GB1441740A - Moulding of progressive ophthalmic lenses of organic glass - Google Patents
Moulding of progressive ophthalmic lenses of organic glassInfo
- Publication number
- GB1441740A GB1441740A GB1194675A GB1194675A GB1441740A GB 1441740 A GB1441740 A GB 1441740A GB 1194675 A GB1194675 A GB 1194675A GB 1194675 A GB1194675 A GB 1194675A GB 1441740 A GB1441740 A GB 1441740A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spherical
- concave face
- blank
- moulding
- face
- 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
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
- B29D11/00009—Production of simple or compound lenses
- B29D11/00019—Production of simple or compound lenses with non-spherical faces, e.g. toric faces
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Ophthalmology & Optometry (AREA)
- Mechanical Engineering (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Eyeglasses (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7411177A FR2265515B1 (e) | 1974-03-29 | 1974-03-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1441740A true GB1441740A (en) | 1976-07-07 |
Family
ID=9137063
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1194675A Expired GB1441740A (en) | 1974-03-29 | 1975-03-21 | Moulding of progressive ophthalmic lenses of organic glass |
Country Status (5)
Country | Link |
---|---|
US (1) | US4018587A (e) |
JP (1) | JPS5746417B2 (e) |
DE (1) | DE2513794C2 (e) |
FR (1) | FR2265515B1 (e) |
GB (1) | GB1441740A (e) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2329427A1 (fr) * | 1975-10-30 | 1977-05-27 | Essilor Int | Procede pour la realisation d'une lentille ophtalmique a puissance focale progressivement variable, et palet semi-fini formant un produit intermediaire dans ce procede |
DE3117474A1 (de) * | 1981-05-02 | 1982-11-18 | Fa. Carl Zeiss, 7920 Heidenheim | Verfahren und vorrichtung zum herstellen von formteilen mit asphaerischen oberflaechen |
DE3813507A1 (de) * | 1988-04-22 | 1989-11-02 | Walter Vieweg | Optische hilfsmittel, und befestigung derer, zur korrektion von fehlsichtigkeiten, insbesondere bei schwimm- und taucherbrillen |
US5141678A (en) * | 1990-10-10 | 1992-08-25 | Blum Ronald D | Method for forming disposable molds for producing optical quality lenses |
US5583589A (en) * | 1995-07-07 | 1996-12-10 | Phillips Lens Co., Inc. | Process for forming a monocentric seamless bifocal lens |
CN101312920B (zh) * | 2005-11-18 | 2013-02-13 | Hoya株式会社 | 成形品的制造方法、玻璃坯料、以及玻璃坯料及成形模型的面形状决定方法 |
US9242889B2 (en) * | 2005-11-18 | 2016-01-26 | Hoya Corporation | Method of manufacturing formed article, glass material, and method of determining shape of glass material and mold |
US8197727B2 (en) * | 2005-11-30 | 2012-06-12 | Hoya Corporation | Method of manufacturing formed article, covering member, and forming apparatus comprising the same |
JP4623012B2 (ja) * | 2006-02-22 | 2011-02-02 | セイコーエプソン株式会社 | 多焦点レンズの製造方法 |
EP2298706A1 (en) * | 2008-05-30 | 2011-03-23 | Hoya Corporation | Method for manufacturing lens forming die |
EP2402132A4 (en) * | 2009-02-27 | 2014-10-15 | Hoya Corp | DEVICE FOR PRODUCING A FORM FOR A LENS AND METHOD FOR PRODUCING A GLASS GLASS |
US8641937B2 (en) * | 2009-02-27 | 2014-02-04 | Hoya Corporation | Method of manufacturing lens casting mold and method of manufacturing eyeglass lens |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US901659A (en) * | 1908-03-02 | 1908-10-20 | Frederick A Stevens | Method of making bifocal lenses. |
US1619341A (en) * | 1925-08-10 | 1927-03-01 | American Optical Corp | Ophthalmic lens |
US2015007A (en) * | 1933-04-04 | 1935-09-17 | United Kingdom Optical Company | Manufacture of lenses and glasses |
US2394934A (en) * | 1942-04-25 | 1946-02-12 | Libbey Owens Ford Glass Co | Process of producing ophthalmic lenses |
US2482698A (en) * | 1943-05-06 | 1949-09-20 | American Optical Corp | Optical lens means having a nonspherical refracting surface |
US2890486A (en) * | 1955-08-29 | 1959-06-16 | American Optical Corp | Mold for producing lens of any shape from a polymerizable material |
US3297422A (en) * | 1963-04-05 | 1967-01-10 | Unvivis Inc | Method of making molds for multifocal ophthalmic lenses |
GB1163002A (en) * | 1966-05-06 | 1969-09-04 | Kirk Optical Lens Co Inc | Light transmitting element. |
US3889431A (en) * | 1973-09-04 | 1975-06-17 | Celestron Pacific | Method for making schmidt corrector lenses |
US3946982A (en) * | 1974-09-03 | 1976-03-30 | Textron, Inc. | Adjustable mold for direct casting of plastic multifocal lenses |
-
1974
- 1974-03-29 FR FR7411177A patent/FR2265515B1/fr not_active Expired
-
1975
- 1975-03-21 GB GB1194675A patent/GB1441740A/en not_active Expired
- 1975-03-25 US US05/562,038 patent/US4018587A/en not_active Expired - Lifetime
- 1975-03-27 DE DE2513794A patent/DE2513794C2/de not_active Expired
- 1975-03-28 JP JP50037698A patent/JPS5746417B2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2265515A1 (e) | 1975-10-24 |
DE2513794C2 (de) | 1984-10-04 |
JPS50134447A (e) | 1975-10-24 |
DE2513794A1 (de) | 1975-10-09 |
JPS5746417B2 (e) | 1982-10-02 |
FR2265515B1 (e) | 1976-10-08 |
US4018587A (en) | 1977-04-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |