Nothing Special   »   [go: up one dir, main page]

FR2248527A1 - Extensible corneal lenses of rigid plastic material - incorporating narrow hinge zones of flexible material - Google Patents

Extensible corneal lenses of rigid plastic material - incorporating narrow hinge zones of flexible material

Info

Publication number
FR2248527A1
FR2248527A1 FR7337304A FR7337304A FR2248527A1 FR 2248527 A1 FR2248527 A1 FR 2248527A1 FR 7337304 A FR7337304 A FR 7337304A FR 7337304 A FR7337304 A FR 7337304A FR 2248527 A1 FR2248527 A1 FR 2248527A1
Authority
FR
France
Prior art keywords
lenses
rigid plastic
extensible
plastic material
flexible material
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
FR7337304A
Other languages
French (fr)
Other versions
FR2248527B1 (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.)
LAGOUCHE PIERRE FR
Original Assignee
LAGOUCHE PIERRE FR
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 LAGOUCHE PIERRE FR filed Critical LAGOUCHE PIERRE FR
Priority to FR7337304A priority Critical patent/FR2248527A1/en
Publication of FR2248527A1 publication Critical patent/FR2248527A1/en
Application granted granted Critical
Publication of FR2248527B1 publication Critical patent/FR2248527B1/fr
Granted 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
    • 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
    • B29D11/00028—Bifocal lenses; Multifocal 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
    • B29D11/00038—Production of contact lenses
    • B29D11/00048—Production of contact lenses composed of parts with dissimilar composition
    • 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
    • G02C7/04—Contact lenses for the eyes

Landscapes

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

Abstract

Composite lenses incorporating a central disc surrounded by two concentric annula zones made substantially of rigid plastic material but connected by regions of optically neutral but flexible material which allow the radius of curvature of the lens to be altered by relative axial deflection. For mfr. of 'soft' contact lenses which can adapt to changes in the configuration or the optical performance of the supporting eyeball. The predominantly rigid, non absorbent lenses, are not sensitive to the degree of nature of local moisture, yet are almost as adaptable as conventional soft lenses.
FR7337304A 1973-10-19 1973-10-19 Extensible corneal lenses of rigid plastic material - incorporating narrow hinge zones of flexible material Granted FR2248527A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7337304A FR2248527A1 (en) 1973-10-19 1973-10-19 Extensible corneal lenses of rigid plastic material - incorporating narrow hinge zones of flexible material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7337304A FR2248527A1 (en) 1973-10-19 1973-10-19 Extensible corneal lenses of rigid plastic material - incorporating narrow hinge zones of flexible material

Publications (2)

Publication Number Publication Date
FR2248527A1 true FR2248527A1 (en) 1975-05-16
FR2248527B1 FR2248527B1 (en) 1977-05-27

Family

ID=9126649

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7337304A Granted FR2248527A1 (en) 1973-10-19 1973-10-19 Extensible corneal lenses of rigid plastic material - incorporating narrow hinge zones of flexible material

Country Status (1)

Country Link
FR (1) FR2248527A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4401371A (en) * 1979-09-24 1983-08-30 Neefe Charles W Hydrogel oxygen generator with improved fluid flow
US4640594A (en) * 1982-01-07 1987-02-03 Richard Berger Tear pump contact lens
US5166710A (en) * 1990-01-24 1992-11-24 Ciba-Geigy Corporation Contact lens and process for the manufacture thereof
WO2002061497A1 (en) * 2001-01-31 2002-08-08 Clearlab Pte. Ltd. A soft contact lens capable of engagement with an eye either right way out or inside out
EP1315995A1 (en) * 2000-07-28 2003-06-04 Ocular Sciences Inc. Contact lenses with microchannels
US7080905B2 (en) 2000-07-28 2006-07-25 Coopervision, Inc. Contact lenses with blended microchannels

