GB876798A - Improvements in or relating to optical lenses - Google Patents

Improvements in or relating to optical lenses

Info

Publication number
GB876798A
GB876798A GB31201/57A GB3120157A GB876798A GB 876798 A GB876798 A GB 876798A GB 31201/57 A GB31201/57 A GB 31201/57A GB 3120157 A GB3120157 A GB 3120157A GB 876798 A GB876798 A GB 876798A
Authority
GB
United Kingdom
Prior art keywords
lens
astigmatism
optical lenses
meridian
oct
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.)
Expired
Application number
GB31201/57A
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.)
Compagnie de Saint Gobain SA
Original Assignee
Compagnie de Saint Gobain 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
Application filed by Compagnie de Saint Gobain SA filed Critical Compagnie de Saint Gobain SA
Publication of GB876798A publication Critical patent/GB876798A/en
Expired 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
    • G02C7/068—Special properties achieved by the combination of the front and back surfaces
    • 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

876,798. Optical lenses. COMPAGNIE DE SAINT-GOBAIN. Oct. 4, 1957 [Oct. 6, 1956; Aug. 13, 1957], No. 31201/57. Drawings to Specification. Class 97(1) An optical lens is defined by surfaces of revolution, at least one of which has a meridian of continuously varying curvature and has a substantially uniform astigmatism. For correcting presbyopia, in the absence of crystalline or corneal astigmatism, the other lens surface may have an equal and opposite astigmatism and may have a meridian of constant curvature.Such a lens may be made by securing a lens blank on a mount and grinding it by rotating a grinding element about an axis, which is determined by either of two methods described in the Specification.
GB31201/57A 1956-10-06 1957-10-04 Improvements in or relating to optical lenses Expired GB876798A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR876798X 1956-10-06

Publications (1)

Publication Number Publication Date
GB876798A true GB876798A (en) 1961-09-06

Family

ID=9360740

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31201/57A Expired GB876798A (en) 1956-10-06 1957-10-04 Improvements in or relating to optical lenses

Country Status (1)

Country Link
GB (1) GB876798A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3331763A1 (en) * 1983-09-02 1985-05-15 Optische Werke G. Rodenstock, 8000 München Bilaterally aspherical progressive spectacle lens
DE3331757A1 (en) * 1983-09-02 1985-05-23 Optische Werke G. Rodenstock, 8000 München Bilaterally aspherical progressive spectacle lens
US6000798A (en) * 1997-10-06 1999-12-14 Innotech Inc. Ophthalmic optic devices
US6139148A (en) * 1999-02-04 2000-10-31 Johnson & Johnson Vision Care, Inc. Progressive addition lenses having regressive surfaces
US6284159B1 (en) 1992-08-18 2001-09-04 Q2100, Inc. Progressive lens apparatus and process
CN102681207A (en) * 2011-03-08 2012-09-19 精工爱普生株式会社 Progressive-power lens and progressive-power lens design method

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3331763A1 (en) * 1983-09-02 1985-05-15 Optische Werke G. Rodenstock, 8000 München Bilaterally aspherical progressive spectacle lens
DE3331757A1 (en) * 1983-09-02 1985-05-23 Optische Werke G. Rodenstock, 8000 München Bilaterally aspherical progressive spectacle lens
US6284159B1 (en) 1992-08-18 2001-09-04 Q2100, Inc. Progressive lens apparatus and process
US6579478B2 (en) 1992-08-18 2003-06-17 Q2100, Inc. Progressive lens apparatus and process
US6000798A (en) * 1997-10-06 1999-12-14 Innotech Inc. Ophthalmic optic devices
US6139148A (en) * 1999-02-04 2000-10-31 Johnson & Johnson Vision Care, Inc. Progressive addition lenses having regressive surfaces
CN102681207A (en) * 2011-03-08 2012-09-19 精工爱普生株式会社 Progressive-power lens and progressive-power lens design method
CN102681207B (en) * 2011-03-08 2015-06-24 豪雅光学制造菲律宾公司 Progressive-power lens and progressive-power lens design method

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