DE102009004377A1 - Method for manufacturing spectacle lens for material processing device, involves providing construction data for spectacle lens, where material processing device provides material according to construction data - Google Patents

Abstract

The method involves providing a construction data for a spectacle lens. A material processing device provides a material (22,24,32) according to the construction data. The material is arranged in unit wise manner, where the construction data of the spectacle lens, comprises the surface dimensions of the lens. Independent claims are also included for: (1) a computer program product with a computer-readable command; and (2) a spectacle lens manufacturing device with a material processing device.

Description

The The present invention relates to a method for producing a Spectacle lenses, a computer program product, a use and a spectacle lens manufacturing device.

traditionally, can for producing plastic spectacle lenses or blanks two schematically various manufacturing methods are used. Spectacle lenses and / or Blanks can in the mass segment at spherical, toric and / or progressive glasses via casting techniques using cast resin and Mold are made, wherein the casting resin in a previously made mold filled becomes. The mold thus already represents the negative form of the finished spectacle lens or blanks. A polymerization of the casting resin is depending on the used Cast resin thermally and / or via UV radiation initialized. For thermoplastic materials, the spectacle lens or blank are also produced by means of an injection molding technique, although here is a negative form of the final spectacle lens or blanks is available. This method allows spectacle lenses in large quantities to produce at low production costs. The more individual the glass geometries and the smaller the numbers are, the larger they are however, the manufacturing cost. Furthermore, it is not technically possible, Produce single glasses via so-called "recipe pouring", d. H. Single glasses according to predetermined Recipe values via to produce the aforementioned method.

Much more is regularly another production process for recipe glass production used in this process, in particular the mechanical Finishing over Grinding and polishing of the prefabricated spectacle lens is performed. With this method can simple spherical glasses but also custom made glasses with Free-form surfaces getting produced. Become regular the lenses on milling, Grinding and / or lathes preprocessed and customized finished polishing machines finished. The more individual the glass has to be made, the more CNC-based machines are used. starting product is a blank marked on the reference points, the first one directed to a workpiece holder is fixed. traditionally, is a cavity between the workpiece holder and blank with a filled low-melting metal, so that after the solidification of the Metal a firm connection between the workpiece holder and gives the blank. Instead of the metal can also be suitable plastics be used.

Around for this Procedures to limit the variety of blanks are blanks provided with a lot of oversize, so that as possible size Impact combinations can be covered, that is, with a small number of different blanks the largest possible combinations of effects are produced can. Because of the big one oversize The blanks will average about 70% of the blank during manufacture cutting the finished spectacle lens. Along with the great chipping can make changes the inherent Material tension and thus deformations (material deformations) of the Blanks or spectacle lenses occur, whereby the optical quality of the final spectacle lens affected becomes.

Farther can Difficulties occur when working on non-round glasses because of a big one Removing the edge shape from a circle increases the risk that the workpiece holder will not more needed supporting action and the editing tools due to sharp edges and corners damaged become. Consequently, the above-described machining process is circular glasses with homogeneous continuous surface design optimized, in particular high gradient changes and erratic, discontinuous surface designs be made only conditionally with this finishing technology can.

It is thus an object of the present invention, an effective and cost-effective To allow production of individual spectacle lenses in particular. This object is solved by the subject matters of the independent claims. preferred variants and / or embodiments are the subject of the dependent Claims.

Method according to one Aspect of the invention

• – Bereitstellen eines Werkstoffverarbeitungsgerätes;
• – Bereitstellen von Baudaten des Brillenglases;
• – Herstellen des Brillenglases gemäß den bereitgestellten Baudaten durch einheitenweises Anordnen zumindest eines Werkstoffs mittels des Werkstoffverarbeitungsgerätes.

One aspect of the present invention relates to a method for producing a spectacle lens comprising the steps:

• - Providing a material processing device;
• - Providing Baudaten of the spectacle lens;
• - Manufacture of the spectacle lens according to the provided Baudaten by unit-wise arranging at least one material by means of the material processing device.

advantageously, can according to the present Invention spectacle lenses in any quantities be manufactured at low production costs. Here is In particular advantageously substantially no storage capacity is necessary anymore, because no blanks need to be kept in stock. Rather, lenses can be on Request or when an order is made individually, without that special Molds and / or special processing machines, such as grinding machines or polishing machines are necessary.

As well is a cutting production avoided, so that advantageously substantially no Material loss by machining is present. Rather, material essentially exclusively for Production of the spectacle lens used.

Farther allows the present method stress-free glasses or glasses with low material tension manufacture. Thus, further advantageously lenses are produced, which meet the high demands on modern lenses, wherein in particular complex machining processes and / or high investment costs for one Machine park can be avoided. Rather, the method according to the invention enables that lenses, for example Can be made on site at an optometrist.

