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GB9301614D0 - Multifocal contact lens - Google Patents

Multifocal contact lens

Info

Publication number
GB9301614D0
GB9301614D0GB939301614AGB9301614AGB9301614D0GB 9301614 D0GB9301614 D0GB 9301614D0GB 939301614 AGB939301614 AGB 939301614AGB 9301614 AGB9301614 AGB 9301614AGB 9301614 D0GB9301614 D0GB 9301614D0
Authority
GB
United Kingdom
Prior art keywords
lens
light
region
contact lens
multifocal contact
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.)
Pending
Application number
GB939301614A
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.)
Pilkington Diffractive Lenses Ltd
Original Assignee
Pilkington Diffractive Lenses 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 Pilkington Diffractive Lenses LtdfiledCriticalPilkington Diffractive Lenses Ltd
Priority to GB939301614ApriorityCriticalpatent/GB9301614D0/en
Publication of GB9301614D0publicationCriticalpatent/GB9301614D0/en
Priority to PCT/US1994/000918prioritypatent/WO1994017435A1/en
Priority to EP94907325Aprioritypatent/EP0681711A1/en
Priority to AU60959/94Aprioritypatent/AU6095994A/en
Priority to US08/495,463prioritypatent/US5748282A/en
Priority to CA002150478Aprioritypatent/CA2150478A1/en
Priority to JP6517298Aprioritypatent/JPH08507158A/en
Pendinglegal-statusCriticalCurrent

Links

Classifications

Landscapes

Abstract

A multifocal contact lens has diffractive power arising from a series of concentric zones each providing an asymmetric retardation of light across the zone width to direct light predominantly into a required order and sign of diffraction. At least some of the concentric zones are shaped so that the step height varies so that it is different in one region (A) of the lens from that in another region (B), whereby the intensity of light associated with an image observed by diffraction at one order in that region (A) of the lens is greater than the light intensity associated with the same image when observed at the same order through another region (B) of the lens.
GB939301614A1993-01-271993-01-27Multifocal contact lensPendingGB9301614D0 (en)

Priority Applications (7)

Application NumberPriority DateFiling DateTitle
GB939301614AGB9301614D0 (en)1993-01-271993-01-27Multifocal contact lens
PCT/US1994/000918WO1994017435A1 (en)1993-01-271994-01-25Multifocal contact lens
EP94907325AEP0681711A1 (en)1993-01-271994-01-25Multifocal contact lens
AU60959/94AAU6095994A (en)1993-01-271994-01-25Multifocal contact lens
US08/495,463US5748282A (en)1993-01-271994-01-25Multifocal contact lens
CA002150478ACA2150478A1 (en)1993-01-271994-01-25Multifocal contact lens
JP6517298AJPH08507158A (en)1993-01-271994-01-25 Multifocal contact lens

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
GB939301614AGB9301614D0 (en)1993-01-271993-01-27Multifocal contact lens

Publications (1)

Publication NumberPublication Date
GB9301614D0true GB9301614D0 (en)1993-03-17

Family

ID=10729415

Family Applications (1)

Application NumberTitlePriority DateFiling Date
GB939301614APendingGB9301614D0 (en)1993-01-271993-01-27Multifocal contact lens

Country Status (6)

