GB1441740A - Moulding of progressive ophthalmic lenses of organic glass - Google Patents

Moulding of progressive ophthalmic lenses of organic glass

Info

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
Application number
GB1194675A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EssilorLuxottica SA
Original Assignee
Essilor International Compagnie Generale dOptique SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Essilor International Compagnie Generale dOptique SA filed Critical Essilor International Compagnie Generale dOptique SA
Publication of GB1441740A publication Critical patent/GB1441740A/en
Expired legal-status Critical Current

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)
  • Eyeglasses (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
GB1194675A 1974-03-29 1975-03-21 Moulding of progressive ophthalmic lenses of organic glass Expired GB1441740A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7411177A FR2265515B1 (enExample) 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 (enExample)
JP (1) JPS5746417B2 (enExample)
DE (1) DE2513794C2 (enExample)
FR (1) FR2265515B1 (enExample)
GB (1) GB1441740A (enExample)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
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
BRPI0618657A2 (pt) * 2005-11-18 2012-12-04 Hoya Corp método de fabricação de um artigo conformado, material de vidro para uso em um método de conformação, e, método de determinação de uma forma de uma superfìcie
JP5121460B2 (ja) * 2005-11-30 2013-01-16 Ｈｏｙａ株式会社 成形品の製造方法、閉塞部材およびそれを含む成形装置
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
US20110133352A1 (en) * 2008-05-30 2011-06-09 Hoya Corporation Method of manufacturing lens casting mold
EP2402133A4 (en) * 2009-02-27 2014-10-15 Hoya Corp DEVICE FOR PRODUCING A FORM FOR A LENS AND METHOD FOR PRODUCING A GLASS GLASS
CN102413999A (zh) * 2009-02-27 2012-04-11 Hoya株式会社 透镜用铸模的制造方法及眼镜透镜的制造方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
FR2265515A1 (enExample) 1975-10-24
DE2513794C2 (de) 1984-10-04
JPS50134447A (enExample) 1975-10-24
US4018587A (en) 1977-04-19
JPS5746417B2 (enExample) 1982-10-02
FR2265515B1 (enExample) 1976-10-08
DE2513794A1 (de) 1975-10-09

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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