FR478320A - multifocal ocular lens - Google Patents

multifocal ocular lens

Info

Publication number
FR478320A
FR478320A FR478320DA FR478320A FR 478320 A FR478320 A FR 478320A FR 478320D A FR478320D A FR 478320DA FR 478320 A FR478320 A FR 478320A
Authority
FR
Grant status
Grant
Patent type
Prior art keywords
ocular lens
multifocal ocular
multifocal
lens
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
Henry Orford Gowlland
Original Assignee
Henry Orford Gowlland
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
Grant date

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B3/00Simple or compound lenses
    • G02B3/02Simple or compound lenses with non-spherical faces
    • G02B3/04Simple or compound lenses with non-spherical faces with continuous faces that are rotationally symmetrical but deviate from a true sphere, e.g. so called "aspheric" lenses
    • GPHYSICS
    • G02OPTICS
    • G02CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00Optical parts
    • G02C7/02Lenses; Lens systems ; Methods of designing lenses
    • G02C7/06Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
    • G02C7/061Spectacle lenses with progressively varying focal power
    • G02C7/063Shape of the progressive surface
FR478320A 1914-04-08 1915-04-08 multifocal ocular lens Expired FR478320A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA478320X 1914-04-08

Publications (1)

Publication Number Publication Date
FR478320A true FR478320A (en) 1915-12-03

Family

ID=1515858

Family Applications (1)

Application Number Title Priority Date Filing Date
FR478320A Expired FR478320A (en) 1914-04-08 1915-04-08 multifocal ocular lens

Country Status (1)

Country Link
FR (1) FR478320A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1145820B (en) * 1956-10-06 1963-03-21 Saint Gobain lens
DE1151955B (en) * 1953-11-25 1963-07-25 & Commerciale Des Ouvriers Lun An optical element with continuously veraenderlicher power
DE1158281B (en) * 1961-08-03 1963-11-28 Wilhelm Peter Soehnges Cornealkontaktlinse
DE1422125B1 (en) * 1954-10-04 1969-09-04 Akademie D Wissenschaften Zu B Lens with different diopters in the far and near vision

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1151955B (en) * 1953-11-25 1963-07-25 & Commerciale Des Ouvriers Lun An optical element with continuously veraenderlicher power
DE1422125B1 (en) * 1954-10-04 1969-09-04 Akademie D Wissenschaften Zu B Lens with different diopters in the far and near vision
DE1145820B (en) * 1956-10-06 1963-03-21 Saint Gobain lens
DE1158281B (en) * 1961-08-03 1963-11-28 Wilhelm Peter Soehnges Cornealkontaktlinse

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