EP1057590B1 - Consumable polishing element, specially for finishing optical glasses - Google Patents
Consumable polishing element, specially for finishing optical glasses Download PDFInfo
- Publication number
- EP1057590B1 EP1057590B1 EP00450008A EP00450008A EP1057590B1 EP 1057590 B1 EP1057590 B1 EP 1057590B1 EP 00450008 A EP00450008 A EP 00450008A EP 00450008 A EP00450008 A EP 00450008A EP 1057590 B1 EP1057590 B1 EP 1057590B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- polishing element
- element according
- fibres
- polishing
- base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
- B24D13/14—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B13/00—Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor
- B24B13/01—Specific tools, e.g. bowl-like; Production, dressing or fastening of these tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
- B24D11/001—Manufacture of flexible abrasive materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
- B24D13/14—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face
- B24D13/145—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by the front face having a brush-like working surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/20—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
- B24D3/28—Resins or natural or synthetic macromolecular compounds
Definitions
- the present invention relates to a consumable polishing element for finishing optical glasses.
- optical glasses undergo several transformation steps to arrive at the desired geometric shape and final transparency.
- pads which are removably mounted on rigid rotating supports, called “tools” and which are used as consumables for perform lapping and polishing operations.
- pads are generally fixed by an adhesive interface directly on the tool, or else entrained by a material with very high coefficient of friction, itself fixed by an adhesive interface on the tool.
- French patent application No. 2,595,606 discloses a multi-layer abrasive disc having two populations of calibrated abrasive grains.
- the disc comprises two layers, one internal close to the support and the other external opposite the support.
- grains larger than that of the grains placed in the inner layer are included, in a ratio of the order of 1.5 to give an order of magnitude.
- such embodiments use abrasive grains included in a support polymer of the UV-curable type.
- these are grains of abrasives which are held in a polymer support.
- WO-98/45112 describes a polishing element, intended to be mounted on a rotating support, comprising a base of a polymer film, comprising on its surface a flocking comprising polyester or nylon fibers fixed on said base to the using an adhesive.
- the present invention relates to a consumable polishing element of the pad type which is economical, which allows significant time savings, which makes it possible to achieve a suitable polishing quality, which can be produced in large numbers, which can receive liquids with suspensions.
- abrasives known type with a longevity compatible with the polishing parameters and which is easy to use.
- the finishing polishing element for mineral or organic optical glasses intended to be mounted on a rotating support, of shape adapted to that of the glass to be polished, comprising a base consisting of a polymeric film, of a fabric or of a nonwoven, comprises on its surface a flocking comprising viscose fibers fixed on said base by means of an adhesive.
- the fibers have a length of between 0.3 mm and 1.0 mm and a diameter of between 5 ⁇ m and 25 ⁇ m.
- the base and the glue retained also have specific characteristics for an optimal result.
- This single figure shows a base 10 which is cut from a polymer film.
- This base could also come from cutting a fabric or a nonwoven, according to the applications, but the best results obtained were with a polymer base.
- the polymer is a polyvinyl chloride.
- the surface mass is between 150 g / m 2 and 400 g / m 2 , preferably 240 g / m 2 , which corresponds to a thickness of approximately 0.25 mm.
- the density of the support has a strong influence on many working parameters and provides certain advantages.
- the density allows a good conformation on the tool, a good grip during the installation and the removal of the pad, a good resistance to compression and a homogeneous distribution of the pressure during work, which is synonymous with '' high polishing precision.
- This base is advantageously cut in the form of a disc because the machines which receive it are of the rotating type.
- the term disc must be taken in its widest sense, that is to say a piece of revolution, but it can of course take the circular or oval shape, with petals or without, with indentations or not.
- This base 10 is then flocked by distributing fibers 12 in an adhesive 14.
- the fibers are deposited in surplus and are oriented by methods known in this technical field such as the creation of electrostatic fields.
