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WO/2001/021352A1 |
An apparatus (10) for use in manufacturing an intraocular lens (IOL) from a lens blank. The apparatus (10) includes at least one lathe (12, 14) having a chuck (19, 23) with an opening (62, 72) and/or a milling machine having a milling ne...
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WO/2001/000907A1 |
The invention provides a means for making below 200 nm VUV optical microlithography lens elements and preforms therefor. The inventive methods include polishing a fluoride optical lithography crystal with cerium to a surface roughness le...
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WO/2000/066325A1 |
The invention relates to a holding device (10) for a spectacle glass (24), for introducing the spectacle glass into or removing it from a container and/or for placing the spectacle glass on or removing it from a spectacle glass holding s...
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WO/2000/059679A1 |
A production method comprising a step of marking in a region to be shaved off by lens shaping lens production information such as a shaping mark (31) indicating a region remaining after lens shaping on the surface of a spectacle lens (10...
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WO/2000/054089A1 |
The invention relates to an image transmission system for endoscopes and other periscopes, comprising at least one rod lens (2) and at least one other lens system (3). To provide a simple and economically configured image transmission sy...
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WO/2000/050200A2 |
A method for generating a virtual entity of an ophthalmic lens blank in a computer environment and for using this entity to monitor and control a lens generation process. The method comprises the steps of analysing an image of a lens bla...
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WO/2000/050201A1 |
The apparatus comprises a base having orthogonal horizontal longitudinal axis, horizontal transversal axis and vertical axis, and a tool spindle having a motor and a lens surfacing tool mounted on a rotatable arbour of the motor. The app...
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WO/2000/044527A2 |
A new technical advancement in the field of precision aluminum optics permits high quality optical polishing of aluminum monolith, which, in the field of optics, offers numerous benefits because of its machinability, lightweight, and low...
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WO/2000/040370A1 |
A method of polishing articles comprising soft acrylic materials is disclosed. The method includes a polishing step and a cleaning step. In the polishing step a receptacle is charged with polishing beads of various sizes, alumina, sodium...
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WO/2000/032353A2 |
A machine for abrading or polishing a workpiece (5) comprises a holding surface holding the workpiece, a head member (7) arranged along a rotation axis to rotate about the rotation axis, a working member (8) having a surface for abrading...
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WO/2000/013849A1 |
A method of lathing a lens, specially a contact lens, involves attaching the cylindrical blank (1) of lens material to a first block (2) of machineable plastic material, lathe cutting a desired first lens surface (6) in the cylindrical b...
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WO/2000/013853A1 |
An abrasive article is provided which comprises a backing; and at least one three-dimensional abrasive coating comprising diamond particles dispersed within a binder bonded to a surface of the backing, the binder comprising a cured binde...
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WO/2000/012261A1 |
The invention concerns a method for producing multifocal correction lenses from semi-finished lenses (1) having at least a first positioning marker $i(M), associated with a correction $i(A) called distant vision correction, and a second ...
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WO/2000/000324A1 |
The invention concerns an abrader device in particular for optical surfaces such as spectacle lenses comprising a support (1) and a membrane (2) with a top and a peripheral rim (3) integral with the support, and on the outer surface of w...
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WO/1999/067053A1 |
A two-piece lens block (10) allows for the rotation of an edged lens blank (5) in order to align the cylinder of the lens blank (5) correctly. The lens block (10) includes a substantially cylindrical base (12) having a first surface (13)...
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WO/1999/061226A1 |
A method for manufacturing cylindrical microlenses having exceptional optical properties and the lenses made according to the process are described. The method includes the steps of forming a glass preform (1) and grinding at least one f...
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WO/1999/059735A1 |
The invention relates to a method for electrically controlling a flow of material, wherein a single- or multi-component, essentially polymer-based material (1), such as plastics elastomer or the like, is charged electrically (I) and spra...
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WO/1999/060429A1 |
A precision optical element (62) is described, such as is used in thermal imaging systems in the infrared, manufactured by means of single point machining, with both of its surfaces having an aspheric form, with or without the addition o...
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WO/1999/052673A1 |
An installation for forming the edges of spectacle glasses, comprising a machining device (1) for forming a left spectacle glass, a machining device (2) for forming a right spectacle glass, a conveyor device (8) for untreated and finishe...
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WO/1999/039871A1 |
The present invention relates to a method for marking or drilling holes in glass lenses and to device for realising the same. According to this method, the position of the holes in a glass lens, in a model disc or in a support disc is me...
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WO/1999/038650A1 |
The invention pertains to an improved method, a lapping tool head (82) and a lens polishing apparatus for carrying out the method, for polishing ophthalmic lenses (26). The apparatus has a lapping tool head (82), a flexible membrane (134...
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WO/1999/033611A1 |
A precision high speed turning machine apparatus (10) is provided which performs a selected operation, such as shaping, polishing or probing/measuring on a workpiece (12) and in particular on a rotationally non-symmetric workpiece. The w...
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WO/1999/025521A1 |
The invention relates to special pliers for optical elements, especially eyeglass elements. The inventive special pliers are characterized in that they contain a device enabling two clamping jaws (1a, 1b) to be opened and closed in a par...
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WO/1999/024863A1 |
The present invention relates to a template (1) intended for the lens of a pair of glasses (4), wherein said template includes holes (14) for determining a drilling position or the like or for applying marks. The template (1) can be conn...
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WO/1999/021682A1 |
The apparatus has a frame (1) and a work-holding spindle (4) mounted to said frame. A drive assembly for moving a polishing spindle mounting element with respect to said frame is secured to the frame. A polishing spindle (57) is mounted ...