Of the Term "spectacle lens" like him used in the present application contains in particular a standard glass, an individual lens, a blank, d. H. a half part, from which a standard glass or an individual Spectacle lens can be made, etc. The terms "glass" and "spectacle lens" can hereby be used synonymously. If a "blank" produced as a preferred "lens" The procedure can be as well include a step of editing the "blanks", this one Step a cutting and / or grinding and / or polishing and / or mill of the "blank" can.

Of the Term "unitary" like him used in this application, describes that at least a unit, preferably a plurality of units of at least arranged a material and further preferably with each other be connected and so the eyeglass frame is made.

Preferred embodiments of the procedure

Preferably can by the unit-wise arranging the at least one material the at least one material are applied in layers, so that by layer-wise application of the at least one material the spectacle lens will be produced.

in this connection the layer may comprise one or more units of the material. A unit of a material may, for. B. provided by the material processing apparatus, For example, be dosed so that a unit a predetermined Quantity or volume of the material is. A unit can, for. B. be the smallest unit of the material produced by the material processing device or can be deposited. For example, at substantially liquid or plastically deformable material, the smallest unit the smallest Amount of material dosed by the material processing device can be. For example, is the material by a laser process solidified and interconnected, can be the smallest unit essentially correspond to the volume of space in which the laser light has a predetermined energy density or in which focuses the laser light becomes.

Of the Term "generated" can in this application include that the Material is metered. The term "generated" may also include that material its chemical or physical or mechanical property changed. For example, a unit can be generated by electromagnetic Radiation is radiated into the material and in particular in the material is focused, so that the material to the unit merges. Alternatively or in addition a binder can be supplied to the material, so that the material is bound by the binder. Thus, a unit is essentially the amount of material that is bound by the binder.

to Education of the spectacle lens can a plurality of units, in particular of the smallest units be arranged together and connected to each other.

Of the Term "in layers", as he used in the context of the present application includes, for example, that materials or materials are deposited on each other. This can be a Material or material "layered" deposited be arranged by a first layer of the material and at least partially on the first layer a second layer of Material or another material is arranged. This Operation can be performed repeatedly so that one Variety of layers are arranged on each other. This is also for one Variety of materials possible. For example, you can two or more layers preferably arranged substantially in parallel be. Two or more layers can at least adjoin each other in sections and / or touching each other. Two or more layers can also form a common situation.

Various Layers can have different dimensions. For example, a location a material essentially the smallest unit of material be produced by an appropriate device or the material processing device is.

In other words, a layer may be formed, for example, by a drop of a material. In this sense, a layer can also be formed by a plurality of drops of one or more materials which chemically with each other and / or mechanically connected. Thus, a sheet in a general description is a three-dimensional object having a width, a length and a thickness. Different layers may have different widths and / or lengths and / or thicknesses. Preferably, the thickness of different layers may be substantially identical and the layers may differ in length and / or width.

• – Flächenabmessung des Brillenglases und/oder
• – eine Form des Randes des Brillenglases.

Preferably, the construction data of the spectacle lens at least

• - Surface dimension of the lens and / or
• - A shape of the edge of the lens.

area dimensions of the spectacle lens especially arrowheads of the spectacle lens. The heights can be, for example, optical Data of the spectacle lens are derived.

• – eine Größe der objektseitigen und/oder augenseitigen Fläche beispielsweise in Quadratmillimeter bzw. Quadratzentimeter, usw. und/oder
• – Krümmungsradien beispielsweise bei sphärischen und/oder torischen Flächen, und/oder
• – Krümmungen von Hauptschnitten, insbesondere bei atorischen Flächen

umfassen.Area dimensions can

• A size of the object-side and / or eye-side surface, for example in square millimeters or square centimeters, etc. and / or
• Radii of curvature, for example in spherical and / or toric surfaces, and / or
• - Curves of major cuts, especially in atorischen surfaces

include.

The Shape of the edge of the spectacle lens can, for example, the cross-sectional shape, in particular as a plan facet and / or pointed facet and / or groove etc. include. Furthermore, the shape of the edge of the spectacle lens include the peripheral shape of the spectacle lens, for example in essentially angular, oval, round, etc.

In other words can the Baudaten of the spectacle lens in particular data or dimensions in three-dimensional space include or be.

The optical data can For example, a previously determined prescription or recipe values of the User of the spectacle lens include or be.

• – sphärische Wirkung,
• – astigmatische Wirkung, d. h. Achslage und Zylinderstärke,
• – Wirkung in Fern und/oder Nahbezugspunkt,
• – Addition,
• – Progressionslänge, usw.

umfassen.The optical data of the spectacle lens can, for example

• - spherical effect,
• Astigmatic effect, ie axis position and cylinder thickness,
• Effect in far and / or near reference point,
• - Addition,
• - Progression length, etc.

include.

Preferably involves providing the construction data of the spectacle lens, the Building data under consideration determine user data of the user.

Preferably will be considered User data that at least partially comprises the optical data, measured at the user.

