AU1180283A - Ophthalmic lens having a progressively variable focal power - Google Patents

Ophthalmic lens having a progressively variable focal power

Info

Publication number
AU1180283A
AU1180283A AU11802/83A AU1180283A AU1180283A AU 1180283 A AU1180283 A AU 1180283A AU 11802/83 A AU11802/83 A AU 11802/83A AU 1180283 A AU1180283 A AU 1180283A AU 1180283 A AU1180283 A AU 1180283A
Authority
AU
Australia
Prior art keywords
ophthalmic lens
focal power
variable focal
progressively variable
progressively
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
AU11802/83A
Other versions
AU543295B2 (en
Inventor
Akira Kitani
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.)
Hoya Lens Corp
Original Assignee
Hoya Lens Corp
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
Priority claimed from JP57019863A external-priority patent/JPS57155854A/en
Application filed by Hoya Lens Corp filed Critical Hoya Lens Corp
Publication of AU1180283A publication Critical patent/AU1180283A/en
Application granted granted Critical
Publication of AU543295B2 publication Critical patent/AU543295B2/en
Anticipated expiration legal-status Critical
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
    • G02C7/063—Shape of the progressive surface
    • G02C7/065—Properties on the principal line
    • 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)
AU11802/83A 1982-02-12 1983-02-24 Ophthalmic lens having a progressively variable focal power Expired AU543295B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP57019863A JPS57155854A (en) 1981-02-24 1982-02-12 Digital device for identifying digital speech-to-data signal
JP57-198633 1982-11-12

Publications (2)

Publication Number Publication Date
AU1180283A true AU1180283A (en) 1984-05-17
AU543295B2 AU543295B2 (en) 1985-04-18

Family

ID=12011052

Family Applications (1)

Application Number Title Priority Date Filing Date
AU11802/83A Expired AU543295B2 (en) 1982-02-12 1983-02-24 Ophthalmic lens having a progressively variable focal power

Country Status (1)

Country Link
AU (1) AU543295B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8528460D0 (en) * 1985-11-19 1985-12-24 Sola Int Holdings Multifocal lens

Also Published As

Publication number Publication date
AU543295B2 (en) 1985-04-18

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Legal Events

Date Code Title Description
MK14 Patent ceased section 143(a) (annual fees not paid) or expired