FR2393335A1 - Verre progressif pour la correction de la presbytie - Google Patents

Verre progressif pour la correction de la presbytie

Info

Publication number
FR2393335A1
FR2393335A1 FR7717966A FR7717966A FR2393335A1 FR 2393335 A1 FR2393335 A1 FR 2393335A1 FR 7717966 A FR7717966 A FR 7717966A FR 7717966 A FR7717966 A FR 7717966A FR 2393335 A1 FR2393335 A1 FR 2393335A1
Authority
FR
France
Prior art keywords
progressive
lens
presbyopia
dioptres
calotte
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
FR7717966A
Other languages
English (en)
Other versions
FR2393335B1 (fr
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7717966A priority Critical patent/FR2393335A1/fr
Publication of FR2393335A1 publication Critical patent/FR2393335A1/fr
Application granted granted Critical
Publication of FR2393335B1 publication Critical patent/FR2393335B1/fr
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

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

Ce verre est du type comportant une zone de vision de loin constituée par une calotte sphérique de rayon R, une zone de vision de près constituée par une calotte sphérique de rayon r et une zone de vision intermédiaire à rayon de courbure variable entre les valeurs de R et de r. Selon l'invention, la partie progressive de la zone de vision intermédiaire est constituée par l'enveloppe d'une succession de dioptres dont les différents rayons ont pour origine le segment de droite qui, joignant les centres des calottes sphériques des deux autres zones de vision, constitue l'axe géométrique de fabrication. La zone de vision progressive peut être réalisée sur la face convexe, sur la face concave ou sur les deux faces du verre.
FR7717966A 1977-06-03 1977-06-03 Verre progressif pour la correction de la presbytie Granted FR2393335A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7717966A FR2393335A1 (fr) 1977-06-03 1977-06-03 Verre progressif pour la correction de la presbytie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7717966A FR2393335A1 (fr) 1977-06-03 1977-06-03 Verre progressif pour la correction de la presbytie

Publications (2)

Publication Number Publication Date
FR2393335A1 true FR2393335A1 (fr) 1978-12-29
FR2393335B1 FR2393335B1 (fr) 1980-02-01

Family

ID=9191993

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7717966A Granted FR2393335A1 (fr) 1977-06-03 1977-06-03 Verre progressif pour la correction de la presbytie

Country Status (1)

Country Link
FR (1) FR2393335A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039544A2 (fr) * 1980-04-12 1981-11-11 Kabushiki Kaisha Hoya Lens Lentille multifocale progressive
US4461550A (en) * 1980-04-30 1984-07-24 Essilor International Cie Generale D'optique Progressive ophthalmic lens
US4484804A (en) * 1980-07-09 1984-11-27 Essilor International Cie Generale D'optique Multifocal ophthalmic lenses
FR2565358A1 (fr) * 1984-05-29 1985-12-06 Bach Guy Systemes optiques anastigmatiques a surfaces aspheriques
FR2676551A1 (fr) * 1991-03-15 1992-11-20 Ishida Koki Seisakusho Co Ltd Lentille pour presbytie ne presentant aucune aberration a courte distance ni a distance intermediaire.

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0039544A2 (fr) * 1980-04-12 1981-11-11 Kabushiki Kaisha Hoya Lens Lentille multifocale progressive
EP0039544A3 (en) * 1980-04-12 1982-10-27 Kabushiki Kaisha Hoya Lens Progressive multi-focal lenses
US4472036A (en) * 1980-04-12 1984-09-18 Kabushiki Kaisha Hoya Lens Progressive multi-focal lenses
US4461550A (en) * 1980-04-30 1984-07-24 Essilor International Cie Generale D'optique Progressive ophthalmic lens
US4484804A (en) * 1980-07-09 1984-11-27 Essilor International Cie Generale D'optique Multifocal ophthalmic lenses
FR2565358A1 (fr) * 1984-05-29 1985-12-06 Bach Guy Systemes optiques anastigmatiques a surfaces aspheriques
FR2676551A1 (fr) * 1991-03-15 1992-11-20 Ishida Koki Seisakusho Co Ltd Lentille pour presbytie ne presentant aucune aberration a courte distance ni a distance intermediaire.

Also Published As

Publication number Publication date
FR2393335B1 (fr) 1980-02-01

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Legal Events

Date Code Title Description
MD Transfer of rights in case of death
ST Notification of lapse