Abstract: Disclosed is a laser device for machining material, comprising a laser beam source which supplies pulsed laser radiation, and a variable deflection unit that introduces said laser radiation into the material at different, selectable points so as to create optical breakthroughs. The inventive laser device further comprises a pulse-selecting apparatus which modifies selected laser pulses of the pulsed laser radiation regarding at least one optical parameter in such a way that no more optical breakthroughs can be created using the modified laser pulses.

Abstract: The invention relates to a method for forming curved cuts in a transparent material, in particular in the cornea, by the creation of optical perforations in said material using laser radiation that is focused in the material. The focal point is displaced three-dimensionally to form the cut by lining up the optical perforations. The focal point is displaced in a first spatial direction by a displaceable lens and said focal directions, in such a way that it follows the contours of the cut, which lie on a plane that is substantially perpendicular to the first spatial direction.

Abstract: An adapter for coupling a laser processing device to an object, said adapter having a central region which can be moved into the beam path of the laser processing device, an illumination beam path through which illumination radiation can be guided for illumination of an object field which can be covered by the central region, and a peripheral region located outside the central region and by which the adapter can be mounted on the object and/or on the laser processing device, wherein the illumination beam path extends in the peripheral region and guides illumination radiation, coupled into the peripheral region, to the object field direct and/or via the central region.

Abstract: What is described is an adapter for mechanically coupling a laser processing device to an object, said adapter comprising having a central region which can be moved into the beam path of the laser processing device, which beam path extends up to the object along an optical axis, and a peripheral region located outside the central region, said adapter being fixable to the laser processing device on the one hand and being provided so as to contact the object with its central region on the other hand, wherein fixing means are provided at the peripheral region, said means allowing the adapter to be releasably fixed to a receiving part of the laser processing device such that, upon application of a determined pulling force along the optical axis, the fixing means are removable from said receiving part.

Abstract: The aim of the invention is to machine a material by application of non-linear radiation. The aim is achieved by modifying the laser radiation emitted by a laser beam source with the aid of a polarization modulator in such a way that laser radiation focused into the material is polarized in a linear fashion, the direction of polarization varying across the cross section of the beam.

Abstract: A method of forming a cut which encloses a partial volume within a transparent material, by generating optical breakthroughs in the material by means of laser radiation focused into the material along an optical axis in which the focal point is three-dimensionally adjusted so as to form the cut by serial arrangement of the optical breakthroughs, wherein the focal point is adjusted along a spatial spiral, which is located in the cut and extends along a main axis that is at substantially right angles to the optical axis.

Abstract: A device for determining a movement of an eye includes an illumination unit by which optical radiation can be generated and emitted as an illumination ray bundle for illumination of at least one area of the cornea of the eye, a distance-determining unit, by which the illumination ray bundle returned as a detection ray bundle by the cornea can be received in a temporally resolved manner. A distance signal corresponding to a distance of the cornea from a reference plane can be generated using the received optical radiation of the detection ray bundle the reference plane is defined relative to the distance-determining unit, and an evaluating unit, by which a position or movement signal corresponding to a position or movement of the eye can be generated using the distance signal.

Abstract: The invention relates to a method for forming curved sections in a transparent material, especially in a cornea, by producing optical breaks at various points in the material by means of pulsed laser beams focused into the material. The laser beam is deviated in a two-dimensional manner from a deviation point in order to form the section by arranging the optical breaks in a sequence. The two-dimensional deviation occurs such that the areas of the optical opening along a curve, whereon the optical openings are arranged in a sequence, are arranged at a distance in relation to the deviation point according to an angle function which is not linear and which is adapted to the curvature of the section. The areas along the curve adjacent to optical openings inside a specific tolerance range are arranged at an even distance.

Abstract: The invention relates to a device for measuring an optical penetration that is triggered in a tissue underneath the tissue surface by means of therapeutic laser radiation which a laser-surgical device concentrates in a treatment focus located in said tissue. The inventive device is provided with a detection beam path comprising a lens system which couples radiation emanating from the tissue underneath the tissue surface into the detection beam path. A detector device generating a detection signal which indicates the spatial dimension and/or position of the optical penetration in the issue is arranged downstream of the detection beam path.

Abstract: The invention relates to a laser comprising a cavity which is defined by an end mirror and a decoupling mirror. A fibre comprising an active core is arranged in said cavity and can be excited by pump radiation until it has a multimodal laser activity, in such a way that a plurality of transversal modes form in the cavity. A mixture of modes is present in the fibre, and the decoupling mirror comprises reflection properties for laser and pump radiation, said properties varying according to the location, such that it reflects the pump radiation and the laser radiation which does not leave the active core of the fibre, and significantly decouples low transversal modes.

Abstract: In a device for detecting eye movements, used in an eye-surgical instrument, which deflects a pulsed treatment laser beam over the cornea in order to form cut areas in the cornea of the eye, and thus forms a sequence of optical breakthroughs in or on the cornea, wherein an optical unit is provided for monitoring the cornea, it is provided that the optical unit monitors the position of at least one optical breakthrough generated in the cornea and recognizes an eye movement on the basis of a migration movement of the monitored optical breakthrough.

Abstract: A projection device for projecting a multi-colored image including a light source unit emitting light of different colors, a light modulator unit, illumination optics arranged between the light source unit and the light modulator unit and directing light from the light source unit onto the light modulator unit, projection optics arranged following the light modulator unit. The projection optics project an image generated by means of the light modulator unit onto a projection surface and the light source unit includes light emitting diodes as the light-generating elements.

Abstract: In order to enable adjustment of the output wavelength of a laser, there is provided a laser comprising a laser-active material (100), which is excitable at not less than two laser wavelengths to emit laser beams with a gain, said gain being different at the two laser wavelengths, a resonator comprising two end mirrors (102, 110; 130, 132), in which resonator the laser-active material (100) is arranged and which resonator is adapted, with respect to its resonance conditions, to the laser wavelength having the lower gain, wherein one of said end mirrors (110, 132) is partially transmissive for radiation at said laser wavelengths, an output mirror (116), which is partially transmissive for said laser wavelengths and is arranged following the partially transmissive end mirror (110, 132) in the optical path, an optical element (112, 120), which is arranged between the partially transmissive end mirror (110, 132) and the output mirror (116), on which radiation is incident at said laser wavelengths and which has an

Abstract: The invention is directed to a laser scanning ophthalmoscope for viewing the ocular fundus of the eye of a patient. A laser source generates a laser beam and a first scanner imparts an oscillatory deflection to the laser beam in a first direction. A second scanner imparts an oscillatory deflection to the laser beam in a second direction and transmits the oscillating laser beam toward the ocular fundus. At least a portion of the light of the laser beam is reflected from the ocular fundus and a detector detects the reflected light. A display displays an image defined by the light reflected from the ocular fundus and a control is connected to the display for selecting a sectional image of the image and the sectional image corresponds to a subregion of the ocular fundus. A drive motor pivotally moves at least one of the first and second scanners and a drive unit controls the drive motor. An interface connects the control to the drive unit.