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WO1999013361B1 - Progressive, multifocal ophthalmic lens having constant geometry and variable refraction index - Google Patents

Progressive, multifocal ophthalmic lens having constant geometry and variable refraction index

Info

Publication number
WO1999013361B1
WO1999013361B1 PCT/EP1998/005613 EP9805613W WO9913361B1 WO 1999013361 B1 WO1999013361 B1 WO 1999013361B1 EP 9805613 W EP9805613 W EP 9805613W WO 9913361 B1 WO9913361 B1 WO 9913361B1
Authority
WO
WIPO (PCT)
Prior art keywords
area
sight
refraction index
value
optical
Prior art date
Application number
PCT/EP1998/005613
Other languages
French (fr)
Other versions
WO1999013361A1 (en
Inventor
Graziano Bianco
Original Assignee
Graziano Bianco
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 Graziano Bianco filed Critical Graziano Bianco
Priority to AU94399/98A priority Critical patent/AU9439998A/en
Publication of WO1999013361A1 publication Critical patent/WO1999013361A1/en
Publication of WO1999013361B1 publication Critical patent/WO1999013361B1/en

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/10—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
    • B29D11/00028—Bifocal lenses; Multifocal lenses
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B19/00—Other methods of shaping glass
    • C03B19/09—Other methods of shaping glass by fusing powdered glass in a shaping mould
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/0087—Simple or compound lenses with index gradient
    • 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
    • G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
    • G02C7/061—Spectacle lenses with progressively varying focal power
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C2202/00—Generic optical aspects applicable to one or more of the subgroups of G02C7/00
    • G02C2202/12—Locally varying refractive index, gradient index lenses

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Health & Medical Sciences (AREA)
  • Optics & Photonics (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Eyeglasses (AREA)
  • Prostheses (AREA)

Abstract

Progressive, multifocal ophthalmic lens, characterized by the fact of having more optical areas among which the dioptric progression one is made of an optical material having a variable refraction index so that this progression area starting by an end having the refraction index value of the material forming the lens in the far sight area progressively reaches at the other end the refraction index of the material forming the lens in the near sight area, thus obtaining, when the lens surface is shaped according to monofocal curves, the following three optical areas: an optical area (a) having dioptric value for far sight, an optical area (c) having dioptric value for near sight, an optical progression area (b), placed between the far sight and the near sight, in which progression area the dioptric value changes from the far sight value to the near sight value owing to the continuous variation of the refractive index.

Claims

AMENDED CLAIMS[received by the International Bureau on 22 April 1999 (22.04.99); original claims 1-5 amended (2 pages)]
1. Progressive, multifocal ophthalmic lens made of glass, characterized by the fact of having at least three optical areas among which the dioptric progression one is made of glass having a variable refraction index so that this progression area starting by an end having the refraction index value of the material forming the lens in the far sight area progressively increases thus reaching at the other end the refraction index of the material forming the lens in the near sight area, thus obtaining, when the lens surface is shaped according to monofocal curves, at least the following three optical areas: - an optical area having dioptric value for far sight, - an optical area having dioptric value for near sight, - an optical progression area, placed between the far sight and the near sight, in which progression area the dioptric value changes from the far sight value to the near sight value owing to the continuous increase of the refractive index.
2. Method to obtain the lens according to claim 1 carried out by shaping the lens surface through spherical, toric, constant geometry curves that means in the same way in which the monofocal lenses are manufactured, starting from a "rough block" made of at least three different material areas, at least one area of which is characterized by the fact of having the variable refraction index as stated in claim 1 .
3. Element made of glass having a variable refraction index for optical and/or ophthalmic use.
4. Process for manufacturing the progressive, multifocal ophthalmic lens according to claim 1 , starting from a rough-block of glass which block shows at least three different optical areas, the first area, suitable for far sight, being made of glass of refraction index n1 f the third area suitable for near sight being made of glass of refraction index n3, the second area placed between the first and the third area, suitable for intermediate distance sight being made of glass of refraction index n2 progressively changing from n1 to n3. 13
5. Process for manufacturing the ophthalmic lens according to claim 1 wherein the progression area, having variable refraction index ranging from the value n., to the value n3, is obtained by feeding granules of material of refractive index n., and granules of material of refractive index n3 in a container through a granules feeding device which controls the amount of the two material in a progressively varying ratio of the two materials and the settled mixture of the granules is subsequently subjected to a merging through melting treatment.
6. Process for manufacturing the ophthalmic lens according to claim 5 wherein the settled mixture of the granules is moistened by capillarity with deionized water and the whole moistened material is frozen in order to block the settled granules before subjecting to a merging through melting treatment.
PCT/EP1998/005613 1997-09-09 1998-09-04 Progressive, multifocal ophthalmic lens having constant geometry and variable refraction index WO1999013361A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU94399/98A AU9439998A (en) 1997-09-09 1998-09-04 Progressive, multifocal ophthalmic lens having constant geometry and variable refraction index

