JPS5794714A - Progressive multifocus lens - Google Patents

Progressive multifocus lens

Info

Publication number
JPS5794714A
JPS5794714A JP17156980A JP17156980A JPS5794714A JP S5794714 A JPS5794714 A JP S5794714A JP 17156980 A JP17156980 A JP 17156980A JP 17156980 A JP17156980 A JP 17156980A JP S5794714 A JPS5794714 A JP S5794714A
Authority
JP
Japan
Prior art keywords
sight
short
main meridian
long
meridian curve
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
JP17156980A
Other languages
Japanese (ja)
Other versions
JPH0239766B2 (en
Inventor
Shunei Shinohara
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.)
Seiko Epson Corp
Suwa Seikosha KK
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
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 Seiko Epson Corp, Suwa Seikosha KK filed Critical Seiko Epson Corp
Priority to JP17156980A priority Critical patent/JPS5794714A/en
Priority to FR8122267A priority patent/FR2495789B1/en
Priority to GB8136441A priority patent/GB2090426B/en
Priority to DE3147952A priority patent/DE3147952C2/en
Priority to US06/327,288 priority patent/US4580883A/en
Publication of JPS5794714A publication Critical patent/JPS5794714A/en
Priority to SG531/86A priority patent/SG53186G/en
Priority to HK737/86A priority patent/HK73786A/en
Publication of JPH0239766B2 publication Critical patent/JPH0239766B2/ja
Granted 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
    • 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

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

PURPOSE:To suppress the occurrence of astigmatism and distortion aberration, by dividing the surface of a lens into a long-sight part, an intermediate part and a short-sight part by giving a degree of entry on a main meridian curve, and setting an angle made by a normal on the crossing line with a place being parallel to a place containing the main meridian curve. CONSTITUTION:Curves C1, C2 cross a main meridian curve M in a long-sight center A and a short-sight center B, and the refracted surface of a lens is divided into each area such as a long-sight part 51, an intermediate part 52 and a short-sight part 53. A section curve M1 by the surface being parallel to a place containing the main meridian curve M crosses the curves C1, C2 at points A1, A2, and varies an angle made by a normal of the refracted surface of the lens and the surface containing the main meridian curve M. That is to say, this angle is constant in the area of the long-sight part 51 and the short-sight part 53, and in the intermediate part area 52, it is varied by the same rule as a variation of curvature between the long-sight center A and the short-sight center B on the same main meridian curve M. In this way, astigmatism and distortion aberration are suppressed, and both static vision and dynamic vision are satisfied.
JP17156980A 1980-12-05 1980-12-05 Progressive multifocus lens Granted JPS5794714A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP17156980A JPS5794714A (en) 1980-12-05 1980-12-05 Progressive multifocus lens
FR8122267A FR2495789B1 (en) 1980-12-05 1981-11-27 PROGRESSIVE MULTIFOCAL LENS
GB8136441A GB2090426B (en) 1980-12-05 1981-12-03 Progressive power ophthalmic lenses
DE3147952A DE3147952C2 (en) 1980-12-05 1981-12-03 Multifocal lens
US06/327,288 US4580883A (en) 1980-12-05 1981-12-03 Progressive multifocal ophthalmic lenses
SG531/86A SG53186G (en) 1980-12-05 1986-06-12 Ophthalmic lenses
HK737/86A HK73786A (en) 1980-12-05 1986-10-02 Ophthalmic lenses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17156980A JPS5794714A (en) 1980-12-05 1980-12-05 Progressive multifocus lens

Related Child Applications (2)

Application Number Title Priority Date Filing Date
JP8840482A Division JPS5824114A (en) 1982-05-25 1982-05-25 Progressive multifocus lens
JP8840382A Division JPS5824113A (en) 1982-05-25 1982-05-25 Progressive multifocus lens

Publications (2)

Publication Number Publication Date
JPS5794714A true JPS5794714A (en) 1982-06-12
JPH0239766B2 JPH0239766B2 (en) 1990-09-07

Family

ID=15925567

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17156980A Granted JPS5794714A (en) 1980-12-05 1980-12-05 Progressive multifocus lens

Country Status (1)

Country Link
JP (1) JPS5794714A (en)

Cited By (6)

* 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
JPS62500122A (en) * 1984-08-17 1987-01-16 オプティシェ　ヴェルケジ−・ロ−デンストック multifocal lens
JPH04338918A (en) * 1991-07-29 1992-11-26 Seiko Epson Corp Progressive multifocus lens
US5886766A (en) * 1994-10-06 1999-03-23 Seiko Epson Corporation Progressive multifocal lens and manufacturing method therefor
WO2006129707A1 (en) * 2005-06-03 2006-12-07 Hoya Healthcare Corporation Eye-use lens
JP2021509728A (en) * 2017-12-31 2021-04-01 ニューロレンズ インコーポレイテッド Low convergence negative power glasses

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5046348A (en) * 1973-08-16 1975-04-25
JPS5511285A (en) * 1978-05-12 1980-01-26 Essilor Int Finishing lens refractive surface

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5046348A (en) * 1973-08-16 1975-04-25
JPS5511285A (en) * 1978-05-12 1980-01-26 Essilor Int Finishing lens refractive surface

Cited By (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
JPH0239768B2 (en) * 1982-09-29 1990-09-07 Seiko Epson Corp
JPS62500122A (en) * 1984-08-17 1987-01-16 オプティシェ　ヴェルケジ−・ロ−デンストック multifocal lens
JPH04338918A (en) * 1991-07-29 1992-11-26 Seiko Epson Corp Progressive multifocus lens
US5886766A (en) * 1994-10-06 1999-03-23 Seiko Epson Corporation Progressive multifocal lens and manufacturing method therefor
WO2006129707A1 (en) * 2005-06-03 2006-12-07 Hoya Healthcare Corporation Eye-use lens
US7819523B2 (en) 2005-06-03 2010-10-26 Hoya Healthcare Corporation Ocular lens
JP4807801B2 (en) * 2005-06-03 2011-11-02 Ｈｏｙａ株式会社 Design method for progressive multifocal contact lenses
JP2021509728A (en) * 2017-12-31 2021-04-01 ニューロレンズ インコーポレイテッド Low convergence negative power glasses

Also Published As

Publication number Publication date
JPH0239766B2 (en) 1990-09-07

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