The For example, measuring the user data may be substantially manual be done by an optometrist, the optician conventional Equipment, In particular, a pupil distance meter, etc. may be used. It is possible, too, the existence essentially automated system, in particular a three-dimensional System can be used. By way of example, a three-dimensional Stereo system to be used, d. H. it can be a 3D measuring device especially used in the formation or use of stereo images become. Here you can all or only a subset of the user data are measured. By way of example one or more individual parameters are measured.

• – Pupillendistanz;
• – monokularer Pupillenabstand;
• – Hornhautscheitelabstand nach Bezugspunktforderung und/oder nach Augendrehpunktforderung;
• – monokularer Zentrierpunktabstand;
• – Zentrierpunktkoordinaten;
• – Scheibenabstand;
• – Dezentration des Zentrierpunktes;
• – Scheibenhöhe und/oder -breite;
• – Scheibenmittenabstand;
• – Brillenglasvorneigung;
• – Fassungsscheibenwinkel;
• – Einschleifhöhe.

User data may include one or more of the following parameters:

• - pupillary distance;
• - Monocular pupillary distance;
• - Corneal vertex distance according to reference point requirement and / or after eye pivot point request;
• - monocular centering point distance;
• - Center point coordinates;
• - disc distance;
• - Decentration of the centering point;
• - slice height and / or width;
• - disc center distance;
• - spectacle lens tilt;
• - frame angle;
• - grinding height.

Preferably At least one material is a polymer. Particularly preferred the polymer is UV-curing Polymer.

Consequently, according to a preferred embodiment of the method by means of the material processing apparatus, the (UV-curing) polymer can be applied in layers, similar to an inkjet printer, but an inkjet printer works only two-dimensionally and the material processing apparatus works three-dimensionally. An inkjet printer thus only prints one "layer" of ink because the ink is located in the plane of the paper. Similarly, in an ink jet printer, a drop corresponds to the term unit used in this application, in particular the smallest unit, so that a plurality of units, namely ink droplets form a layer. According to the invention, however, a plurality of layers are substantially parallel to arranged a support means of the material processing apparatus. Thus, the method could also be referred to as a three-dimensional structuring method. Here, the finished glass can be produced according to a digital three-dimensional data set of the glass to be produced. The three-dimensional dataset can be called "Baudata". In addition to the surface descriptions, the data may also include data of the final shape and also of the edge of the spectacle lens.

in this connection Each layer may comprise one or more materials. The thickness of each layer may preferably be predetermined by the material processing device be. In other words, it is possible that one Layer formed after solidification of the material used substantially plate-shaped is. Thus, a plurality of "plates" are stacked.

to Formation of a layer becomes at least a portion of the material processing apparatus relative to a pad or carrier plate moves, for example, a distance between the pad and the material processing apparatus or an element of the Materials processing equipment is substantially constant. Thus, a plate-shaped layer be formed, wherein the base and the material processing apparatus or a Element of the material processing device parallel to a plane, essentially by means of the length direction and the width direction the position is defined to be moved relative to each other. It is but also possible that to Forming a layer, the base and the material processing device or the Element of the material processing device along the thickness direction be moved relative to each other.

Consequently For example, a layer may have a substantially planar surface. A location can but also have a non-flat surface, for example, when the pad relative to the material processing apparatus or the Element of the material processing device in the production of the situation is moved parallel to a thickness direction. The location can be too a curved one Surface or a surface having a free form. For example, the shape of the Be predetermined by the shape of the pad. Is the pad for example, curved, can the location or can the layers also curved be.

advantageously, allows the procedure that too elaborate optics, especially those with strong local concave curvature and / or concave kink in the plane, in easier and less expensive Way can be made. Furthermore, advantageously, a complex molding edge can be avoided Be or is no edge of the form more necessary because the lens already made including the special shape of the edge can. Furthermore, by the layerwise polymerization means For example, the UV radiation, the spectacle lens substantially be made stress-free or with only low material tension.

Preferably Are after production of the spectacle lens by means of the material processing apparatus the surfaces of the spectacle lens worked.

For example can the lens removed from the material processing device be processed with a suitable device.

A Processing may include, for example, grinding and / or polishing and / or Sandblasting and / or washing etc. in or with one or more designed for it Comprise devices or devices, which may be integrated in the material processing device. For example Can polishing as a simple polishing, especially in one Drum with polishing agents are performed.

Preferably when editing the lens at least one area, especially prefers both surfaces of the spectacle lens with substantially constant optical properties processed.

Farther Preferably, at least one is when editing the spectacle lens Area, particularly preferably both surfaces of the spectacle lens processed in such a way that the optical properties of the spectacle lens or spectacle lenses are corrected.

advantageously, can thus production-related rough spots, especially the object-side area and / or the eye-side surface of the Eyeglass lens reduced or minimized or completely removed become. These bodies can for example, due to a grain of the material and / or production-related. This can also be done Production inaccuracies considered and optionally the optical properties of the spectacle lens corrected by editing, in particular to predetermined values be set.

alternative or additionally can by adaptation of the material, for example by use a polymer with higher viscosity the manufacturing accuracy increases are and / or rough spots and / or levels diminished or even be avoided. Alternatively or additionally, engines may also be used in the material processing apparatus used, which have improved accuracy, so that elements of the material processing device, which place the material or deform it exactly (he) positioned can be.

