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GB9301614D0 - Multifocal contact lens - Google Patents

Multifocal contact lens

Info

Publication number
GB9301614D0
GB9301614D0 GB939301614A GB9301614A GB9301614D0 GB 9301614 D0 GB9301614 D0 GB 9301614D0 GB 939301614 A GB939301614 A GB 939301614A GB 9301614 A GB9301614 A GB 9301614A GB 9301614 D0 GB9301614 D0 GB 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 Ltd filed Critical Pilkington Diffractive Lenses Ltd
Priority to GB939301614A priority Critical patent/GB9301614D0/en
Publication of GB9301614D0 publication Critical patent/GB9301614D0/en
Priority to CA002150478A priority patent/CA2150478A1/en
Priority to EP94907325A priority patent/EP0681711A1/en
Priority to JP6517298A priority patent/JPH08507158A/en
Priority to PCT/US1994/000918 priority patent/WO1994017435A1/en
Priority to US08/495,463 priority patent/US5748282A/en
Priority to AU60959/94A priority patent/AU6095994A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1876—Diffractive Fresnel lenses; Zone plates; Kinoforms
    • G02B5/189—Structurally combined with optical elements not having diffractive power
    • G02B5/1895—Structurally combined with optical elements not having diffractive power such optical elements having dioptric power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
    • B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
    • B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
    • B23K26/066—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms by using masks
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1876—Diffractive Fresnel lenses; Zone plates; Kinoforms
    • 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
    • G02C7/041—Contact lenses for the eyes bifocal; multifocal
    • 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
    • G02C7/041—Contact lenses for the eyes bifocal; multifocal
    • G02C7/043—Translating type
    • 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
    • G02C7/041—Contact lenses for the eyes bifocal; multifocal
    • G02C7/044—Annular configuration, e.g. pupil tuned
    • 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
    • G02C2202/20—Diffractive and Fresnel lenses or lens portions

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • General Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Eyeglasses (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)

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.
GB939301614A 1993-01-27 1993-01-27 Multifocal contact lens Pending GB9301614D0 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB939301614A GB9301614D0 (en) 1993-01-27 1993-01-27 Multifocal contact lens
CA002150478A CA2150478A1 (en) 1993-01-27 1994-01-25 Multifocal contact lens
EP94907325A EP0681711A1 (en) 1993-01-27 1994-01-25 Multifocal contact lens
JP6517298A JPH08507158A (en) 1993-01-27 1994-01-25 Multifocal contact lens
PCT/US1994/000918 WO1994017435A1 (en) 1993-01-27 1994-01-25 Multifocal contact lens
US08/495,463 US5748282A (en) 1993-01-27 1994-01-25 Multifocal contact lens
AU60959/94A AU6095994A (en) 1993-01-27 1994-01-25 Multifocal contact lens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB939301614A GB9301614D0 (en) 1993-01-27 1993-01-27 Multifocal contact lens

Publications (1)

Publication Number Publication Date
GB9301614D0 true GB9301614D0 (en) 1993-03-17

Family

ID=10729415

Family Applications (1)

Application Number Title Priority Date Filing Date
GB939301614A Pending GB9301614D0 (en) 1993-01-27 1993-01-27 Multifocal contact lens

Country Status (6)

Country Link
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 number Priority date Publication date Assignee Title
US5699142A (en) * 1994-09-01 1997-12-16 Alcon Laboratories, Inc. Diffractive multifocal ophthalmic lens
DE19726888A1 (en) * 1997-06-25 1999-01-07 Woehlk Contact Linsen Gmbh Fitting method for a contact lens and measuring lens for carrying out the method
JP3559710B2 (en) * 1998-05-25 2004-09-02 キヤノン株式会社 Diffractive optical element and scanning optical device using the same
US6951391B2 (en) * 2003-06-16 2005-10-04 Apollo Optical Systems Llc Bifocal multiorder diffractive lenses for vision correction
US20070171362A1 (en) * 2004-12-01 2007-07-26 Simpson Michael J Truncated diffractive intraocular lenses
US8317321B2 (en) 2007-07-03 2012-11-27 Pixeloptics, Inc. Multifocal lens with a diffractive optical power region
JP6042067B2 (en) 2009-02-12 2016-12-14 ザ アリゾナ ボード オブ リージェンツ オン ビハーフ オブ ザ ユニヴァーシティ オブ アリゾナ Diffractive trifocal lens
CN104755012B (en) 2012-08-31 2018-01-12 Amo格罗宁根私人有限公司 Polycyclic lenses, systems and methods for extended depth of focus
EP3130314A1 (en) 2015-08-12 2017-02-15 PhysIOL SA Trifocal intraocular lens with extended range of vision and correction of longitudinal chromatic aberration
AU2018235011A1 (en) 2017-03-17 2019-10-24 Amo Groningen B.V. Diffractive intraocular lenses for extended range of vision
US11523897B2 (en) 2017-06-23 2022-12-13 Amo Groningen B.V. Intraocular lenses for presbyopia treatment
EP4487816A3 (en) 2017-06-28 2025-03-12 Amo Groningen B.V. Diffractive lenses and related intraocular lenses for presbyopia treatment
EP4480450A3 (en) 2017-06-28 2025-04-02 Amo Groningen B.V. Extended range and related intraocular lenses for presbyopia treatment
US11327210B2 (en) 2017-06-30 2022-05-10 Amo Groningen B.V. Non-repeating echelettes and related intraocular lenses for presbyopia treatment
EP3891554A1 (en) 2018-12-06 2021-10-13 AMO Groningen B.V. Diffractive lenses for presbyopia treatment
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
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
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
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
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
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
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
CA3166308A1 (en) 2019-12-30 2021-07-08 Amo Groningen B.V. Lenses having diffractive profiles with irregular width for vision treatment
CN120507900A (en) * 2020-02-14 2025-08-19 恩视控股有限公司 Contact lens for myopia and method for providing direction cues to myopia to reduce myopia progression
KR102551740B1 (en) * 2021-04-02 2023-07-05 한양대학교 산학협력단 Extended depth of focus lenses having multiple wave plate
KR102549865B1 (en) * 2021-04-02 2023-06-30 한양대학교 산학협력단 Multi-focusing lenses having mutiple wave plate

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0109753B1 (en) * 1982-10-27 1988-07-27 Pilkington Plc Bifocal contact lens comprising a plurality of concentric zones
FR2631713B1 (en) * 1988-05-19 1990-08-31 Essilor Int DIFFRACTIVE LENS WITH MIXED PROFILE
US4909818A (en) * 1988-11-16 1990-03-20 Jones William F System and process for making diffractive contact
FR2642855B1 (en) * 1989-02-06 1991-05-17 Essilor Int OPTICAL LENS FOR THE CORRECTION OF ASTIGMATISM
US5089023A (en) * 1990-03-22 1992-02-18 Massachusetts Institute Of Technology Diffractive/refractive lens implant
US5096285A (en) * 1990-05-14 1992-03-17 Iolab Corporation Multifocal multizone diffractive ophthalmic lenses

Also Published As

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

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