CA2161560A1 - Progressive Multifocal Ophthalmic Lens - Google Patents

Progressive Multifocal Ophthalmic Lens

Info

Publication number
CA2161560A1
CA2161560A1 CA2161560A CA2161560A CA2161560A1 CA 2161560 A1 CA2161560 A1 CA 2161560A1 CA 2161560 A CA2161560 A CA 2161560A CA 2161560 A CA2161560 A CA 2161560A CA 2161560 A1 CA2161560 A1 CA 2161560A1
Authority
CA
Canada
Prior art keywords
control point
vision portion
ophthalmic lens
progressive multifocal
multifocal ophthalmic
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
CA2161560A
Other languages
French (fr)
Other versions
CA2161560C (en
Inventor
Francoise Ahsbahs
Claude Pedrono
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
Essilor International Compagnie Generale dOptique SA
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=9468349&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2161560(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Essilor International Compagnie Generale dOptique SA filed Critical Essilor International Compagnie Generale dOptique SA
Publication of CA2161560A1 publication Critical patent/CA2161560A1/en
Application granted granted Critical
Publication of CA2161560C publication Critical patent/CA2161560C/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
    • 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
    • G02C7/066—Shape, location or size of the viewing zones

Abstract

A progressive multifocal ophthalmic lens is provided comprising an aspherical surface having a mean sphere and a cylinder at every point.
The aspherical surface comprises a distance vision portion, with a control point for distance vision, a near vision portion with a control point for near vision, and an intermediate vision portion between the near vision portion and the distance vision portion.
A power addition value A is defined as a variation in mean sphere between the control point for distance vision and the control point for near vision portion.
A base B is defined as a value of mean sphere at the control point for distance vision.
A width of the near vision portion varies not only as a function of the power addition value A, but also as a function of the value B of the base.
The invention thereby ensures the presence of a substantially constant object field for all values of the power addition and of the base.
CA002161560A 1994-10-28 1995-10-27 Progressive multifocal ophthalmic lens Expired - Lifetime CA2161560C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9412978A FR2726374B1 (en) 1994-10-28 1994-10-28 PROGRESSIVE MULTIFOCAL OPHTHALMIC LENS
FR9412978 1994-10-28

Publications (2)

Publication Number Publication Date
CA2161560A1 true CA2161560A1 (en) 1996-04-29
CA2161560C CA2161560C (en) 2000-12-12

Family

ID=9468349

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002161560A Expired - Lifetime CA2161560C (en) 1994-10-28 1995-10-27 Progressive multifocal ophthalmic lens

Country Status (11)

Country Link
US (1) US5708493A (en)
JP (1) JP3080295B2 (en)
AU (1) AU697240B2 (en)
BR (1) BR9504883A (en)
CA (1) CA2161560C (en)
DE (1) DE19538470C2 (en)
ES (1) ES2112182B1 (en)
FR (1) FR2726374B1 (en)
GB (1) GB2294553B (en)
IE (1) IE81058B1 (en)
IT (1) IT1276579B1 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU685686B2 (en) * 1994-10-21 1998-01-22 Carl Zeiss Vision Australia Holdings Ltd Enhanced ophthalmic lens
JP3196880B2 (en) * 1995-09-22 2001-08-06 ホーヤ株式会社 Progressive multifocal lens
JPH09251143A (en) * 1996-03-14 1997-09-22 Nikon Corp Progressive focus lens
ATE367597T1 (en) * 1996-04-04 2007-08-15 Carl Zeiss Vision Au Holding PROGRESSIVE LENSES AND METHODS OF DESIGN AND USE THEREOF
FR2753805B1 (en) * 1996-09-20 1998-11-13 Essilor Int SET OF PROGRESSIVE MULTIFOCAL OPHTHALMIC LENSES
JP3787227B2 (en) * 1997-10-23 2006-06-21 東海光学株式会社 Progressive focus lens for spectacles and spectacles using the same
US6343861B1 (en) † 1998-06-12 2002-02-05 Sola International Holdings, Ltd. Myopia lens
FR2788861B1 (en) * 1999-01-22 2001-03-30 Essilor Int PROGRESSIVE MULTIFOCAL OPHTHALMIC LENS
AUPQ065599A0 (en) 1999-05-31 1999-06-24 Sola International Holdings Ltd Progressive lens
WO2001025837A1 (en) 1999-10-01 2001-04-12 Sola International Holdings Ltd Progressive lens
FR2809193B1 (en) * 2000-05-16 2002-08-09 Essilor Int PROGRESSIVE MULTIFOCAL OPHTHALMIC LENS WITH FAST POWER VARIATION
KR20020060445A (en) * 2001-01-11 2002-07-18 문재오 Molding mold and glass mold for manufacturing multi focus eyeglasses lens formed using the same
ES2200709B1 (en) * 2002-08-23 2005-05-01 Reyes Lopez Hernandez PROGRESSIVE LENS
US7572385B2 (en) * 2003-11-17 2009-08-11 Micron Technology, Inc. Method of forming micro-lenses
FR2884325B1 (en) * 2005-04-08 2007-06-01 Essilor Int OPHTHALMIC LENS
FR2916864B1 (en) * 2007-05-31 2010-01-08 Essilor Int MYOPIA CORRECTION PROGRESSIVE OPHTHALMIC GLASS AND METHOD OF MAKING SUCH A GLASS
US9618774B2 (en) * 2014-02-10 2017-04-11 Shamir Optical Industry Ltd. Quasi progressive lenses for eyewear
US10048512B2 (en) * 2016-10-08 2018-08-14 eyeBrain, Medical, Inc. Low-convergence spectacles
WO2019141386A1 (en) * 2018-01-19 2019-07-25 Carl Zeiss Vision International Gmbh Progressive spectacle lens with a variable refractive index, and method for designing and producing same
ES2946964T3 (en) 2017-01-20 2023-07-28 Zeiss Carl Vision Int Gmbh Lenses for varifocal spectacles with variable refractive index and procedure for their design and manufacture

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5958415A (en) * 1982-09-29 1984-04-04 Seiko Epson Corp Progressive multifocal lens
JP2576054B2 (en) * 1988-02-29 1997-01-29 株式会社ニコン Progressive multifocal lens
US5000559A (en) * 1988-02-29 1991-03-19 Nikon Corporation Ophthalmic lenses having progressively variable refracting power
DE4012609A1 (en) * 1990-04-19 1991-10-24 Zeiss Carl Fa REFLECTIVE SURFACE FOR A REFLECTIVE PRESCRIPTION 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.
FR2704327B1 (en) * 1993-04-23 1995-06-23 Essilor Int Pair of progressive multifocal ophthalmic lenses.
EP0702257B1 (en) * 1994-08-26 2008-06-25 Tokai Kogaku Kabushiki Kaisha Progressive power presbyopia-correcting ophthalmic lenses
WO1996011421A1 (en) * 1994-10-06 1996-04-18 Seiko Epson Corporation Gradual multifocus lens and method of manufacturing the same

Also Published As

Publication number Publication date
DE19538470A1 (en) 1996-05-02
ITRM950702A0 (en) 1995-10-25
IE950799A1 (en) 1996-05-01
IE81058B1 (en) 1999-12-29
DE19538470C2 (en) 2001-09-20
AU697240B2 (en) 1998-10-01
GB2294553A (en) 1996-05-01
GB2294553B (en) 1998-04-29
US5708493A (en) 1998-01-13
GB9522051D0 (en) 1996-01-03
FR2726374B1 (en) 1996-12-27
FR2726374A1 (en) 1996-05-03
CA2161560C (en) 2000-12-12
ITRM950702A1 (en) 1997-04-25
ES2112182A1 (en) 1998-03-16
JPH08211339A (en) 1996-08-20
JP3080295B2 (en) 2000-08-21
BR9504883A (en) 1997-09-02
IT1276579B1 (en) 1997-11-03
AU3446395A (en) 1996-05-09
ES2112182B1 (en) 1998-11-16

Similar Documents

Publication Publication Date Title
CA2161560A1 (en) Progressive Multifocal Ophthalmic Lens
CA2110926A1 (en) Progressive Multifocal Ophtalmic Lens
CA2250571A1 (en) Multifocal ophthalmic lens
CA2339776A1 (en) Multifocal aspheric lens
GB9406312D0 (en) Progressive multifocal ophthalmic lens pair
AU2002300702A1 (en) Extended wear ophthalmic lens
CA2421001A1 (en) Ophthalmic lenses useful in correcting astigmatism and presbyopia
BR0002033A (en) Progressive multifocal ophthalmic lens
HUP9601156A2 (en) An aspheric toric lens
AU7672694A (en) Aspheric multifocal contact lens
CA2169771A1 (en) Method and Optical Means for Improving or Modifying Color Vision and Method for Making Said Optical Means
CA2265705A1 (en) Set of progressive multifocal ophthalmic lenses
AU5206796A (en) Aspheric toric lens designs
CA2048013A1 (en) Multifocal diffractive ophthalmic lenses
AU688023C (en) Set of progressive spectacle lenses
EP0702257A3 (en) Progressive power presbyopia-correcting ophthalmic lenses
USD392665S (en) Sunglass
AU6095994A (en) Multifocal contact lens
AU6026798A (en) Preformed ophthalmic lens base block with textured surface
FR2809193B1 (en) PROGRESSIVE MULTIFOCAL OPHTHALMIC LENS WITH FAST POWER VARIATION
AU5194996A (en) Multifocal ophthalmic lens
AU5171498A (en) Ophthalmic no-line progressive addition lenses
AU9439998A (en) Progressive, multifocal ophthalmic lens having constant geometry and variable refraction index
WO2003054616A3 (en) Multifocal ophthalmic lenses
FR2820516B1 (en) PROGRESSIVE MULTIFOCAL OPHTHALMIC LENS WITH FAST POWER VARIATION

Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20151027