In In other words, it is possible, for example, production-related and / or material-related rough or grainy or matt surface (s) of the spectacle lens to smooth and / or optically transparent. It is also possible that the optical transparency elevated becomes.

The Thickness of the layers of the material can each be between about 10 μm and about 20 μm, more preferably about 16 microns be. Further preferably, resolutions between about 0.1 mm and about 1 mm, more preferably about 0.6 mm. Here, a manufacturing tolerance of between about 0.01 mm and about 0.2 mm, more preferably about 0.15 mm are maintained.

Of the Term "dissolution", as he used in the present application includes in particular the minimum size, with a structural element of the spectacle lens can be produced.

The Production speed can be between about 8 mm per hour per Layer at a layer thickness of about 10 microns to about 50 microns to about 30 mm per hour per layer at a layer thickness of about 10 microns to about 50 microns. The production speed can be about 12 mm per hour per layer at a layer thickness of about 16 microns be. The production speed can also be about 20 mm per Hour per layer at a layer thickness of about 30 microns amount.

Preferably are at least two materials in the manufacture of the spectacle lens used.

For example For example, a material may be a polymer with which the spectacle lens is formed. Another material, for example, a support material be. The support material can be arranged, for example, in places that later be free of material should, d. H. the at the final Product, especially the final one Spectacle lens, to be free of material. For example, the support material soluble, especially water-soluble and from the finished spectacle lens by rinsing the finished spectacle lens with solvent, z. B. water are dissolved. Alternatively or in addition the additional material, d. H. the second, third, fourth, etc. Material also be a coating material, with the one or both surfaces of the spectacle lens. For example, the second Material be a material with which an anti-reflection layer produced on the eye-side and / or object-side surface of the spectacle lens becomes.

Especially can Also, three or more materials are used, for example around a support material to attach and / or to one or more layers or coatings to be arranged on or in the spectacle lens. Preferably, for example a spherical one front surface through coated slides be coated.

Preferably comprises one material is a polymer and another material is a polymer-foreign material.

For example the second material may comprise a polymer foreign material or be. The support material may be, for example, foreign to the polymer. It is also possible with the second material, in particular a polymer-foreign material Structures, z. B. similar to engravings and / or as a trademark formed in the spectacle lens contribute. For example, the structure by means of the soluble support material in the surface of the spectacle lens are introduced. After dissolving the soluble support material with the solvent Thus depressions are introduced into the surface of the spectacle lens, the essentially identical properties such as May have engravings. However, a complicated engraving is advantageously not necessary.

Preferably the at least two materials have different colors and / or Transmittance and / or refractive index on.

In In other words, for example, the first material is a substantially be transparent polymer, with which the spectacle lens can be produced. For example, the second material may be substantially identical or similar to the first material, but a different color, another Transmittance, another refractive index, etc., have. However, the second material can also from the first material essentially complete have different chemical composition. When manufacturing of the spectacle lens For example, the first and the second material used in such a way be that due the other color or transmittance, etc. by means of the second Material a structure z. B. in the form of a marker, a Characters, especially a trademark, etc. on the spectacle lens is placed, in particular introduced into the interior of the spectacle lens becomes.

Preferably is at least one divider layer by means of at least two materials introduced into the spectacle lens.

Preferably becomes at least one polarization layer by means of the at least two materials arranged the spectacle lens and / or introduced into the spectacle lens.

Thus, for example, coatings on or on the surfaces, ie the eye-side surface and / or the object-side surface of the spectacle lens are arranged or additional layers are attached. These layers can be arranged particularly advantageously in the interior of the spectacle lens, so that, for example, a mechanical injury and / or a removal of the layer (s) is reduced, in particular avoided.

Preferably is the shatterproof by means of at least two materials increased.

In other words is it possible that in the spectacle lens is a security layer is introduced, which a very high elasticity having. This layer is intimate, especially chemically with the spectacle lens connected. Thus, opposite a conventional one Spectacle lens increases the splitter safety. In particular, this one has arranged in the interior of the lens layer the same or similar functionality like a foil, which is introduced into the interior of the spectacle lens is or as a film disposed between two halves of the lens is. For example, this layer can increase the safety of shattering. These Layer may additionally or alternatively, for example, also the same functionality as a Have polarizing film and / or polarization layer. Alternatively or additionally this layer a similar, in particular the same functionality as a photochromic film and / or have coating or coating.

A Layer can over be formed several layers away. A layer can also be one or correspond to several layers.

