FR1112429A - Optical lens - Google Patents

Optical lens

Info

Publication number
FR1112429A
FR1112429A FR1112429DA FR1112429A FR 1112429 A FR1112429 A FR 1112429A FR 1112429D A FR1112429D A FR 1112429DA FR 1112429 A FR1112429 A FR 1112429A
Authority
FR
France
Prior art keywords
optical lens
lens
optical
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
Other languages
French (fr)
Inventor
John Henry Jeffree
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 filed Critical
Application granted granted Critical
Publication of FR1112429A publication Critical patent/FR1112429A/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)
FR1112429D 1953-09-21 1954-09-21 Optical lens Expired FR1112429A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1112429X 1953-09-21

Publications (1)

Publication Number Publication Date
FR1112429A true FR1112429A (en) 1956-03-14

Family

ID=10874916

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1112429D Expired FR1112429A (en) 1953-09-21 1954-09-21 Optical lens

Country Status (1)

Country Link
FR (1) FR1112429A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2444955A1 (en) * 1978-12-20 1980-07-18 Le I Tochnoi OPHTHALMIC OPTICAL SYSTEM METHOD FOR MEASURING ITS REFRACTION AND MOUNTING FOR THIS SYSTEM

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2444955A1 (en) * 1978-12-20 1980-07-18 Le I Tochnoi OPHTHALMIC OPTICAL SYSTEM METHOD FOR MEASURING ITS REFRACTION AND MOUNTING FOR THIS SYSTEM

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