CountryLink
EP (1)EP0681711A1 (en)
JP (1)JPH08507158A (en)
AU (1)AU6095994A (en)
CA (1)CA2150478A1 (en)
GB (1)GB9301614D0 (en)
WO (1)WO1994017435A1 (en)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
US5699142A (en)*1994-09-011997-12-16Alcon Laboratories, Inc.Diffractive multifocal ophthalmic lens
DE19726888A1 (en)*1997-06-251999-01-07Woehlk Contact Linsen Gmbh Fitting method for a contact lens and measuring lens for carrying out the method
JP3559710B2 (en)1998-05-252004-09-02キヤノン株式会社 Diffractive optical element and scanning optical device using the same
US6951391B2 (en)*2003-06-162005-10-04Apollo Optical Systems LlcBifocal multiorder diffractive lenses for vision correction
US20070171362A1 (en)*2004-12-012007-07-26Simpson Michael JTruncated diffractive intraocular lenses
US8317321B2 (en)*2007-07-032012-11-27Pixeloptics, Inc.Multifocal lens with a diffractive optical power region
AU2010213535B2 (en)*2009-02-122015-07-09The Arizona Board Of Regents On Behalf Of The University Of ArizonaDiffractive trifocal lens
CN108013952A (en)2012-08-312018-05-11Amo格罗宁根私人有限公司Polycyclic crystalline lens, system and method for extended focal depth
EP3130314A1 (en)2015-08-122017-02-15PhysIOL SATrifocal intraocular lens with extended range of vision and correction of longitudinal chromatic aberration
US11497599B2 (en)2017-03-172022-11-15Amo Groningen B.V.Diffractive intraocular lenses for extended range of vision
US11523897B2 (en)2017-06-232022-12-13Amo Groningen B.V.Intraocular lenses for presbyopia treatment
US11262598B2 (en)2017-06-282022-03-01Amo Groningen, B.V.Diffractive lenses and related intraocular lenses for presbyopia treatment
EP4480450A3 (en)2017-06-282025-04-02Amo Groningen B.V.Extended range and related intraocular lenses for presbyopia treatment
US11327210B2 (en)2017-06-302022-05-10Amo Groningen B.V.Non-repeating echelettes and related intraocular lenses for presbyopia treatment
WO2020115104A1 (en)2018-12-062020-06-11Amo Groningen B.V.Diffractive lenses for presbyopia treatment
US11678975B2 (en)2019-04-052023-06-20Amo Groningen B.V.Systems and methods for treating ocular disease with an intraocular lens and refractive index writing
US11529230B2 (en)2019-04-052022-12-20Amo Groningen B.V.Systems and methods for correcting power of an intraocular lens using refractive index writing
US11583389B2 (en)2019-04-052023-02-21Amo Groningen B.V.Systems and methods for correcting photic phenomenon from an intraocular lens and using refractive index writing
US11944574B2 (en)2019-04-052024-04-02Amo Groningen B.V.Systems and methods for multiple layer intraocular lens and using refractive index writing
US11564839B2 (en)2019-04-052023-01-31Amo Groningen B.V.Systems and methods for vergence matching of an intraocular lens with refractive index writing
US12357509B2 (en)2019-04-052025-07-15Amo Groningen B.V.Systems and methods for improving vision from an intraocular lens in an incorrect position and using refractive index writing
US11583388B2 (en)2019-04-052023-02-21Amo Groningen B.V.Systems and methods for spectacle independence using refractive index writing with an intraocular lens
US12377622B2 (en)2019-04-052025-08-05Amo Groningen B.V.Systems and methods for vergence matching with an optical profile and using refractive index writing
AU2020416055A1 (en)2019-12-302022-08-25Amo Groningen B.V.Lenses having diffractive profiles with irregular width for vision treatment
CN120507900A (en)*2020-02-142025-08-19恩视控股有限公司 Contact lens for myopia and method for providing directional cues to myopia to reduce myopia progression
KR102549865B1 (en)*2021-04-022023-06-30한양대학교 산학협력단Multi-focusing lenses having mutiple wave plate
KR102551740B1 (en)*2021-04-022023-07-05한양대학교 산학협력단Extended depth of focus lenses having multiple wave plate

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
DE3377535D1 (en)*1982-10-271988-09-01Pilkington PlcBifocal contact lens comprising a plurality of concentric zones
FR2631713B1 (en)*1988-05-191990-08-31Essilor Int DIFFRACTIVE LENS WITH MIXED PROFILE
US4909818A (en)*1988-11-161990-03-20Jones William FSystem and process for making diffractive contact
FR2642855B1 (en)*1989-02-061991-05-17Essilor Int OPTICAL LENS FOR THE CORRECTION OF ASTIGMATISM
US5089023A (en)*1990-03-221992-02-18Massachusetts Institute Of TechnologyDiffractive/refractive lens implant
US5096285A (en)*1990-05-141992-03-17Iolab CorporationMultifocal multizone diffractive ophthalmic lenses

Also Published As

Publication numberPublication date
EP0681711A4 (en)1995-07-26
EP0681711A1 (en)1995-11-15
JPH08507158A (en)1996-07-30
WO1994017435A1 (en)1994-08-04
CA2150478A1 (en)1994-08-04
AU6095994A (en)1994-08-15

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