Preferably At least one material has photochromic properties.

consequently Is it possible, that in simply the spectacle lens has photochromic properties. This can be done, for example, that a layer of the material is introduced into the spectacle lens with photochromic properties. It is also possible, the existence Polymer with photochromic property is used and the spectacle lens is made from this polymer.

Consequently may be the layer of material similar or even have identical properties, such as a film and / or an otherwise applied layer, z. B. as a vapor-deposited Layer.

In In other words, it is thus possible by clever handling of the object, for example, divider layer (s), Polarization layer (s), layer (s) for splinter safety, in particular layer (s) with photochromic dyes, etc. exactly in a desired spatial Position in or on the lens. This can be different Materials are used. By using different Materials can be obtained the same effect as if a physical formed film is arranged in or on the spectacle lens. This Effect can be achieved by having a layer that is not necessarily Completely coherently have to be, but, for example, has recesses, etc., over several Layers away in or on the spectacle lens is arranged. A conventional one Spectacle lens can not be made in this way, in particular, since foils are not arranged in the interior of the spectacle lens can or when casting of the spectacle lens a film can not be arranged such that theirs exact position is predictable. The present method allows However, just a precise positioning of any layers in the Inner of the spectacle lens or a layer structure of the spectacle lens. In this case, this material layer can be substantially perpendicular to be the layers applied by the material processing equipment become. In other words, the spectacle lens can consist of several layers be constructed, with the materials used in the layers one or can form several layers.

The For example, in the interior of the spectacle lens arranged layer be formed by surfaces in comprising the layers applied by the material processing apparatus formed the first material and one or more other materials become.

Preferably is by means of a material, a material layer in and / or formed on the at least one further material.

Computer program product according to a aspect

One Aspect of the present invention relates to a computer program product, comprising computer-readable instructions stored on a data carrier could be and / or can be implemented as a signal which, when loaded into the memory of a computer and run from the computer causing that the Computer a method according to the invention performs.

Use of a material processing apparatus according to a aspect

One Aspect of the present invention relates to the use of a Materials processing equipment to perform the method according to the invention.

Spectacle lens manufacturing apparatus according to one aspect

An aspect of the present invention be meets a spectacle lens manufacturing apparatus comprising a material processing apparatus and an input / output device, wherein the spectacle lens manufacturing apparatus is adapted to perform a method according to the invention.

Preferred embodiments of the spectacle lens manufacturing apparatus

The Spectacle lens manufacturing equipment may include a material processing device or in data exchange stand and an input / output device, in particular as a human-machine interface designed, include or be in data exchange. The man-machine interface In particular, a display, for example in the form of a computer monitor and an input device, such as keyboard and mouse. About the Input device can Parameters are specified, for. B. can specify a lens design become.

The Spectacle lens can be displayed by means of the computer monitor. The spectacle lens can be changed by means of the input device, d. H. the lens can be adjusted. The modified spectacle lens can be displayed using the computer monitor. The representation can preferably be done in real time. Thus, the user of the Spectacle lenses or the optician, etc., customize the lens and check the lens on the computer monitor before making the lens. Farther the order for producing the spectacle lens can be transmitted become.

Further the eyeglass lens manufacturing apparatus may comprise a measuring device in order to be in communication with the measuring device is designed, to measure physiological data of the user of the spectacle lens. The measuring device may be, for example, a 3D stereo system.

The The above invention is not limited to the described aspects. Much more can Any individual features combined and thus more variants and / or embodiments and / or aspects of the invention are provided. Especially The invention also relates to a spectacle lens, which by each other connected layers of at least one material is constructed.

figure description

preferred Embodiment (s) The present invention will / be by means of the following figures described by way of example. It shows

1a a schematic view of a material processing apparatus at a time t ₀ ;

1b a schematic view of the tool processing device at a time t ₁ ;

1c a schematic view of the tool processing device at a time t ₂ ;

1d a schematic view of the material processing apparatus at a time t ₃ ;

1e a schematic view of the material processing apparatus;

1f a schematic view of a material processing apparatus;

1g a schematic detail view of the material processing apparatus;

2 a schematic plan view of a part of a material processing apparatus;

3 a schematic plan view of a part of a material processing apparatus;

4 a flowchart;

5 : A sectional view of a spectacle lens

6 : A sectional view of a spectacle lens.

1a shows a simplified schematic view of the principle of a material processing apparatus 1 , The material processing device 1 includes a carrier plate 10 as well as two material dispensing units 12 . 14 , For easy description, the two material dispensing units 12 . 14 as nozzles 12 . 14 designated. The nozzles 12 . 14 are designed to output material (hatched). The material can be used both in the nozzles 12 . 14 and stored in external storage units (not shown) connected to the nozzles 12 . 14 via other devices, such as pumps, heaters, etc. are connected.

Furthermore, in 1a a material hardening unit 16 shown. The material hardening unit can be, for example, a source of electromagnetic radiation, in particular a UV lamp 16 be. Furthermore, in 1a schematically UV radiation 18 shown. In addition to the UV radiation 18 or alternatively to the UV radiation 18 can also heat radiation, particle radiation, a gas or vapor from the material hardening unit 16 be issued.

