FR2134094A1 - Synthetic plastic correction lenses - Google Patents
Synthetic plastic correction lensesInfo
- 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
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.
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)
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 |
-
1971
- 1971-04-19 FR FR7113789A patent/FR2134094A1/en active Granted
Cited By (5)
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 |