CA2363121A1 - Pair of multifocal progressive spectacle lenses - Google Patents
Pair of multifocal progressive spectacle lenses Download PDFInfo
- Publication number
- CA2363121A1 CA2363121A1 CA002363121A CA2363121A CA2363121A1 CA 2363121 A1 CA2363121 A1 CA 2363121A1 CA 002363121 A CA002363121 A CA 002363121A CA 2363121 A CA2363121 A CA 2363121A CA 2363121 A1 CA2363121 A1 CA 2363121A1
- Authority
- CA
- Canada
- Prior art keywords
- point
- aspherical surface
- pair
- vision zone
- spectacle lenses
- 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
Links
- 230000000750 progressive effect Effects 0.000 title abstract 2
- 208000001491 myopia Diseases 0.000 abstract 1
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
- G02C7/024—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
- G02C7/06—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
- G02C7/065—Properties on the principal line
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)
Abstract
The invention relates to a pair of progressive ophthalmic spectacle lenses;
each lens has an aspherical surface with a far vision zone, an intermediate vision zone and a near vision zone, and good monocular and binocular foveal vision along the principal meridian. At each point of the aspherical surface there is a mean sphere which is proportional to the half sum of the maximum and minimum radii of curvature expressed in meters, and to the refractive index of the lens material. The invention suggests reducing, for a given direction of sight, the absolute value of the difference between a binocularity parameter for two points in the object space. The binocularity parameter is defined for a point in the object space as the relative difference .DELTA.S of the mean sphere for the points of the aspherical surface of the right and left lenses through which the wearer sees said point.
each lens has an aspherical surface with a far vision zone, an intermediate vision zone and a near vision zone, and good monocular and binocular foveal vision along the principal meridian. At each point of the aspherical surface there is a mean sphere which is proportional to the half sum of the maximum and minimum radii of curvature expressed in meters, and to the refractive index of the lens material. The invention suggests reducing, for a given direction of sight, the absolute value of the difference between a binocularity parameter for two points in the object space. The binocularity parameter is defined for a point in the object space as the relative difference .DELTA.S of the mean sphere for the points of the aspherical surface of the right and left lenses through which the wearer sees said point.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP1999/010313 WO2001046744A2 (en) | 1999-12-22 | 1999-12-22 | Pair of multifocal progressive spectacle lenses |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2363121A1 true CA2363121A1 (en) | 2001-06-28 |
| CA2363121C CA2363121C (en) | 2008-12-09 |
Family
ID=8167543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002363121A Expired - Fee Related CA2363121C (en) | 1999-12-22 | 1999-12-22 | Pair of multifocal progressive spectacle lenses |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JP4335488B2 (en) |
| CN (1) | CN1268964C (en) |
| AU (1) | AU772729B2 (en) |
| BR (1) | BR9917280B1 (en) |
| CA (1) | CA2363121C (en) |
| WO (1) | WO2001046744A2 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4033344B2 (en) * | 2001-04-26 | 2008-01-16 | Ｈｏｙａ株式会社 | Spectacle lens design method and spectacle lens |
| FR2874709B1 (en) | 2004-08-27 | 2006-11-24 | Essilor Int | METHOD FOR DETERMINING A PAIR OF PROGRESSIVE OPHTHALMIC LENSES |
| EP1906227B1 (en) | 2005-06-24 | 2016-08-10 | Hoya Corporation | Method of producing a group of double progressive spectacle lenses |
| DE102006030204A1 (en) | 2006-06-30 | 2008-01-03 | Rodenstock Gmbh | Pair of spectacle lenses in anisometropia |
| DE102007062929A1 (en) | 2007-12-28 | 2009-07-02 | Rodenstock Gmbh | Method for calculating and optimizing a pair of spectacle lenses taking into account binocular properties |
| JP2011203705A (en) * | 2010-03-01 | 2011-10-13 | Seiko Epson Corp | Spectacle lens and method for designing the same |
| CN102768414B (en) * | 2012-07-30 | 2013-09-25 | 上海理工大学 | Design method for novel multi-optical axis progressive multi-focal lens |
| CN109946849A (en) * | 2019-04-25 | 2019-06-28 | 齐备 | Optical frame glasses |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3016935C2 (en) * | 1980-05-02 | 1991-01-24 | Fa. Carl Zeiss, 7920 Heidenheim | Multifocal spectacle lens with partially sliding refractive power |
| 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. |
| JP3381314B2 (en) * | 1993-06-29 | 2003-02-24 | 株式会社ニコン | Progressive focus lens |
| JP3196877B2 (en) * | 1995-04-18 | 2001-08-06 | ホーヤ株式会社 | Progressive multifocal lens |
| FR2733328B1 (en) * | 1995-04-21 | 1997-06-13 | Essilor Int | PROGRESSIVE MULTIFOCAL OPHTHALMIC LENS |
| JP3196880B2 (en) * | 1995-09-22 | 2001-08-06 | ホーヤ株式会社 | Progressive multifocal lens |
-
1999
- 1999-12-22 CN CN99816305.8A patent/CN1268964C/en not_active Expired - Fee Related
- 1999-12-22 CA CA002363121A patent/CA2363121C/en not_active Expired - Fee Related
- 1999-12-22 JP JP2001547596A patent/JP4335488B2/en not_active Expired - Fee Related
- 1999-12-22 WO PCT/EP1999/010313 patent/WO2001046744A2/en active IP Right Grant
- 1999-12-22 BR BRPI9917280-1A patent/BR9917280B1/en not_active IP Right Cessation
- 1999-12-22 AU AU25387/00A patent/AU772729B2/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| AU772729B2 (en) | 2004-05-06 |
| CA2363121C (en) | 2008-12-09 |
| CN1346449A (en) | 2002-04-24 |
| BR9917280A (en) | 2001-12-26 |
| AU2538700A (en) | 2001-07-03 |
| CN1268964C (en) | 2006-08-09 |
| JP2003518275A (en) | 2003-06-03 |
| WO2001046744A3 (en) | 2001-11-08 |
| WO2001046744A2 (en) | 2001-06-28 |
| JP4335488B2 (en) | 2009-09-30 |
| BR9917280B1 (en) | 2012-09-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20161222 |