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT97MI002047A ITMI972047A1 (en) 1997-09-09 1997-09-09 PROGRESSIVE MULTIPOLAR OPHTHALMIC LENS WITH CONSTANT GEOMETRY AND VARIABLE GRADIENT (REFRACTION INDEX NO.)
ITMI97A002047 1997-09-09

Publications (2)

Publication Number Publication Date
WO1999013361A1 WO1999013361A1 (en) 1999-03-18
WO1999013361B1 true WO1999013361B1 (en) 1999-06-17

Family

ID=11377840

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/005613 WO1999013361A1 (en) 1997-09-09 1998-09-04 Progressive, multifocal ophthalmic lens having constant geometry and variable refraction index

Country Status (3)

Country Link
AU (1) AU9439998A (en)
IT (1) ITMI972047A1 (en)
WO (1) WO1999013361A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7503651B2 (en) 2001-10-25 2009-03-17 Ophthonix, Inc. Eyeglass manufacturing method using variable index layer
US7524059B2 (en) 1999-07-02 2009-04-28 E-Vision, Llc System, apparatus and method for correcting vision with an adaptive optic

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7293871B2 (en) 2000-11-27 2007-11-13 Ophthonix, Inc. Apparatus and method of correcting higher-order aberrations of the human eye
US6813082B2 (en) 2000-11-27 2004-11-02 Ophthonix, Inc. Wavefront aberrator and method of manufacturing
US7217375B2 (en) 2001-06-04 2007-05-15 Ophthonix, Inc. Apparatus and method of fabricating a compensating element for wavefront correction using spatially localized curing of resin mixtures
US7014317B2 (en) 2001-11-02 2006-03-21 Essilor International (Compagnie Generale D'optique) Method for manufacturing multifocal lenses
US7735998B2 (en) 2006-10-25 2010-06-15 Volk Donald A Multi-layered multifocal lens with blended refractive index
US7740354B2 (en) 2006-10-25 2010-06-22 Volk Donald A Multi-layered gradient index progressive lens
EP3352001B1 (en) * 2017-01-20 2023-03-29 Carl Zeiss Vision International GmbH Progressive spectacle lens having a variable refractive index and method of designing and producing same
EP3740814B1 (en) 2018-01-19 2024-02-14 Carl Zeiss Vision International GmbH Progressive spectacle lens having a variable refractive index and method of designing and producing same
EP3598213A1 (en) * 2018-07-20 2020-01-22 Carl Zeiss Vision International GmbH Varifocal spectacle lens with a spatially varying refractive index
US11529230B2 (en) 2019-04-05 2022-12-20 Amo Groningen B.V. Systems and methods for correcting power of an intraocular lens using refractive index writing
US12377622B2 (en) 2019-04-05 2025-08-05 Amo Groningen B.V. Systems and methods for vergence matching with an optical profile and using refractive index writing
US11583389B2 (en) 2019-04-05 2023-02-21 Amo Groningen B.V. Systems and methods for correcting photic phenomenon from an intraocular lens and using refractive index writing
US11944574B2 (en) 2019-04-05 2024-04-02 Amo Groningen B.V. Systems and methods for multiple layer intraocular lens and using refractive index writing
US11678975B2 (en) 2019-04-05 2023-06-20 Amo Groningen B.V. Systems and methods for treating ocular disease with an intraocular lens and refractive index writing
US11583388B2 (en) 2019-04-05 2023-02-21 Amo Groningen B.V. Systems and methods for spectacle independence using refractive index writing with an intraocular lens
US12357509B2 (en) 2019-04-05 2025-07-15 Amo Groningen B.V. Systems and methods for improving vision from an intraocular lens in an incorrect position and using refractive index writing
US11564839B2 (en) 2019-04-05 2023-01-31 Amo Groningen B.V. Systems and methods for vergence matching of an intraocular lens with refractive index writing

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3240355C1 (en) * 1982-11-02 1983-11-17 Heraeus Quarzschmelze Gmbh, 6450 Hanau Process for the production of an elongated glass body with an inhomogeneous refractive index distribution
DE3739974A1 (en) * 1987-11-25 1989-06-08 Rodenstock Optik G PROGRESSIVE GLASS GLASS
FR2649397B1 (en) * 1989-07-07 1992-01-03 Essilor Int PROCESS AND DEVICE FOR OBTAINING A GRADIENT INDEX POLYMER
DE19526928A1 (en) * 1995-07-24 1997-01-30 Guenter Graefe Optical gradient elements made from glass or plastic by spin casting - in process separating materials of differing molecular weight to produce a refractive index gradient along any required axis to make lightweight lenses or prisms for optical systems

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7524059B2 (en) 1999-07-02 2009-04-28 E-Vision, Llc System, apparatus and method for correcting vision with an adaptive optic
US7503651B2 (en) 2001-10-25 2009-03-17 Ophthonix, Inc. Eyeglass manufacturing method using variable index layer
US7588333B2 (en) 2001-10-25 2009-09-15 Ophthonix, Inc. Improving vision in macular degeneration patients

Also Published As

Publication number Publication date
AU9439998A (en) 1999-03-29
ITMI972047A1 (en) 1999-03-09
WO1999013361A1 (en) 1999-03-18

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