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IE791245L - Producing lenses - Google Patents

Producing lenses

Info

Publication number
IE791245L
IE791245L IE791245A IE124579A IE791245L IE 791245 L IE791245 L IE 791245L IE 791245 A IE791245 A IE 791245A IE 124579 A IE124579 A IE 124579A IE 791245 L IE791245 L IE 791245L
Authority
IE
Ireland
Prior art keywords
mold
monomer
lenses
air
producing lenses
Prior art date
Application number
IE791245A
Other versions
IE48438B1 (en
Original Assignee
It Lenti S I L S R L Soc
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 It Lenti S I L S R L Soc filed Critical It Lenti S I L S R L Soc
Publication of IE791245L publication Critical patent/IE791245L/en
Publication of IE48438B1 publication Critical patent/IE48438B1/en

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
    • B29D11/00413—Production of simple or compound lenses made by moulding between two mould parts which are not in direct contact with one another, e.g. comprising a seal between or on the edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/0038—Moulds or cores; Details thereof or accessories therefor with sealing means or the like
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G02B1/041—Lenses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/76—Office equipment or accessories
    • B29L2031/7602—Maps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Lenses (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

Lenses made of synthetic resins are made by casting a catalyzed monomer which is polymerized up to the hardening point by warming it within a mold formed from two or more glass lenses, assembled together by means of a perimetric gasket and a spring, wherein the shrinkage of the polymer being formed is compensated through catalyzed monomer kept in presence of air outside of the mold, from where it may flow into the interior of the mold in which there is no air. The monomer may be diethylene- glycol-bis-alkyl-carbonate. [GB2021474A]
IE1245/79A 1978-05-12 1979-08-08 A process for producing lenses or other optical means IE48438B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT23319/78A IT1094754B (en) 1978-05-12 1978-05-12 PROCESS FOR THE MANUFACTURE BY CONTINUOUS COMPENSATION CASTING OF LENSES OR OPTICAL MEDIA IN POLYMERIZABLE SYNTHETIC RESINS

Publications (2)

Publication Number Publication Date
IE791245L true IE791245L (en) 1979-11-12
IE48438B1 IE48438B1 (en) 1985-01-23

Family

ID=11206027

Family Applications (1)

Application Number Title Priority Date Filing Date
IE1245/79A IE48438B1 (en) 1978-05-12 1979-08-08 A process for producing lenses or other optical means

Country Status (22)

Country Link
JP (1) JPS54149765A (en)
AT (1) AT391296B (en)
AU (1) AU526381B2 (en)
BE (1) BE876149A (en)
BR (1) BR7902929A (en)
CA (1) CA1135913A (en)
CH (1) CH641402A5 (en)
DE (2) DE2918323A1 (en)
DK (1) DK162590C (en)
ES (1) ES480497A1 (en)
FR (1) FR2425314A1 (en)
GB (1) GB2021474B (en)
GR (1) GR67597B (en)
HK (1) HK73587A (en)
IE (1) IE48438B1 (en)
IL (1) IL57252A0 (en)
IT (1) IT1094754B (en)
LU (1) LU81249A1 (en)
MX (1) MX151517A (en)
NL (1) NL7903713A (en)
NO (1) NO162009C (en)
SE (1) SE432219B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1191569B (en) * 1986-02-28 1988-03-23 Nuova Sil Spa MOLD FOR THE PRODUCTION THROUGH CASTING OF ORGANIC LENSES
US6511311B1 (en) 1998-09-30 2003-01-28 Novartis Ag Lens mold carriers
AU6197599A (en) * 1998-09-30 2000-04-17 Novartis Ag Lens mold carriers

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1166582A (en) * 1955-12-30 1958-11-13 Combined Optical Ind Ltd Method and apparatus for molding lenses and other precision optical elements
FR1204627A (en) * 1958-04-25 1960-01-27 Lentilles Ophtalmiques Special Improvements in the manufacture of optical and ophthalmic lenses in thermosetting synthetic resins
US3171869A (en) * 1959-12-07 1965-03-02 Bausch & Lomb Process for manufacturing curved optical articles
US3251908A (en) * 1962-12-05 1966-05-17 Computing Devices Canada Method and apparatus for making a curved surface
DE2303551C3 (en) * 1973-01-25 1981-05-14 Transformatoren Union Ag, 7000 Stuttgart Plant for the production of castings from synthetic resin in the die casting process
DE2312934C3 (en) * 1973-03-15 1980-01-24 Et. Dentaire Ivoclar, Schaan (Liechtenstein) Method and device for the production of dental prostheses made of plastic
GB1511901A (en) * 1974-05-06 1978-05-24 Bausch & Lomb Forming lenses and lens blanks
US4008031A (en) * 1975-08-22 1977-02-15 Weber Hermann P Apparatus for injection molding lenses

Also Published As

Publication number Publication date
IE48438B1 (en) 1985-01-23
BR7902929A (en) 1979-12-04
GR67597B (en) 1981-08-31
NO162009B (en) 1989-07-17
ES480497A1 (en) 1979-12-16
CH641402A5 (en) 1984-02-29
NO162009C (en) 1989-10-25
GB2021474B (en) 1982-08-11
FR2425314B1 (en) 1984-01-13
DE2954548C2 (en) 1992-07-23
GB2021474A (en) 1979-12-05
DE2918323A1 (en) 1979-12-06
AU4703279A (en) 1979-11-29
DK162590B (en) 1991-11-18
ATA334779A (en) 1990-03-15
AU526381B2 (en) 1983-01-06
NL7903713A (en) 1979-11-14
BE876149A (en) 1979-09-03
HK73587A (en) 1987-10-16
NO791516L (en) 1979-11-13
CA1135913A (en) 1982-11-23
DK162590C (en) 1992-04-06
IL57252A0 (en) 1979-09-30
MX151517A (en) 1984-12-10
FR2425314A1 (en) 1979-12-07
SE7904019L (en) 1979-11-13
IT1094754B (en) 1985-08-02
LU81249A1 (en) 1979-09-10
DK195179A (en) 1979-11-13
AT391296B (en) 1990-09-10
IT7823319A0 (en) 1978-05-12
JPS54149765A (en) 1979-11-24
SE432219B (en) 1984-03-26

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Legal Events

Date Code Title Description
MM4A Patent lapsed