Abstract: A securing structure for an optical piece is disclosed and which comprises: a hub portion; a surrounding portion connected to the hub portion; a plurality of recess structures formed or otherwise provided in at least one of the hub portion and the surrounding portion and which are at least partially open on at least one side; and a rib structure that at least partially separates the plurality of recess structures, The structure is capable of use with an apparatus for securing and clamping optical lenses (e.g., spectacle lenses) requiring edge-machining.

Abstract: A polishing disc for a tool for the fine machining of optically active surfaces, particularly on spectacle lenses as workpieces, comprises a main body which has a center axis and on which there is fixed an intermediate layer which is softer than the main body and on which a polishing agent carrier rests. The intermediate layer has, with respect to the center axis, a radial inner region of substantially constant axial thickness and an adjoining radial outer region. The latter is formed or is fixed to the main body in a particular way so as to prevent the edge of the polishing disc from being imprinted on the machined surface of the workpiece in the form of very fine, scratch-like microstructures. Also proposed is a simple method which can be used to produce such a polishing disc.

Abstract: The invention relates to a deblocking device and an associated method for deblocking optical workpieces, for example, eyeglass lenses. The deblocking device has a first moving apparatus for rotating a workpiece blocked on a block piece about a workpiece rotational axis, a nozzle assembly having a nozzle for discharging a high-pressure pressure medium jet in a direction substantially perpendicular to the workpiece rotational axis onto an edge area between the workpiece and block piece, and a second moving apparatus for generating a relative motion between the workpiece and the nozzle along the workpiece rotational axis.

Abstract: A machine for machining workpieces, for example plastic spectacle lenses, has a workpiece spindle which rotates the workpiece about a workpiece rotation axis, and a fast tool arrangement which moves a turning tool in the direction to and from the workpiece, wherein the workpiece spindle and the fast tool arrangement can moreover be moved relative to one another in a direction transverse to the workpiece rotation axis. A tool holder is connected to the fast tool arrangement and carries the turning tool. An engraving tool is spaced from the workpiece rotation axis and has an essentially point-shaped end facing towards the workpiece. The engraving tool can be moved in the direction of the workpiece and away therefrom in a highly dynamic manner via the tool holder, so that a marking can be produced on the workpiece in particular by a needling engagement of the engraving tool with the workpiece.

Abstract: A fast tool arrangement, in particular for lathes for machining optical workpieces, has a carriage, which for linear reciprocating movements is guided in a housing on bearing elements stationary in relation to the housing, and which at its outer end carries a holder for a tool or workpiece and at its inner end is actively connected with a moving coil drive. The carriage has the cross-section of a T-profile with plane-parallel flange and web faces wherein the bearing elements are arranged in pairs on both sides of the profile web and the profile flange.

Abstract: A tool for polishing and fine-grinding optically active surfaces in precision optics has a main body which can be attached in a rotationally fixed manner to a tool spindle of a machining machine. A guide element is arranged concentrically in the main body and is mounted such that it can be displaced axially therein. A machining disk is replaceably attached to the outer end of the guide element. The main body is rigidly connected in a rotationally fixed manner, over the full displacement travel, to the guide element mounted such that it can be displaced axially therein, and in that the machining disk is rigidly fixed in a non-tiltable manner on the guide element.

Abstract: The invention discloses a device (10) for clamping particularly an eye glass lens blocked on a block piece for processing and/or coating said eye glass lens, comprising a receiving space (34) having a center line (M) for a clamping section of the block piece, and a plurality of clamping surfaces (36) provided in a boundary region of the receiving space, which may optionally be engaged in the clamping section of the block piece in order to clamp the block piece. In order to avoid excessive deformation of the clamped block piece, the clamping surfaces are positioned opposite of each other in pairs at a radial distance to the center line and can be displaced optionally toward or away from each other by a clamping piece (38) in order to clamp the clamping section of the block piece by way of clamping forces (F), which are substantially oriented in a tangential direction at a radial distance to the center line, or in order to release the block piece.

Abstract: A machine for processing optical work pieces having a work piece spindle for the work piece driving rotationally about a work piece rotation axis. At least one processing unit has a tool that can machine the work piece and an adjusting mechanism causes a relative movement between the work piece spindle and tool to selectively enable loading, unloading and processing of the work piece. The adjusting mechanism has a linear drive unit and a swivel drive unit that are stacked on each other to rotate the swivel drive unit and the work piece spindle about a swivel axis that is perpendicular to the work piece rotation axis, and has the linear drive unit move the work piece spindle along a linear axis that can be perpendicular to one of the swivel axis and the work piece rotation axis and parallel to or aligned with the other axis.

