CA2436336A1 - Progressive multifocal ophthalmic lens with fast power variation - Google Patents

Progressive multifocal ophthalmic lens with fast power variation Download PDF

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Publication number
CA2436336A1
CA2436336A1 CA002436336A CA2436336A CA2436336A1 CA 2436336 A1 CA2436336 A1 CA 2436336A1 CA 002436336 A CA002436336 A CA 002436336A CA 2436336 A CA2436336 A CA 2436336A CA 2436336 A1 CA2436336 A1 CA 2436336A1
Authority
CA
Canada
Prior art keywords
lens
vision region
progression
power addition
control point
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
CA002436336A
Other languages
French (fr)
Other versions
CA2436336C (en
Inventor
Francoise Ahsbahs
Pierre Devie
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.)
EssilorLuxottica SA
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8859539&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2436336(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of CA2436336A1 publication Critical patent/CA2436336A1/en
Application granted granted Critical
Publication of CA2436336C publication Critical patent/CA2436336C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
    • G02C7/061—Spectacle lenses with progressively varying focal power
    • G02C7/063—Shape of the progressive surface
    • 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

Abstract

The invention relates to a progressive multifocal ophthalmic lens having a far vision region, an intermediate vision region and a near vision region, a main meridian of progression passing through said three regions, and a power addition equal to a difference in mean sphere between a near vision region control point and a far vision region control point. The lens has a progression length less than 12 mm, defined as the vertical distance between a mounting center and a point on the meridian where mean sphere is greater than mean sphere at the far vision control point by 85% of the power addition value. To ensure excellent optical performance of the lens despite this short length of progression, the ratio between the product of cylinder times the norm of sphere gradient, and the square of power addition is less than 0.08 mm-1 at every point within a 40 mm diameter disc centered on the center of the lens.
Additionally, cylinder within that part of the disc situated above the mounting center is less than 0.5 times power addition.
These features ensure optical performances of the lens, despite the low value of the progression length.
CA002436336A 2001-02-02 2002-02-01 Progressive multifocal ophthalmic lens with fast power variation Expired - Lifetime CA2436336C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0101410A FR2820515B1 (en) 2001-02-02 2001-02-02 PROGRESSIVE MULTIFOCAL OPHTHALMIC LENS WITH FAST POWER VARIATION
FR01/01410 2001-02-02
PCT/FR2002/000397 WO2002063376A1 (en) 2001-02-02 2002-02-01 Progressive multifocal ophthalmic lens with fast power variation

Publications (2)

Publication Number Publication Date
CA2436336A1 true CA2436336A1 (en) 2002-08-15
CA2436336C CA2436336C (en) 2009-10-06

Family

ID=8859539

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002436336A Expired - Lifetime CA2436336C (en) 2001-02-02 2002-02-01 Progressive multifocal ophthalmic lens with fast power variation

Country Status (11)

Country Link
US (1) US6595638B2 (en)
EP (1) EP1327175B1 (en)
JP (1) JP4226903B2 (en)
AT (1) ATE329286T1 (en)
AU (1) AU2002234718B8 (en)
BR (1) BR0204015B1 (en)
CA (1) CA2436336C (en)
DE (1) DE60212058T2 (en)
ES (1) ES2263766T3 (en)
FR (1) FR2820515B1 (en)
WO (1) WO2002063376A1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2820516B1 (en) * 2001-02-02 2003-05-16 Essilor Int PROGRESSIVE MULTIFOCAL OPHTHALMIC LENS WITH FAST POWER VARIATION
DE10133617B4 (en) * 2001-07-13 2008-01-03 Rodenstock Gmbh Progressive lens with real short progression
EP1376202B1 (en) * 2002-06-17 2014-08-13 ESSILOR INTERNATIONAL (Compagnie Générale d'Optique) Surface model of an ophtalmic lens
US7229173B2 (en) * 2004-08-25 2007-06-12 Essilor International (Compagnie Generale D'optique) S.A. Short corridor progressive addition lenses with reduced unwanted astigmatism
FR2884325B1 (en) * 2005-04-08 2007-06-01 Essilor Int OPHTHALMIC LENS
FR2888344B1 (en) * 2005-07-11 2007-09-14 Essilor Int OPHTHALMIC LENS
FR2893151B1 (en) 2005-11-08 2008-02-08 Essilor Int OPHTHALMIC LENS.
FR2894038B1 (en) * 2005-11-29 2008-03-07 Essilor Int OPHTHALMIC LENS.
FR2895092B1 (en) 2005-12-16 2008-02-29 Essilor Int METHOD FOR DETERMINING AN OPHTHALMIC LENS
JP2010513985A (en) * 2006-12-22 2010-04-30 エシロール アンテルナシオナル （コンパニー ジェネラレ ドプテイク） Improved single vision glasses
FR2924825B1 (en) * 2007-12-11 2010-08-20 Essilor Int PROGRESSIVE OPHTHALMIC LENS.
WO2011085936A1 (en) 2010-01-18 2011-07-21 Essilor International (Compagnie Generale D'optique) Process for designing an ophthalmic progressive eyeglass
FR2956222B1 (en) * 2010-02-09 2012-07-27 Essilor Int PROGRESSIVE MULTIFOCAL OPHTHALMIC LENS
US20150293377A1 (en) 2012-10-26 2015-10-15 Essilor International (Compagnie Generale D'optique) Method for providing an optical lens
US11156854B2 (en) * 2019-08-02 2021-10-26 Horizons Optical, S.L.U. Progressive ophthalmic lens

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2683643B1 (en) 1991-11-12 1994-01-14 Essilor Internal Cie Gle Optique PROGRESSIVE MULTIFOCAL OPHTHALMIC LENS.
FR2683642B1 (en) * 1991-11-12 1994-01-14 Essilor Internal Cie Gle Optique PROGRESSIVE MULTIFOCAL OPHTHALMIC LENS.
FR2699294B1 (en) 1992-12-11 1995-02-10 Essilor Int Progressive multifocal ophthalmic lens.
FR2733328B1 (en) * 1995-04-21 1997-06-13 Essilor Int PROGRESSIVE MULTIFOCAL OPHTHALMIC LENS
FR2753805B1 (en) 1996-09-20 1998-11-13 Essilor Int SET OF PROGRESSIVE MULTIFOCAL OPHTHALMIC LENSES
FR2769997B1 (en) * 1997-10-16 1999-12-31 Essilor Int MULTIFOCAL OPHTHALMIC LENS
FR2788861B1 (en) * 1999-01-22 2001-03-30 Essilor Int PROGRESSIVE MULTIFOCAL OPHTHALMIC LENS

Also Published As

Publication number Publication date
DE60212058D1 (en) 2006-07-20
BR0204015B1 (en) 2013-05-07
AU2002234718B2 (en) 2005-08-11
BR0204015A (en) 2002-12-31
FR2820515B1 (en) 2003-05-16
US6595638B2 (en) 2003-07-22
ATE329286T1 (en) 2006-06-15
JP2004519006A (en) 2004-06-24
US20020180928A1 (en) 2002-12-05
EP1327175B1 (en) 2006-06-07
JP4226903B2 (en) 2009-02-18
DE60212058T2 (en) 2007-01-04
AU2002234718B8 (en) 2005-12-08
ES2263766T3 (en) 2006-12-16
WO2002063376A1 (en) 2002-08-15
FR2820515A1 (en) 2002-08-09
CA2436336C (en) 2009-10-06
EP1327175A1 (en) 2003-07-16

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Effective date: 20220201