- the viscose fibers have a linear mass of 5 decitex and a length of between 0.3 mm and 1.0 mm, preferably 0.5 mm, which leads to a surface mass of between 50 g / m 2 and 120 g / m 2 preferably 70 g / m 2 .
- the length is the length of the fibers as they are produced and are therefore measured a priori.
- the diameter of these fibers is between 5 and 25 ⁇ m and preferably between 15 and 25 ⁇ m, for the given lengths.
- the adhesive it is preferably a glue based on polyvinyl chloride added with a plasticizer having a surface mass of between 50 g / m 2 and 150 g / m 2 , preferably 130 g / m 2 .
- the total thickness of the polishing element according to the present invention is between 0.8 and 0.90 mm, more particularly 0.85 mm.
- the polishing element according to the present invention makes it possible to obtain surprising results since the time is reduced from 12 min to 7 or 8 min for the same surface of the same profile and by using the same polishing liquid. aluminum oxide.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Polishing Bodies And Polishing Tools (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Surface Treatment Of Glass (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
- Glass Compositions (AREA)
Abstract
Description
La présente invention concerne un élément consommable de polissage pour la finition des verres optiques.The present invention relates to a consumable polishing element for finishing optical glasses.
En effet, les verres optiques subissent plusieurs étapes de transformation pour arriver à la forme géométrique recherchée et à la transparence finale.Indeed, optical glasses undergo several transformation steps to arrive at the desired geometric shape and final transparency.
Le surfaçage des verres optiques, face concave ou convexe, comprend au moins trois grandes étapes :
- l'ébauche qui permet de donner le profil général,
- le doucissage par rodage qui permet de régulariser la surface, et
- le polissage qui affine encore la surface et donne au verre sa transparence.
- the outline which gives the general profile,
- lapping by lapping which regularizes the surface, and
- polishing which further refines the surface and gives the glass its transparency.
Compte tenu de la diversité des profils des verres optiques, il a été mis au point des supports spécifiques, appelés "pads", qui viennent se monter de façon amovible sur des supports rigides tournants, appelés "outils" et qui sont utilisés comme consommables pour effectuer les opérations de doucissage et de polissage par rodage.Given the diversity of the profiles of optical glasses, specific supports have been developed, called "pads", which are removably mounted on rigid rotating supports, called "tools" and which are used as consumables for perform lapping and polishing operations.
Ces pads sont généralement fixés par une interface adhésive directement sur l'outil, ou encore entraînés par un matériau à très fort coefficient de friction, lui-même fixé par une interface adhésive sur l'outil.These pads are generally fixed by an adhesive interface directly on the tool, or else entrained by a material with very high coefficient of friction, itself fixed by an adhesive interface on the tool.
Les verres sont maintenant, pour la plupart, des verres organiques et les problèmes qui se posent ne sont pas nécessairement dans la technicité de la réalisation des formes mais dans les délais de fabrication pour, d'une part, produire à la demande dans des délais les plus courts possibles et, d'autre part, pour diminuer les prix de revient.The glasses are now, for the most part, organic glasses and the problems which arise are not necessarily in the technicality of the realization of the forms but in the manufacturing deadlines for, on the one hand, produce on demand in the shortest possible time and, on the other hand, to reduce cost prices.
Il faut donc pouvoir trouver des agencements de matériau constituant les pads, qui permettent des gains de temps de polissage, qui recourent à des matériaux peu coûteux puisqu'il s'agit d'éléments consommables, qui puissent s'adapter aux conditions de rodage.It is therefore necessary to be able to find arrangements of material constituting the pads, which allow savings in polishing time, which use inexpensive materials since they are consumable elements, which can adapt to running-in conditions.
