FR2134094A1 - Synthetic plastic correction lenses - Google Patents

Synthetic plastic correction lenses

Info

Publication number
FR2134094A1
FR2134094A1 FR7113789A FR7113789A FR2134094A1 FR 2134094 A1 FR2134094 A1 FR 2134094A1 FR 7113789 A FR7113789 A FR 7113789A FR 7113789 A FR7113789 A FR 7113789A FR 2134094 A1 FR2134094 A1 FR 2134094A1
Authority
FR
France
Prior art keywords
lenses
polarising
pref
mould
correction
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.)
Granted
Application number
FR7113789A
Other languages
French (fr)
Other versions
FR2134094B1 (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.)
Polaroid Corp
Original Assignee
Polaroid Corp
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 Polaroid Corp filed Critical Polaroid Corp
Priority to FR7113789A priority Critical patent/FR2134094A1/en
Publication of FR2134094A1 publication Critical patent/FR2134094A1/en
Application granted granted Critical
Publication of FR2134094B1 publication Critical patent/FR2134094B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • 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
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/0073—Optical laminates
    • 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
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00634—Production of filters
    • B29D11/00644—Production of filters polarizing

Landscapes

  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Eyeglasses (AREA)

Abstract

Polarising correction lenses are mfd. by placing polarising element in a mould, injecting a synthetic monomer on each side of the element, polymerising the monomer and extracting the composite lens from the mould. The polarising element is pref. formed from a transparent sheet of polyvinyl alcohol contg. a proportion of oriented molecules of dehydrated alcohol, opt. polyvinyl butyral or mixts. are used. The outer elements are moulded from methyl methacrylate or cellulose derivs., pref. cellulose acetobutyrate. A polyvinyl alcohol adhesive is used to cement the layers. Thermosetting monomers such as diethylene glycol bis-allyl carbonate are used for the outer layers. The faces of the lenses are concave and convex respectively and are ground and polished to an exact configuration. Plastic lenses are mass produced by moulding and used as such without finishing, or correction by grinding and polishing.
FR7113789A 1971-04-19 1971-04-19 Synthetic plastic correction lenses Granted FR2134094A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7113789A FR2134094A1 (en) 1971-04-19 1971-04-19 Synthetic plastic correction lenses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7113789A FR2134094A1 (en) 1971-04-19 1971-04-19 Synthetic plastic correction lenses

Publications (2)

Publication Number Publication Date
FR2134094A1 true FR2134094A1 (en) 1972-12-08
FR2134094B1 FR2134094B1 (en) 1978-03-10

Family

ID=9075511

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7113789A Granted FR2134094A1 (en) 1971-04-19 1971-04-19 Synthetic plastic correction lenses

Country Status (1)

Country Link
FR (1) FR2134094A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2183108A1 (en) * 1972-05-02 1973-12-14 Polaroid Corp
FR2183109A1 (en) * 1972-05-02 1973-12-14 Polaroid Corp
EP1739462A1 (en) * 2004-04-19 2007-01-03 Sunlux Co., Ltd. Polarizing plastic optical device and process for producing the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2183108A1 (en) * 1972-05-02 1973-12-14 Polaroid Corp
FR2183109A1 (en) * 1972-05-02 1973-12-14 Polaroid Corp
EP1739462A1 (en) * 2004-04-19 2007-01-03 Sunlux Co., Ltd. Polarizing plastic optical device and process for producing the same
EP1739462A4 (en) * 2004-04-19 2010-11-24 Sunlux Co Ltd Polarizing plastic optical device and process for producing the same
US8147946B2 (en) 2004-04-19 2012-04-03 Sunlux Co., Ltd. Polarizing plastic optical device and process for producing the same

Also Published As

Publication number Publication date
FR2134094B1 (en) 1978-03-10

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Legal Events

Date Code Title Description
ST Notification of lapse