Abstract: A method for manufacturing spectacle lenses includes the steps of: providing a lets blank having a first face that possesses a final curvature and is coated with an antireflection coating as an outer layer, a second face, and an edge; blocking with a blocking material the lens blank with its first face on a block piece; processing the blocked lens blank on the second face and to obtain a processed lens; deblocking the processed lens from the block piece; and applying on top of the first face antireflection coating of the processed lens a top coating selected from at least one of hydrophobic, oleophobic or dust repelling coatings.

Abstract: A device (10) for finish-machining of optically effective surfaces of workpieces, in particular spectacle lenses (L, L?), is disclosed, comprising at least one workpiece spindle (30, 30?), to which a workpiece can be clamped, at least one tool spindle (28, 28?), which is movable relative to the workpiece spindle and at which a tool (46) for machining the workpiece can be mounted, and a loading system (22) for bringing a workpiece to and taking it away from the workpiece spindle and bringing a tool to and taking it away from the tool spindle. The loading system comprises a loading head (82), which is separate from workpiece spindle and tool spindle, with at least one loading section (102, 102?) equipped with at least one mount (106, 106?) for a workpiece and at least one mount (104, 104?) for a tool, so that both the tool and the workpiece can be loaded in a time-saving single loading process.

Abstract: A device for blocking workpieces for the processing and/or coating thereof, has a support surface for positioning the workpiece to be blocked, a blocking station in which the workpiece can be blocked on a blocking piece by a temporarily deformable blocking material, and a transport device which has a retaining head for the workpiece and by which a relative movement can be created between the workpiece being retained at the retaining head, and the support surface and the blocking station. The transport device has at least four position-controlled movement axes, by which to position the workpiece in a defined manner in consideration of the orientation and geometric information relative to a blocking piece located in the blocking station, and can be retained in the defined relative position to the blocking piece during blocking while leaving a blocking material accommodation gap between the workpiece and the blocking piece.

Abstract: A device for finish-machining of the optically effective surfaces of, in particular, spectacle lenses has a spindle shaft, which has a tool mount section and which is mounted in a spindle housing to be rotatable about a workpiece rotational axis (A). An electric rotary drive has a rotor and a stator by which the spindle shaft operatively connected with the rotor is drivable to rotate about the tool rotational axis. An adjusting device axially displaces the tool mount section with respect to the spindle housing in the direction of the tool rotational axis (linear movement Z). The rotor and the stator are arranged coaxially with the spindle shaft, wherein at least the rotor together with the spindle shaft is axially displaceable with respect to the spindle housing in the direction of the tool rotational axis by the adjusting device.

Abstract: An apparatus for the machining of optical workpieces of materials of non-brittle hardness, particularly of plastics material spectacles lenses, has a holder, which is operatively connected with an actuator for reciprocating movement, and a support, which is fixable to the holder and to which a cutting tip of monocrystalline diamond, which has an arcuate cutting edge, is fastened. In order to be able to use the cutting edge over its curve length to avoid of premature wear in the rotary machining, provision is made for a positioning device, by which the support is fixable in at least two different relative positions with respect to the holder to dispose substantially different circumferential sections of the cutting edge for the rotary machining.

Abstract: A process and apparatus for applying an optical coating to a substrate, wherein a transition layer 12, which is used to match mechanical properties of a substrate 10 to mechanical properties of a layer system 16 to be applied upon the transition layer 12, is deposited on a front surface 20 of the substrate 10. For this purpose, during a sputtering process carried out in a vacuum chamber 18, reaction products 14 are incorporated at least virtually exclusively in the transition layer 12 on the substrate. This prevents other surfaces of the vacuum chamber 18 and the rear side 34 of the substrate 10 from being contaminated with the reaction products 14 and/or their precursors.

Abstract: An apparatus for coating the surface of a lens includes a carousel having a central hub and a plurality of arms. A drive shaft is mounted to each arm, with a magnetic clutch and a lens holder being operatively attached to the drive shaft. The carousel is configured to be raised, rotated, and lowered into a series of workstations for processing the lens in a predetermined sequence. A workstation has associated therewith a spin drive attached to a reciprocating arm assembly. The spin drive includes a magnetic clutch which may be coupled to the magnetic clutch of any one of the arms on the carousel, such that a rotation generated by the spin drive is transferred to the drive shaft, and the lens holder. The arm assembly is capable of being extended and retracted to selectively engage and disengage the carousel.