On connaît par la demande de brevet français N°2.595.606 un disque abrasif multicouches ayant deux populations de grains abrasifs calibrés. Ainsi, le disque comprend deux couches l'une interne proche du support et l'autre externe à l'opposé du support. Dans la couche externe, on inclut des grains de taille supérieure à celle des grains disposés dans la couche interne, ceci dans un rapport de l'ordre de 1,5 pour donner un ordre de grandeur.French patent application No. 2,595,606 discloses a multi-layer abrasive disc having two populations of calibrated abrasive grains. Thus, the disc comprises two layers, one internal close to the support and the other external opposite the support. In the outer layer, grains larger than that of the grains placed in the inner layer are included, in a ratio of the order of 1.5 to give an order of magnitude.
Il est alors possible de dégrossir dans une première phase puis d'affiner avec les grains plus fins, sous arrosage d'eau.It is then possible to rough in a first phase and then to refine with the finer grains, under water spraying.
Avantageusement de telles réalisations recourent à des grains d'abrasifs inclus dans un polymère support du type durcissable sous UV.Advantageously, such embodiments use abrasive grains included in a support polymer of the UV-curable type.
On constate que dans un tel mode de réalisation, il s'agit de grains d'abrasifs qui sont maintenus dans un support polymère.It can be seen that in such an embodiment, these are grains of abrasives which are held in a polymer support.
Il existe une autre technique qui consiste à recourir à des pads en forme de disques de matériaux fibreux qui sont arrosés, pendant la période de travail, avec des liquides comportant des particules abrasives. Ces disques doivent avoir des particularités de conformation afin de respecter au mieux la forme de l'outil, et retenir au mieux le liquide lubrifiant et porteur de particules abrasives, tout en limitant l'usure desdites fibres qui pourrait conduire à une détérioration de la qualité de polissage et/ou à la pollution du bain.There is another technique which consists in using pads in the form of discs of fibrous materials which are watered, during the working period, with liquids containing abrasive particles. These discs must have specific features in order to best respect the shape of the tool, and best retain the lubricating liquid and carrier of abrasive particles, while limiting the wear of said fibers which could lead to a deterioration in quality. polishing and / or pollution of the bath.
Le document WO-98/45112 décrit un élément de polissage, prévu pour être monté sur un support tournant, comprenant une embase d'un film polymère, comprenant à sa surface un flocage comprenant des fibres en polyester ou en nylon fixées sur ladite embase au moyen d'une colle.Document WO-98/45112 describes a polishing element, intended to be mounted on a rotating support, comprising a base of a polymer film, comprising on its surface a flocking comprising polyester or nylon fibers fixed on said base to the using an adhesive.
La présente invention concerne un élément consommable de polissage du type pad qui est économique, qui permet des gains de temps importants, qui permet d'atteindre une qualité de polissage adaptée, qui peut être produit en grand nombre, qui peut recevoir les liquides avec suspensions abrasives de type connu, d'une longévité compatible avec les paramètres de polissage et qui est d'une utilisation simple.The present invention relates to a consumable polishing element of the pad type which is economical, which allows significant time savings, which makes it possible to achieve a suitable polishing quality, which can be produced in large numbers, which can receive liquids with suspensions. abrasives known type, with a longevity compatible with the polishing parameters and which is easy to use.
A cet effet, selon l'invention, l'élément de polissage de finition pour des verres optiques minéraux ou organiques, prévu pour être monté sur un support tournant, de forme adaptée à celle du verre à polir, comprenant une embase constituée d'un film polymère, d'un tissu ou d'un non tissé, comprend à sa surface un flocage comprenant des fibres de viscose fixées sur ladite embase au moyen d'une colle.To this end, according to the invention, the finishing polishing element for mineral or organic optical glasses, intended to be mounted on a rotating support, of shape adapted to that of the glass to be polished, comprising a base consisting of a polymeric film, of a fabric or of a nonwoven, comprises on its surface a flocking comprising viscose fibers fixed on said base by means of an adhesive.