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WO/1999/011430A1 |
The present invention provides novel preformed base blocks that may be used with thermoplastic ophthalmic lens blocking compositions. The preformed base block has a rear portion that is sized and adapted to fit the chuck of a lens proces...
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WO/1998/055261A1 |
An ophthalmic lens generating apparatus having a tool spindle comprising a motor, a lens surfacing tool and a coupling mounted between the motor and the lens surfacing tool for retaining the lens surfacing tool to the arbor of the motor....
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WO/1998/050199A1 |
A method of processing a soft or foldable lens includes a step of tumbling (grinding) the lens in a tumbling medium. The tumbling medium includes a mixture of glass beads coated with an abrasive material, alcohol and water. This process ...
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WO/1998/047660A1 |
The invention concerns a device (2) for setting an adapter (11) on a blank (1) to transfer and fix it in a cutting device (3) controlled by cutting data, characterised in that it comprises means acquiring (4, 5, 6, 7, 8, 9) characteristi...
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WO/1998/045112A1 |
A polishing pad is provided which is comprised of vertically oriented fibers. Such pads can be produced by electrostatically flocking fibers onto a substrate. Preferably the fibers are hollow.
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WO/1998/043778A1 |
The invention relates to a device for machining a surface and the edge of a lens and especially a spectacle glass blank in a clamp. The inventive device comprises a first holding shaft which is configured as a hollow shaft and can be dis...
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WO/1998/042479A1 |
The invention relates to a part for polishing, comprised of a substrate of a rigid material and an underlying flexible support. The substrate consists of contacts (1) separated by intervals (3, 4), said intervals (3, 4) defining at least...
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WO/1998/041359A1 |
The present invention provides thermoplastic ophthalmic lens blocking compositions that have many advantages over traditional metal alloy materials. Preferred compositions comprise a blend of (i) a hydrocarbon resin, preferably an aromat...
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WO/1998/039142A1 |
An abrasive article is provided which comprises a backing; and at least one three-dimensional abrasive coating comprising diamond particles dispersed within a binder bonded to a surface of the backing, the binder comprising a cured binde...
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WO/1998/030360A1 |
An abrasive body for grinding optical glass, precious and natural stones (marble) or other materials such as wood, metal, plastics or the like, consists of a base body (3) made of a woven, knitted or embroidered fabric made of carbon fib...
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WO/1998/030357A1 |
An abrasive body (13) for a grinding disk (11), a grinding wheel or the like for grinding optical glass, precious and natural stones (marble) or the like has a base body (16) made of a sintered hard material upon which a diamond coating ...
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WO/1998/019826A1 |
A method for polishing articles comprising soft acrylic materials is disclosed. The method includes a cryogenic polishing step and a cleaning step. In the polishing step, a receptacle is charged with polishing beads of various sizes, sod...
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WO/1998/019825A1 |
A process of removing flash from a molded silicone intraocular lens includes a step of tumbling the lens body in a tumbling media. The tumbling media includes a mixture of .5 mm diameter glass beads and 1.0 mm diameter glass beads, alcoh...
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WO/1998/016368A1 |
A contact lens button and a block are integrally formed together when the contact lens button is cast in a cup (10) having an aperture (20) formed in the center of the bottom wall (14) of the cup. The block has a first elongated end form...
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WO/1998/000693A1 |
A process and device are disclosed for measuring the spherical, prismatic and cylindrical effects of a spectacle lens by means of a measurement beam oriented towards a spectacle lens lying on a lens support. The invention is characterise...
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WO/1997/048521A1 |
An actuator comprising a pair of similar devices each responsive to electrical signals to generate reciprocatory displacements, and link means coupled to the devices to translate the respective displacements of the devices into a single ...
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WO/1997/040960A1 |
Proposed and described is a machine (1) for stock-removing machining of optical materials, for example for the manufacture of spectacle lenses, characterized in that in relation to the workpiece (23), the machining tool (19) is additiona...
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WO/1997/037813A1 |
A number of blocks are reciprocably supported in a polishing apparatus in accordance with this invention, entirely independent of each other so that lifting motion of one block is not transferred to an adjacent block, thus providing flex...
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WO/1997/033352A1 |
A lens machining device is used for machining a lens which adjusts the optical characteristics of light outputted from a semiconductor laser element (10) to desired ones. The lens (12) to be machined is provided at one end section of the...
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WO/1997/018918A1 |
Apparatus for cutting a workpiece includes a rotatable cutting tool (10), a rotatable spindle (42) for rotating the cutting tool, and a quick-connect and disconnect kinematic coupler for releasably coupling together the rotatable cutting...
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WO/1997/013615A1 |
The invention relates to a method for shaping a rotationally-symmetrical surface in a material. With this method, the material is rotated about an axis and a rotating element is placed in contact with the rotating material. The rotating ...
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WO/1997/013603A2 |
Optical surfaces with complex geometry are produced today by grinding, polishing or casting in a prefabricated negative mould. This has the disadvantage that all geometric moulds required for production must be kept on stock. The object ...
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WO/1997/013173A1 |
A monocentric, multivision contact lens (10) having a single optical axis (15) and an anterior side (24). A first spherical vision surface (12) is disposed on a first portion of the anterior side and has a first radius of curvature (R2) ...
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WO/1997/010923A1 |
A conformable tape for bonding a lens block to ophthalmic lens blanks is provided. The tape comprises a polymeric backing and a pressure-sensitive adhesive. In a first preferred embodiment the surface of the backing is a blend of an olef...
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WO/1997/010924A1 |
The present invention provides thermoplastic ophthalmic lens blocking compositions that have many advantages over traditional metal alloy materials. Preferred compositions comprise a homopolymer or copolymer of epsilon-caprolactone, have...
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