In 1a is the material processing device 1 shown at a time t ₀ .

1b shows the Werkstoffverarbeitungsge advises 1 at a time t ₁ after the time t ₀ . 1b shows a first location 20 a first material 22 on the carrier plate 10 , The first location 20 is parallel to the carrier plate 10 , Between the time t ₀ and the time t ₁ was the first material 22 by means of the nozzle 12 on the carrier plate 10 applied. By means of UV radiation 18 becomes the first material 22 hardened.

1c shows the material processing device 1 at a time t ₂ after the time t ₁ . As in 1c is shown, between the time t ₁ and the time t _2, a second material 24 and following the second material 24 another first material 22 on the carrier plate 10 applied. The location 20 thus comprises the first material 22 and the second material 24 , wherein the second material 24 in the first material 22 is embedded.

1d shows the material processing device 1 at a time t ₃ . In 1d is shown on the first layer 20 that the first material 22 and the second material 24 includes a second layer 26 was applied. The second location 26 as they are in 1d is shown, consists only of the first material 22 , In further steps, additional materials can be transferred to the second layer 26 be inserted. For example, may be the first material 22 the second material 24 connect. The second material 24 can thus form a divider layer and / or a polarization layer, etc., when the second material 24 extends over several layers at least partially contiguous. It is also possible that a plurality of further layers (not shown) are applied.

alternative or additionally can Also a variety of other materials can be used. in this connection is it possible in particular that one Variety of nozzles (not shown) are used. Alternatively or additionally, a or several (further) nozzles Apply different materials by, for example, the corresponding Fully taught nozzles and new materials are entered into the corresponding nozzles become.

1e schematically shows a further processing step. This can / can by means of a molding device 27 the first material 22 and / or the second material 24 to be edited. Preferably, in the still plastically deformable state of the first and / or the second material 22 . 24 the shape of the first and / or second material 22 . 24 at least partially to the shape of the molding device 27 be adjusted. This can be z. B., before the first and / or the second material 22 . 24 is cured, with a curing z. B. by cooling the material 22 . 24 and / or lighting the material 22 . 24 with electromagnetic radiation, etc. is possible. The mold device 27 can z. As a trackball, a cylinder, a roller, a blade, etc. be. In particular, the molding device 27 be designed, the first and / or the second material 22 . 24 to smooth at least in certain areas. The in 1e shown processing step may coincide with the placement of the first and / or the second layer 20 . 26 be performed. It is also possible that the processing step is carried out subsequently, wherein the shaping device 27 can be designed, the material 22 . 24 plastically deform. Here, the shaping device 27 be heated or secrete a chemical, It is also possible that the material 22 . 24 is at least partially softened before the molding device 27 is used. This can be z. B. by irradiation of electromagnetic radiation and / or exposure to a chemical as a liquid and / or steam.

1f shows an embodiment with a curved base, or support plate 10 , On the carrier plate 10 are two layers 20 . 26 of the first material 22 arranged. The first location 20 of the first material corresponds in this example, the minimum amount of the first material from the nozzle 12 can be separated. In other words, in this example, the first layer exists 20 from a unit of the first material 22 , The second location 26 consists in this example of two units of the first material 22 , In particular, the in 1f illustrated arrangement of the units of the first material 22 in the second position 26 be possible that the first material as a powder, liquid, fluid, gel, etc. present (not shown) and the units by introducing a liquid or by irradiation and focusing of electromagnetic radiation is generated.

It is possible that the first layer 20 by a plurality of units, for example seven units of the first material 22 is formed as in 1g shown. This may be due to material properties of the first material 22 connect the individual units to a continuous layer or in this case a layer, the z. B. has a flat surface, as has been described in the preceding figures or having an uneven surface.

It is also possible that the position of the first material by focusing electromagnetic radiation, for. B. is formed by focusing laser light in a medium. Thus, z. For example, a continuous layer can be formed in which the focus of the electromagnetic radiation in the medium is moved without interrupting the radiation. Thus, in the present application, according to this example, the term "layerwise" and the term "unitary" may also be used interchangeably become.

1a to 1g show exemplary possibilities, the different layers and layers of the first 22 and / or second material 24 to arrange. It is also possible that, for example, in a tank, the first material is completely liquid and by irradiation, for example, laser light, which is focused on the surface or in the interior of the liquid material to harden the liquid material or deposit as a solid, and so to manufacture the spectacle lens in layers.

It is possible, too, that the first material as a solid is present and in layers, for example by irradiation of laser light the powdery one Material is melted. This can be fixed to any position of the Material a layer of powdered Material applied and connected to the previous location and thereby the spectacle lens are produced in layers. It can too different materials are applied alternately. alternative or additionally to the laser light source can also liquids over nozzles in the powdery or liquid Material are introduced, which harden the material in layers and successively connect the layers.