Avantageusement, les fibres ont une longueur comprise entre 0,3 mm et 1,0 mm et un diamètre compris entre 5 µm et 25 µm.Advantageously, the fibers have a length of between 0.3 mm and 1.0 mm and a diameter of between 5 μm and 25 μm.
L'embase et la colle retenues présentent aussi des caractéristiques spécifiques pour un résultat optimal.The base and the glue retained also have specific characteristics for an optimal result.
La présente invention est maintenant décrite en regard du dessin sur lequel la figure unique montre une vue en coupe schématique d'un élément du type pad.The present invention is now described with reference to the drawing in which the single figure shows a schematic sectional view of an element of the pad type.
Sur cette figure unique on a représenté une embase 10 qui est découpée dans un film polymère. Cette embase pourrait aussi venir de découpe d'un tissu ou d'un non tissé, suivant les applications, mais les meilleurs résultats obtenus l'ont été avec une embase polymère.This single figure shows a base 10 which is cut from a polymer film. This base could also come from cutting a fabric or a nonwoven, according to the applications, but the best results obtained were with a polymer base.
On note aussi un autre avantage, celui d'un bon arrachage, dû au fait que le film polymère peut supporter aisément la traction sans présenter d'anisotropie dans le déchirement comme les tissus, ce qui les rend fragiles lorsque l'opérateur exerce une traction pour assurer le retrait du pad de l'outil.Another advantage is also noted, that of good tearing, due to the fact that the polymer film can easily withstand traction without exhibiting anisotropy in tearing like tissue, which makes them fragile when the operator exerts traction. to remove the pad from the tool.
Suivant un mode préféré, le polymère est un polychlorure de vinyle. La masse surfacique est comprise entre 150 g/m2 et 400 g/m2, de préférence 240 g/m2, ce qui correspond à une épaisseur sensiblement de 0,25 mm.According to a preferred embodiment, the polymer is a polyvinyl chloride. The surface mass is between 150 g / m 2 and 400 g / m 2 , preferably 240 g / m 2 , which corresponds to a thickness of approximately 0.25 mm.
La densité du support a une forte influence sur de nombreux paramètres de travail et procure des avantages certains.The density of the support has a strong influence on many working parameters and provides certain advantages.
En effet, la densité permet une bonne conformation sur l'outil, une bonne préhension lors de la pose et de la dépose du pad, une bonne résistance à la compression et une répartition homogène de la pression pendant le travail, ce qui est synonyme d'une grande précision de polissage.Indeed, the density allows a good conformation on the tool, a good grip during the installation and the removal of the pad, a good resistance to compression and a homogeneous distribution of the pressure during work, which is synonymous with '' high polishing precision.
Cette embase est avantageusement découpée sous forme d'un disque car les machines qui la reçoivent sont de type tournant. Le terme disque doit être pris dans son acceptation la plus large c'est à dire pièce de révolution mais il peut prendre bien sûr la forme circulaire ou ovale, avec des pétales ou sans, avec des indentations ou non.This base is advantageously cut in the form of a disc because the machines which receive it are of the rotating type. The term disc must be taken in its widest sense, that is to say a piece of revolution, but it can of course take the circular or oval shape, with petals or without, with indentations or not.
Cette embase 10 est ensuite floquée en répartissant des fibres 12 dans un adhésif 14. Les fibres sont déposées en surplus et sont orientées par des procédés connus dans ce domaine technique comme la création de champs électrostatiques.This base 10 is then flocked by distributing fibers 12 in an adhesive 14. The fibers are deposited in surplus and are oriented by methods known in this technical field such as the creation of electrostatic fields.