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4401371A (en) * 1979-09-24 1983-08-30 Neefe Charles W Hydrogel oxygen generator with improved fluid flow
US4640594A (en) * 1982-01-07 1987-02-03 Richard Berger Tear pump contact lens
US5166710A (en) * 1990-01-24 1992-11-24 Ciba-Geigy Corporation Contact lens and process for the manufacture thereof
EP1315995A1 (en) * 2000-07-28 2003-06-04 Ocular Sciences Inc. Contact lenses with microchannels
EP1315995A4 (en) * 2000-07-28 2005-02-09 Ocular Sciences Inc Contact lenses with microchannels
US7080905B2 (en) 2000-07-28 2006-07-25 Coopervision, Inc. Contact lenses with blended microchannels
US7249849B2 (en) 2000-07-28 2007-07-31 Coopervision, Inc. Contact lenses with blended microchannels
WO2002061497A1 (en) * 2001-01-31 2002-08-08 Clearlab Pte. Ltd. A soft contact lens capable of engagement with an eye either right way out or inside out
US7021760B2 (en) 2001-01-31 2006-04-04 Clearlab Pte Ltd. Soft contact lens capable of engagement with an eye either right way out or inside out
AU2002229400B2 (en) * 2001-01-31 2007-03-01 Menicon Co., Ltd. A soft contact lens capable of engagement with an eye either right way out or inside out
CN1308733C (en) * 2001-01-31 2007-04-04 明视国际私人有限公司 A soft contact lens capable of engagement with an eye either right way out or inside out

Also Published As

Publication number Publication date
FR2248527B1 (en) 1977-05-27

Similar Documents

Publication Publication Date Title
US3594074A (en) Contact lens with flexible central portion
US3973838A (en) Contact lenses
US2576581A (en) Polyfocal spectacles
FI831399L (en) KONTAKTLINS AV HAERDAD POLYVINYL ALCOHOL
ATE219839T1 (en) GLASSES WITH VARIABLE FOCAL LENGTH LENSES AND ANY EDGE SHAPE
CA2035102A1 (en) Contact lens for correction of astigmatism
AR246621A1 (en) Multifocal ophthalmic lens
BR8002832A (en) LENS MOLDING GASKET SET, OPTICAL OR OPHTHALMIC LENS ASSEMBLY PROCESS AND LENS FORMING PROCESS FROM A LIQUID MOLDING COMPOSITION
NO152794C (en) BIOMEDICAL DEVICE, EX. AN OPTICAL CONTACT LENS, AN INTRAOCCULAR LENS, A HEART VALVE OR A MEDICAL CONNECTION FORM, MADE OF A POLYSILOXAN BASE MATERIAL.
SE7910277L (en) CONTACT LENS
EP0042679A3 (en) Composite contact lens
FR2248527A1 (en) Extensible corneal lenses of rigid plastic material - incorporating narrow hinge zones of flexible material
ATE115741T1 (en) MULTIFOCAL LENS.
GB1173515A (en) Contact Lens.
IE820195L (en) Contact lenses
FR2366349A1 (en) COMPOSITION CONTAINING EXACARBONYL TUNGSTENE AND APPLICATION IN PHOTOCHROME PLASTIC LENSES
US4386832A (en) Adjustable luminous intensity sun glasses
US3212097A (en) Truncated prism ballast contact lens with indentation and fluid drainage channel at bottom edge
CA964908A (en) Low refractive index contact lenses
DE68903199D1 (en) OPHTHALMIC GLASS LENSES WITH COLORABLE COATINGS.
AU592899B2 (en) Skiing goggles, protective goggles, motorcyclist's helmet visor and the like
IT7920519V0 (en) FLEXIBLE HINGE, SUITABLE TO CONCRETIZE THE ELASTIC CONNECTION OF THE TEMPLES WITH THE FRONT OF THE GLASSES.
ES8400927A1 (en) Contact lenses of polyvinyl alcohol cross-linked by borate.
GB967148A (en) Improvements in or relating to moulds for the production of optical elements
JPS581335Y2 (en) underwater glasses

Legal Events

Date Code Title Description
ST Notification of lapse