When preferred method for elemental or layered manufacturing of the spectacle lens, for example, a 3D printing process, a Laser Sinteringverfahren, a stereolithography method, etc. are used.

Consequently let yourself, as described above, define and manufacture a spectacle lens, for example, where an optician is united in one device a spectacle lens manufacturing device optionally with a coating device is available, so that, for example The optometrist spot eyeglass lenses based on data of the Make a spectacle wearer can. Preferably, a spectacle lens calculation unit can also be integrated into the production device For example, the calculation routines for individual optimization of spectacle lenses includes. Alternatively or in addition can also one or more measuring instruments be integrated, for example, the physiological data of spectacle wearer determine, in particular measure and if necessary calculate.

2 shows a plan view of the carrier plate 10 without further details of the material processing apparatus 1 are shown, ie without in particular the nozzles 12 . 14 and the UV lamp 16 are shown. Rather shows 2 the first location 20 , by means of the first material 22 and the second material 24 on the carrier plate 10 was applied. The location 20 thus forms, for example, the first layer of a spectacle lens. In other words, the first location corresponds 20 a sectional view of a spectacle lens (not shown), wherein, for example, the in 2 Front surfaces of the first material shown on the left a surface 28 , For example, an eye-side surface 28 of the spectacle lens. The opposite, ie in 2 arranged on the right side further surfaces of the first material 22 can, for example, the further area 30 ie the object-side surface 30 of the spectacle lens.

2 shows in particular a schematic enlarged view, so that the eye-side surface 28 and the object-side surface 30 are not shown as continuous surfaces, but rather have stepped shape. It is possible that due to the high resolution during manufacture, the stages shown are not perceived as such by the user of the spectacle lens. Furthermore, it may be possible that in one or more subsequent steps, the eye-side surface 28 and / or the object-side surface 30 edited, in particular polished, so that a smooth surface is formed substantially without steps.

The second material 24 forms (over several layers) a layer of material 31 inside the spectacle lens (not shown). This material layer 31 For example, photochromic properties and / or polarization properties and / or higher flexibility, etc. than the surrounding spectacle lens of the first material 22 exhibit.

In particular, it is possible that the material layer 31 from the second material 24 has a precisely predetermined position in the interior of the spectacle lens. This is how in the 1a to 1d is shown, possible in a simple manner, since the different materials can be arranged arbitrarily. Thus, it is possible through skillful handling, divider layers, polarization layers, layers for splintering security, especially with photochromic dyes, etc. to bring exactly in a desired spatial position in the lens. It may be necessary that the spectacle lens or the corresponding construction stage of the spectacle lens with the support plate 10 is brought into the necessary spatial alignment by rotation and / or translation. This may alternatively or in addition to a positioning of the nozzles 12 . 14 be made.

3 shows a schematic view according to 2 however, on the eye-side surface 28 a third material 32 is arranged, which is a material layer 34 forms. The third material 32 For example, a coating of the eye-side surface corresponds for example to an anti-reflection of the eye-side surface. Thus, the material layer replaces 34 from the third material 32 an up vaporizing a layer, for example an antireflection coating, a polarization layer, etc., and / or arranging a corresponding film.

4 shows a flowchart of an exemplary sequence of an embodiment of the method according to the invention.

In In a first step S1, a material processing device is provided. Step S1 may be an initial step, i. h., that the following Steps performed repeatedly can be and the first step is performed only once.

In In a second step S2, the building data of the spectacle lens is provided. The provision of the construction data of a spectacle lens can be, for example include that concrete Construction data, in particular arrowheads of the spectacle lens can be read from a database. alternative or in addition it also possible that recipe data the user of the lens are read from a database and a corresponding spectacle lens based on these recipe data, is calculated, in particular surfaces of the spectacle lens are calculated can, and, based on these areas, calculate arrowheads can be so that the given optical properties, in particular the recipe values can be achieved.

It is possible, too, that in Step S2, the user of the spectacle lens is measured, d. H. that physiological Data of the user of the spectacle lens are measured and from these physiological data prescription values determined, in particular calculated become. The physiological data can be individual parameters of the User of the spectacle lens or a concrete position of use of the spectacle lens in the system of the user 's head and eye (s) Eyeglass lenses include.

Based on these prescription values and optionally using the physiological data or a subset of the physiological data, such as Habitual head posture, pupillary distance, exophoria, esophoria, etc., can determines the specific dimensions of the spectacle lens, in particular be calculated. This data can obtained by means of a simulation or an optimization algorithm become. Here, the simulation or the optimization algorithm in the material processing device be integrated. For example, the material processing device a Have integrated circuit, the simulation or the Performs optimization algorithm. Alternatively or in addition the material processing device can also work with a computer, which performs this simulation or the optimization algorithm.

alternative or additionally can the physiological data is at least partially semi-automatic or Completely automatically, especially with a 3D measuring device using stereo images, for example.