Avantageusement, les fibres de viscose ont une masse linéique de 5 décitex et une longueur comprise entre 0,3 mm et 1,0 mm, préférentiellement 0,5 mm, ce qui conduit à une masse surfacique comprise entre 50 g/m2 et 120 g/m2 de préférence 70 g/m2. La longueur est la longueur des fibres telles qu'elles sont produites et sont donc mesurées a priori. Advantageously, the viscose fibers have a linear mass of 5 decitex and a length of between 0.3 mm and 1.0 mm, preferably 0.5 mm, which leads to a surface mass of between 50 g / m 2 and 120 g / m 2 preferably 70 g / m 2 . The length is the length of the fibers as they are produced and are therefore measured a priori.
Le diamètre de ces fibres est compris entre 5 et 25 µm et de préférence entre 15 et 25 µm, pour les longueurs données.The diameter of these fibers is between 5 and 25 μm and preferably between 15 and 25 μm, for the given lengths.
Quant à l'adhésif, il s'agit de façon préférentielle d'une colle à base de polychlorure de vinyle additionnée d'un plastifiant ayant une masse surfacique comprise entre 50 g/m2 et 150 g/m2, de préférence 130 g/m2.As for the adhesive, it is preferably a glue based on polyvinyl chloride added with a plasticizer having a surface mass of between 50 g / m 2 and 150 g / m 2 , preferably 130 g / m 2 .
Pour donner un ordre de grandeur, l'épaisseur totale de l'élément de polissage selon la présente invention est comprise entre 0,8 et 0,90 mm, plus particulièrement 0,85 mm.To give an order of magnitude, the total thickness of the polishing element according to the present invention is between 0.8 and 0.90 mm, more particularly 0.85 mm.
Ainsi conçu, l'élément de polissage selon la présente invention permet d'obtenir des résultats surprenants puisque le temps est réduit de 12 mn à 7 ou 8 mn pour une même surface de même profil et en utilisant un même liquide de polissage à l'oxyde d'aluminium.Thus designed, the polishing element according to the present invention makes it possible to obtain surprising results since the time is reduced from 12 min to 7 or 8 min for the same surface of the same profile and by using the same polishing liquid. aluminum oxide.
En plus du gain de temps, on constate aussi que 80% du travail de polissage est réalisé entre 1 et 2 mn tandis que les pads connus ne permettent pas de déceler une amorce de polissage durant cette même période.In addition to saving time, we also note that 80% of the polishing work is carried out between 1 and 2 min while the known pads do not allow to detect a polishing initiation during this same period.
Il y a donc non seulement un gain de temps global mais aussi un gain de rendement.There is therefore not only a gain in overall time but also a gain in efficiency.
Conditions d'essai :
- verre traité : verre organique d'indice 1,6; courbe 4,12 x 4,62 ;
- liquide de polissage : oxyde d'aluminium avec un diamètre de particules de 1,3 µ ;
- pression de polissage : 1,725 bar ;
- durée de polissage : 6 mn.
- treated glass: organic glass of index 1.6; curve 4.12 x 4.62;
- polishing liquid: aluminum oxide with a particle diameter of 1.3 µ;
- polishing pressure: 1.725 bar;
- polishing time: 6 min.
On a mesuré un accroissement d'enlèvement de matière au centre du verre de 16 %, dans les mêmes conditions, par rapport à un pad du commerce ayant le même diamètre et la même forme mais dont les longueurs et diamètres des fibres, notamment, sont différents.We measured an increase in material removal in the center of the glass of 16%, under the same conditions, compared to a commercial pad having the same diameter and the same shape but whose fiber lengths and diameters, in particular, are different.
Claims (10)
- A finishing polishing element for mineral or organic optical glasses, designed to be mounted on a rotating support, with a shape adapted to that of the glass to be polished, comprising a base (10) formed from a polymer film, a fabric or a non-woven fabric, comprising at its surface a flock coating comprising fibres (12) fixed to said base by means of an adhesive (14), characterised in that the fibres are viscose fibres.
- A polishing element according to claim 1, characterised in that the fibres (12) have a length of between 0.3 mm and 1.0 mm, and preferably 0.5 mm.
