system (01) for measuring the intraocular pressure in an eye (02) comprising a) an actuating device (04) for contact-free deformation of the cornea (03), b) an observation system (20, 21) with which the deformation of the cornea can be observed and recorded, c) an analysis device (24) with which the intraocular pressure can be deduced from the image information of the observation system (20, 21), wherein split images of at least parts of the undeformed and/or deformed cornea (03) can be recorded using the observation system (20, 21).

Abstract: The invention relates to a measuring device (01) for measuring the refraction properties of optical lenses (07), especially spectacle glasses, comprising a measuring light grid (20) for producing a plurality of light beams (16) which are deflected by the lens (07) as a result of refraction of light, and comprising a measuring light detector (12) on which the deflected light beams are projected and are there recorded electronically, and comprising an evaluation device in which the refraction properties of the lens (07) are determined from the measurement signals of the measuring light detector (12), wherein a screen (10) comprising a plurality of light passage openings (23, 24) is arranged between the lens (07) to be studied and the measuring light detector (12), wherein the light beam (16) produced by the measuring light grid (20) and deflected at the lens (07) by refection of light is projected through the various light passage openings (23, 24) of the screen (10) along separate ray paths onto the measuring

Abstract: A device for projecting a light beam on an object includes a light source for generating the light beam and projection optics for transmitting the light beam from the light source to the object. At least one prism with at least two essentially plane-parallel surfaces is arranged in the beam path of the light beam between the light source and the object as part of the projection optics. The prism is movably supported and can be driven by a drive unit in such a way that the light beam is shifted in a parallel fashion by an amount (X) that depends on the position of the prism when the light beam passes through the plane-parallel surfaces of the prism.

Abstract: This invention relates to an ophthalmologic analysis system for measuring the thickness of the corneal tissue on an eye to be examined having a projection device with which defined regions of the corneal tissue are illuminated, whereby the projection device cooperates with an observation system by means of which the illuminated regions of the corneal tissue can be observed and recorded at an angle in relation to the beam path of the projection device such that the thickness of the corneal tissue can be derived in an analysis device from the image information of the observation system.

Abstract: The invention pertains to a device for projecting a light beam on an object that comprises a light source for generating the light beam and projection optics for transmitting the light beam from the light source to the object. At least one prism with at least two essentially plane-parallel surfaces is arranged in the beam path of the light beam between the light source and the object as part of the projection optics, wherein the prism is movably supported and can be driven by means of a drive unit in such a way that the light beam is shifted in a parallel fashion by an amount (X) that depends on the position of the prism when it passes through the plane-parallel surfaces of the prism.

Abstract: This invention relates to an ophthalmic refractometer (13) for objective determination of the refractive power of an eye (A) comprising an optometer system for imaging a test mark on the retina of the eye (A) and comprising an observation system (15) for observation of the test mark (18) imaged on the retina, whereby the optometer system and the observation system can be adjusted in mutual synchronization in relation to a reference setting, and a refractive power parameter of the eye (A) can be determined from the difference between the setting at which the test mark (18) is imaged on the retina at least partially with sharp contours and the reference setting.

Abstract: The invention relates to a slit projector comprising a light source, a slit diaphragm arranged in front of the light source, and a lens system arranged in front of the slit diaphragm. Such a slit projector is used in particular in slit lamps. The front chamber of the eye can be illuminated with such slit projectors in order to be able, for example, to take pictures of the slit image of the front chamber of the eye. High performance light sources are needed for this. These are presently not available at acceptable prices. Therefore, the purpose exists to improve a slit projector in such a manner that same presents a slit of the needed brightness for viewing the eye and in particular for slit image photography. This is attained in such a manner that the light source consists of several light diodes 1 arranged essentially in a longitudinal direction of the slit, namely in the plane of the projected slit.

Abstract: The invention relates to a device for the examination of an eye using a Scheimpflug camera and a slit light projector for slit images of an eye. The Scheimpflug camera and the slit light projector are carried by a stand, whereby the slit light projector and the scheimpflug camera are arranged rotatably about a common axis coinciding essentially with the optic axis of the eye. Such a device is improved so that without interruptions and returns of the Scheimpflug camera to an initial position, the eye can be scanned multiply by means of the device. This is achieved by the slit light projector and the Scheimpflug camera being freely rotatable about the axis through more than 360°, and by a voltage supply to both the Scheimpflug camera and the slit light projector occurring through a transmitter.

Abstract: A method and device for producing multicolored patterns can test the color vision or the reaction of a viewer. The patterns are produced by at least one switchable light source and at least two differently colored transparent color segments, which are alternately moved into the beam path of the light source. The device is a technically simple and inexpensive method to create multicolored patterns. In this manner, the light source or the light sources shine through each color segment of the color screen at a time interval predetermined by a control so that individual colors are produced. The time intervals of the individual colors follow one another so quickly that a color-merging frequency is reached or exceeded, and the individual colors of each individual light source merge into a mixed color.

Abstract: A device for measuring a spherical surface, in particular the cornea of a human eye, can be made compact and not liable to cause heating when in use by the use as the requisite light sources for producing a pattern on the said surface of a system of light-emitting diodes whose emission is supported by a reflector behind a mask which forms the pattern. The device can also be used to determine the reaction of the pupil to glare, by reflecting an external light source into the beam path.

Abstract: A perimetric structure and a testing process having a digitalized camera mechanism for storing the image and evaluating with a visual field testing device, in which the individual testing points of varying size and varying contrast are sequentially offered to the patient for viewing. The testing points can be projected in a sphere or on a screen or can be offered on a monitor. The visual field is tested by registration of eye movements (saccades), which the person being tested carries out at presented testing points, as soon as he/she can recognize them.

Abstract: A device for examining the visual field of the human eye which includes a cup-shaped screen, onto the base of which one or several test marks are projected, and usable for both kinetic and also static perimetry testing and offers test marks of a uniform size and brightness over the entire testing area. The screen consists for this purpose of a transparent material, whereby the test marks are projected from the back side onto the screen approximately parallel to the surface normal. The test mark is thereby arranged to move parallel and relative to the back side of the screen, so that each test mark is moved at an equidistant spacing from the screen.

Abstract: The invention relates to an apparatus and a method for finding blind spots in the eye of a person tested. In examinations carried out to date, it was necessary to scan the entire image field of the person tested. According to the invention an image with a plurality of image points lying closely side-by-side is offered to the person tested, the variations in the brightness of which image points are presented at a high frequency, and additionally, a fixation mark at a defined place. The apparatus and the method can be used in all types of examinations of the field of vision.