In a step S3, the spectacle lens by layer-wise application at least one material produced by the material processing apparatus.

In a step S4 can For example, one or more materials, such as a support material be washed out.

In a step S5, for example, the object-side surface 30 and / or the eye-side surface 28 be reworked, in particular polished.

5 shows a sectional view of a unit-produced spectacle lens 36 , Advantageously, it is possible for the spectacle lens to have a groove 38 or a profile 38 manufacture. Thus, the spectacle lens can be arranged in a spectacle frame in a simple and reliable manner. Alternatively or additionally, it is also possible that spectacle lens 36 with holes (not shown) so that the lens 36 can be used in a rimless glasses without the lens must be pierced.

6 shows a further sectional view of the spectacle lens 36 , where the spectacle lens 36 a structure 40 or a pattern 40 having. The structure 40 For example, it can be created by using a material that is soluble. The structure 40 can thus replace an engraving when the structure in the surface of the lens 36 is embedded. It is also possible that they have structure inside the spectacle lens 36 is arranged, wherein the one material can be used, one of the remaining spectacle lens 36 different optical refractive index, another color, etc. Thus, in an arrangement of the structure 40 in the spectacle lens 36 the spectacle lens 36 have substantially smooth surface.

1

Materials processing equipment

10

support plate

12

Material output unit / nozzle

14

Material output unit / nozzle

16

Werkstoffhärteinheit / UV lamp

18

UV radiation

20

first location

22

first material

24

second material

26

second location

27

forming device

28

Area / eye-side area

30

Area / object-side area

31

Layer / material layer

32

third material

34

Layer / material layer

36

lens

38

Nut / Profile

40

Structure / pattern

Claims (20)

Method of producing a spectacle lens comprising the steps of: - providing a material processing device ( 1 ); - Providing Baudaten of the spectacle lens; Producing the spectacle lens according to the provided building data by arranging at least one material ( 22 . 24 . 32 ) by means of the material processing device ( 1 ). Method according to claim 1, wherein the unit-wise arrangement of the at least one material ( 22 . 24 . 32 ) the at least one material ( 22 . 24 . 32 ) is applied in layers. Method according to claim 1 or 2, wherein the building data of the spectacle lens at least - Area dimensions of the spectacle lens and or - one Shape of the edge of the lens include. The method of claim 1, 2 or 3, wherein providing the construction data of the spectacle lens includes the construction data under consideration determine user data of the user. The method of claim 4, wherein the to be considered User data is measured at the user. Method according to at least one of the preceding claims, wherein at least one material ( 22 . 24 . 32 ) is a polymer. Method according to at least one of the preceding claims, wherein after production of the spectacle lens by means of the material processing apparatus ( 1 ) the surfaces of the spectacle lens ( 28 . 30 ) to be edited. Method according to claim 7, wherein during the processing of the spectacle lens at least one surface ( 28 . 30 ) of the spectacle lens is processed at substantially constant optical properties. Method according to claim 7, wherein during the processing of the spectacle lens at least one surface ( 28 . 30 ) of the spectacle lens is processed in such a way that the optical properties of the spectacle lens are corrected. Method according to at least one of the preceding claims, wherein during the production of the spectacle lens at least two materials ( 22 . 24 . 32 ) be used. Method according to claim 10, wherein a material ( 22 . 24 . 32 ) comprises a polymer and another material ( 22 . 24 . 32 ) comprises a polymer foreign material. Method according to claim 10 or 11, wherein the at least two materials ( 22 . 24 . 32 ) have different color and / or transmittance and / or refractive index. Method according to at least one of the preceding claims 10 to 12, wherein by means of the at least two materials ( 22 . 24 . 32 ) at least one divider layer ( 31 ) is introduced into the spectacle lens. Method according to at least one of the preceding claims 10 to 13, wherein by means of the at least two materials ( 22 . 24 . 32 ) at least one polarization layer ( 31 . 34 ) is arranged on the spectacle lens and / or introduced into the spectacle lens. Method according to at least one of the preceding claims 10 to 14, wherein by means of the at least two materials ( 22 . 24 . 32 ) the safety of splinters is increased. Method according to at least one of the preceding claims 10 to 15, wherein at least one material ( 22 . 24 . 32 ) has photochromic properties. Method according to at least one of the preceding claims 10 to 16, wherein by means of the at least one material ( 22 . 24 . 32 ) a material layer ( 31 . 34 ) in and / or on the at least one further material is formed. Computer program product comprising computer readable Commands which, when loaded into the memory of a computer and accomplished cause the computer Computer a method according to at least one of the preceding claims performs. Use of a material processing device ( 1 ) for carrying out a method according to at least one of the preceding claims 1 to 17. Spectacle lens manufacturing apparatus comprising a material processing apparatus ( 1 ) and an input / output device, wherein the spectacle lens Positioning device is designed to perform a method according to at least one of the preceding claims 1 to 17.