DE2447490C2 - Verfahren und Vorrichtung zum Herstellen von weichen Kontaktlinsen - Google Patents
Verfahren und Vorrichtung zum Herstellen von weichen KontaktlinsenInfo
- Publication number
- DE2447490C2 DE2447490C2 DE19742447490 DE2447490A DE2447490C2 DE 2447490 C2 DE2447490 C2 DE 2447490C2 DE 19742447490 DE19742447490 DE 19742447490 DE 2447490 A DE2447490 A DE 2447490A DE 2447490 C2 DE2447490 C2 DE 2447490C2
- Authority
- DE
- Germany
- Prior art keywords
- lens
- edge
- lens surface
- blank
- curved
- 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
Links
- 238000000034 method Methods 0.000 title claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 238000005520 cutting process Methods 0.000 claims description 9
- 238000003754 machining Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 241000251730 Chondrichthyes Species 0.000 claims 1
- 241000512332 Sticherus tener Species 0.000 claims 1
- 241000863032 Trieres Species 0.000 claims 1
- 229920001477 hydrophilic polymer Polymers 0.000 claims 1
- 239000002861 polymer material Substances 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 230000007704 transition Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D11/00—Producing optical elements, e.g. lenses or prisms
- B29D11/00932—Combined cutting and grinding thereof
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ophthalmology & Optometry (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Eyeglasses (AREA)
- Turning (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB4677573A GB1488001A (en) | 1973-10-06 | 1973-10-06 | Contact lenses |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2447490A1 DE2447490A1 (de) | 1975-04-17 |
| DE2447490C2 true DE2447490C2 (de) | 1985-11-07 |
Family
ID=10442545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19742447490 Expired DE2447490C2 (de) | 1973-10-06 | 1974-10-04 | Verfahren und Vorrichtung zum Herstellen von weichen Kontaktlinsen |
Country Status (9)
| Country | Link |
|---|---|
| JP (2) | JPS5641361B2 (enrdf_load_stackoverflow) |
| BE (1) | BE820771A (enrdf_load_stackoverflow) |
| CA (1) | CA1028881A (enrdf_load_stackoverflow) |
| DE (1) | DE2447490C2 (enrdf_load_stackoverflow) |
| ES (1) | ES430697A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2246369B1 (enrdf_load_stackoverflow) |
| GB (1) | GB1488001A (enrdf_load_stackoverflow) |
| IT (1) | IT1022556B (enrdf_load_stackoverflow) |
| NL (1) | NL178852C (enrdf_load_stackoverflow) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6321552U (enrdf_load_stackoverflow) * | 1977-08-02 | 1988-02-12 | ||
| FR2509483A1 (fr) * | 1981-04-15 | 1983-01-14 | Essilor Int | Lentille de contact |
| EP0108118B1 (en) * | 1982-05-14 | 1987-07-22 | CooperVision Optics Limited | Contact lens manufacture |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3112581A (en) * | 1961-02-03 | 1963-12-03 | Hoffman Jacob | Contact lens finishing machine |
| DE1495381B2 (de) * | 1963-09-07 | 1971-06-24 | Czeskoslovenska akademie ved , Prag | Verfahren zur herstellung von kontaktlinsen oder kontakt linsenrohlingen aus quellfaehigen hydrogelen |
| FR2195930A5 (enrdf_load_stackoverflow) * | 1972-08-10 | 1974-03-08 | Bausch & Lomb |
-
1973
- 1973-10-06 GB GB4677573A patent/GB1488001A/en not_active Expired
- 1973-10-06 JP JP11398674A patent/JPS5641361B2/ja not_active Expired
-
1974
- 1974-10-02 IT IT2799474A patent/IT1022556B/it active
- 1974-10-03 CA CA210,694A patent/CA1028881A/en not_active Expired
- 1974-10-04 DE DE19742447490 patent/DE2447490C2/de not_active Expired
- 1974-10-04 ES ES430697A patent/ES430697A1/es not_active Expired
- 1974-10-04 FR FR7433545A patent/FR2246369B1/fr not_active Expired
- 1974-10-04 NL NL7413141A patent/NL178852C/xx not_active IP Right Cessation
- 1974-10-07 BE BE149272A patent/BE820771A/xx not_active IP Right Cessation
-
1980
- 1980-01-21 JP JP464980A patent/JPS56157945A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56157945A (en) | 1981-12-05 |
| FR2246369B1 (enrdf_load_stackoverflow) | 1978-07-07 |
| DE2447490A1 (de) | 1975-04-17 |
| JPS5078339A (enrdf_load_stackoverflow) | 1975-06-26 |
| CA1028881A (en) | 1978-04-04 |
| NL7413141A (nl) | 1975-04-08 |
| GB1488001A (en) | 1977-10-05 |
| ES430697A1 (es) | 1977-04-16 |
| IT1022556B (it) | 1978-04-20 |
| NL178852C (nl) | 1986-06-02 |
| JPS5641361B2 (enrdf_load_stackoverflow) | 1981-09-28 |
| NL178852B (nl) | 1986-01-02 |
| BE820771A (fr) | 1975-02-03 |
| FR2246369A1 (enrdf_load_stackoverflow) | 1975-05-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OD | Request for examination | ||
| 8127 | New person/name/address of the applicant |
Owner name: COOPERVISION (U.K.) LTD., SOUTHAMTON, HAMPSHIRE, G |
|
| 8128 | New person/name/address of the agent |
Representative=s name: ZELLENTIN, R., DIPL.-GEOLOGE DR.RER.NAT., 8000 MUE |
|
| D2 | Grant after examination | ||
| 8327 | Change in the person/name/address of the patent owner |
Owner name: COOPERVISION INC., MENLO PARK, CALIF., US |
|
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |