IN2014MN02113A - - Google Patents

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Publication number
IN2014MN02113A
IN2014MN02113A IN2113MUN2014A IN2014MN02113A IN 2014MN02113 A IN2014MN02113 A IN 2014MN02113A IN 2113MUN2014 A IN2113MUN2014 A IN 2113MUN2014A IN 2014MN02113 A IN2014MN02113 A IN 2014MN02113A
Authority
IN
India
Prior art keywords
lens
gaze direction
pair
defining
temporal
Prior art date
Application number
Inventor
Björn Drobe
Hwei Kien Paulyn Ng
Aude Contet
Original Assignee
Essilor Int
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 Essilor Int filed Critical Essilor Int
Publication of IN2014MN02113A publication Critical patent/IN2014MN02113A/en

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
    • G02C7/024—Methods of designing ophthalmic lenses
    • G02C7/027—Methods of designing ophthalmic lenses considering wearer's parameters
    • 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
    • G02C7/022—Ophthalmic lenses having special refractive features achieved by special materials or material structures
    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Eyeglasses (AREA)
  • Eye Examination Apparatus (AREA)

Abstract

The process comprises: determining prescribed far vision mean power and addition for each lens of the pair; determining a reading direction for the wearer; defining a temporal side and a nasal side on each lens of the pair; defining on each lens being worn and for each gaze direction a refractive power and a module of resulting astigmatism each gaze direction corresponding to a lowering angle and to an azimuth angle; defining a proximate vision gaze direction for each lens of the pair; defining for each lens of the pair a temporal half width field of refractive power as the angular distance at constant lowering angle between the proximate vision gaze direction and a gaze direction on the temporal side of the lens where the refractive power reaches the value of the prescribed far vision mean power plus three quarters of the prescribed addition; defining for each lens of the pair a nasal half width field of refractive power as the angular distance at constant lowering angle between the proximate vision gaze direction and a gaze direction on the nasal side of the lens where the refractive power reaches the value of the prescribed far vision mean power plus three quarters of the prescribed addition; defining for each lens of the pair a temporal half width field of module of resulting astigmatism as the angular distance at constant lowering angle between the proximate vision gaze direction and a gaze direction on the temporal side of the lens where the module of resulting astigmatism reaches the value of one quarter of the prescribed addition; and defining for each lens of the pair a nasal half width field of module of resulting astigmatism as the angular distance at constant lowering angle between the proximate vision gaze direction and a gaze direction on the nasal side of the lens where the module of resulting astigmatism reaches the value of one quarter of the prescribed addition. The ratio of the difference over the sum of temporal and nasal half width fields of refractive power and/or the ratio of the difference over the sum of temporal and nasal half width fields of module of resulting astigmatism are determined for each lens of the pair based on the reading direction determined for the wearer.
IN2113MUN2014 2012-06-29 2013-06-28 IN2014MN02113A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP12305773 2012-06-29
PCT/EP2013/063603 WO2014001491A1 (en) 2012-06-29 2013-06-28 A process for determining a pair of progressive ophthalmic lenses

Publications (1)

Publication Number Publication Date
IN2014MN02113A true IN2014MN02113A (en) 2015-09-11

Family

ID=48700588

Family Applications (1)

Application Number Title Priority Date Filing Date
IN2113MUN2014 IN2014MN02113A (en) 2012-06-29 2013-06-28

Country Status (8)

Country Link
US (1) US9411170B2 (en)
EP (1) EP2867719B1 (en)
JP (1) JP2015522845A (en)
CN (1) CN104303094B (en)
EA (1) EA026853B9 (en)
IL (1) IL235245B (en)
IN (1) IN2014MN02113A (en)
WO (1) WO2014001491A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014128034A1 (en) * 2013-02-20 2014-08-28 Essilor International (Compagnie Generale D'optique) Pair of progressive ophthalmic lenses
BR112015019008A8 (en) * 2013-02-20 2018-08-14 Essilor Int PAIR OF PROGRESSIVE OPHTHALMIC LENSES
JP6785857B2 (en) * 2015-08-03 2020-11-18 エシロール エンテルナショナル A refractive power determination device configured to determine the refractive power of an optical lens and a method for determining the refractive power of an optical lens.
EP3362846B1 (en) * 2015-10-15 2022-04-27 Essilor International An ophthalmic progressive addition lens for a presbyopic wearer; method for providing such a lens
CN108474961B (en) * 2015-10-15 2019-11-15 依视路国际公司 For the progressive multifocal ophthalmic lens of farsightedness and presbyopia wearer, for providing the method for such eyeglass

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3381314B2 (en) * 1993-06-29 2003-02-24 株式会社ニコン Progressive focus lens
FR2753805B1 (en) 1996-09-20 1998-11-13 Essilor Int SET OF PROGRESSIVE MULTIFOCAL OPHTHALMIC LENSES
DE102004059448A1 (en) * 2004-11-19 2006-06-01 Rodenstock Gmbh Method and apparatus for manufacturing a spectacle lens; System and computer program product for manufacturing a spectacle lens
FR2906621B1 (en) * 2006-09-28 2008-11-28 Essilor Int METHOD FOR DETERMINING AN OPHTHALMIC LENS
US7828433B2 (en) * 2008-10-22 2010-11-09 Shamir Optical Industry Assymetrical progressive lens
JP5725646B2 (en) 2010-03-10 2015-05-27 ホーヤ レンズ マニュファクチャリング フィリピン インク Progressive power lens design method, progressive power lens design system, and progressive power lens manufacturing method

Also Published As

Publication number Publication date
EA201401246A1 (en) 2015-02-27
WO2014001491A1 (en) 2014-01-03
EP2867719B1 (en) 2019-11-27
IL235245B (en) 2018-11-29
EA026853B9 (en) 2017-06-30
US9411170B2 (en) 2016-08-09
CN104303094B (en) 2016-09-14
JP2015522845A (en) 2015-08-06
EP2867719A1 (en) 2015-05-06
EA026853B1 (en) 2017-05-31
CN104303094A (en) 2015-01-21
US20150109575A1 (en) 2015-04-23

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