- A polishing element according to claim 1 or 2, characterised in that the diameter of the fibres (12) is between 5 µm and 25 µm.
- A polishing element according to claim 3, characterised in that the diameter of the fibres (12) is between 15 µm and 25 µm.
- A polishing element according to one of claims 1 to 4, characterised in that the base (10) is produced from polyvinyl chloride whose mass per surface area is between 150 g/m2 and 400 g/m2.
- A polishing element according to claim 5, characterised in that the mass per surface area of the base is 300 g/m2.
- A polishing element according to any one of the preceding claims, characterised in that the adhesive (14) is based on polyvinyl chloride and has a mass per surface area of between 50 and 150 g/m2.
- A polishing element according to claim 7, characterised in that the adhesive (14) has a mass per surface area of 130 g/m2.
- A polishing element according to any one of the preceding claims, characterised in that it is in the form of a disc with a thickness of between 0.8 and 0.9 mm.
- A polishing element according to any one of the preceding claims, characterised in that it is in the form of a disc with lobes.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9907035 | 1999-06-01 | ||
| FR9907035A FR2794390B1 (en) | 1999-06-01 | 1999-06-01 | POLISHING CONSUMABLE ELEMENT, ESPECIALLY FOR FINISHING OPTICAL GLASSES |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1057590A1 EP1057590A1 (en) | 2000-12-06 |
| EP1057590B1 true EP1057590B1 (en) | 2003-09-10 |
Family
ID=9546351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00450008A Expired - Lifetime EP1057590B1 (en) | 1999-06-01 | 2000-05-31 | Consumable polishing element, specially for finishing optical glasses |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1057590B1 (en) |
| AT (1) | ATE249311T1 (en) |
| DE (1) | DE60005085T2 (en) |
| ES (1) | ES2206166T3 (en) |
| FR (1) | FR2794390B1 (en) |
| PT (1) | PT1057590E (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2497438A1 (en) | 2002-09-05 | 2004-03-18 | 3M Innovative Properties Company | Flocked substrates for use as scouring materials |
| FR2862249B1 (en) * | 2003-11-19 | 2006-03-03 | Curt Sas | CONSUMABLE ELEMENT FOR POLISHING, PARTICULARLY FOR THE FINISHING OF OPTICAL LENSES |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4576612A (en) * | 1984-06-01 | 1986-03-18 | Ferro Corporation | Fixed ophthalmic lens polishing pad |
| WO1998045112A1 (en) * | 1997-04-04 | 1998-10-15 | Rodel Holdings, Inc. | Polishing pads and methods relating thereto |
| JPH1158205A (en) * | 1997-08-25 | 1999-03-02 | Unique Technol Internatl Pte Ltd | Electrolytic polishing as well as polishing texture processing device and manufacture thereof and electrolytic polishing as well as polishing texture tapeused thereto |
-
1999
- 1999-06-01 FR FR9907035A patent/FR2794390B1/en not_active Expired - Fee Related
-
2000
- 2000-05-31 AT AT00450008T patent/ATE249311T1/en not_active IP Right Cessation
- 2000-05-31 EP EP00450008A patent/EP1057590B1/en not_active Expired - Lifetime
- 2000-05-31 ES ES00450008T patent/ES2206166T3/en not_active Expired - Lifetime
- 2000-05-31 DE DE60005085T patent/DE60005085T2/en not_active Expired - Lifetime
- 2000-05-31 PT PT00450008T patent/PT1057590E/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ATE249311T1 (en) | 2003-09-15 |
| EP1057590A1 (en) | 2000-12-06 |
| DE60005085D1 (en) | 2003-10-16 |
| PT1057590E (en) | 2004-02-27 |
| FR2794390B1 (en) | 2001-08-17 |
| ES2206166T3 (en) | 2004-05-16 |
| DE60005085T2 (en) | 2004-06-17 |
| FR2794390A1 (en) | 2000-12-08 |
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