FR1018486A - Fabrication d'éléments optiques axialement symétriques - Google Patents

Fabrication d'éléments optiques axialement symétriques

Info

Publication number
FR1018486A
FR1018486A FR1018486DA FR1018486A FR 1018486 A FR1018486 A FR 1018486A FR 1018486D A FR1018486D A FR 1018486DA FR 1018486 A FR1018486 A FR 1018486A
Authority
FR
France
Prior art keywords
manufacture
optical elements
axially symmetrical
symmetrical optical
axially
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
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Application granted granted Critical
Publication of FR1018486A publication Critical patent/FR1018486A/fr
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
    • B29D11/0048—Moulds for lenses
    • B29D11/00528—Consisting of two mould halves joined by an annular gasket
    • 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
    • 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
    • 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)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Ophthalmology & Optometry (AREA)
FR1018486D 1949-05-13 1950-05-12 Fabrication d'éléments optiques axialement symétriques Expired FR1018486A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1018486X 1949-05-13

Publications (1)

Publication Number Publication Date
FR1018486A true FR1018486A (fr) 1953-01-08

Family

ID=10868329

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1018486D Expired FR1018486A (fr) 1949-05-13 1950-05-12 Fabrication d'éléments optiques axialement symétriques

Country Status (1)

Country Link
FR (1) FR1018486A (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1146623B (de) * 1959-01-22 1963-04-04 Corning Glass Works Verfahren und Vorrichtung zum Pressen von Glasgegenstaenden
US3240854A (en) * 1961-09-08 1966-03-15 Laubman & Pank Ltd Manufacture of mouldable plastic articles
FR2390264A1 (fr) * 1977-05-13 1978-12-08 Techsight Corp Procede et dispositif pour mouler des lentilles en matiere plastique
FR2462988A1 (fr) * 1979-08-10 1981-02-20 American Optical Corp Joint pour le moulage de lentilles
EP0674989A1 (fr) * 1994-03-29 1995-10-04 ESSILOR INTERNATIONAL (Compagnie Générale d'Optique) Procédé pour la constitution d'un moule propre à l'obtention d'une lentille optique, moule correspondant et lentille optique obtenue

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1146623B (de) * 1959-01-22 1963-04-04 Corning Glass Works Verfahren und Vorrichtung zum Pressen von Glasgegenstaenden
US3240854A (en) * 1961-09-08 1966-03-15 Laubman & Pank Ltd Manufacture of mouldable plastic articles
FR2390264A1 (fr) * 1977-05-13 1978-12-08 Techsight Corp Procede et dispositif pour mouler des lentilles en matiere plastique
FR2462988A1 (fr) * 1979-08-10 1981-02-20 American Optical Corp Joint pour le moulage de lentilles
EP0674989A1 (fr) * 1994-03-29 1995-10-04 ESSILOR INTERNATIONAL (Compagnie Générale d'Optique) Procédé pour la constitution d'un moule propre à l'obtention d'une lentille optique, moule correspondant et lentille optique obtenue
FR2718075A1 (fr) * 1994-03-29 1995-10-06 Essilor Int Procédé pour la constitution d'un moule propre à l'obtention d'une lentille optique, moule correspondant et lentille optique obtenue.
US5611969A (en) * 1994-03-29 1997-03-18 Essilor International, Compagnie Generale D'optique Optical lens mold and method of making the mold

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