GB186641A - Improvements in lenses - Google Patents

Improvements in lenses

Info

Publication number
GB186641A
GB186641A GB963821A GB963821A GB186641A GB 186641 A GB186641 A GB 186641A GB 963821 A GB963821 A GB 963821A GB 963821 A GB963821 A GB 963821A GB 186641 A GB186641 A GB 186641A
Authority
GB
United Kingdom
Prior art keywords
lenses
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
GB963821A
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.)
EDGAR DERRY TILLYER
Original Assignee
EDGAR DERRY TILLYER
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 EDGAR DERRY TILLYER filed Critical EDGAR DERRY TILLYER
Priority to GB963821A priority Critical patent/GB186641A/en
Publication of GB186641A publication Critical patent/GB186641A/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

Landscapes

  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • Physics & Mathematics (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
GB963821A 1921-03-31 1921-03-31 Improvements in lenses Expired GB186641A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB963821A GB186641A (en) 1921-03-31 1921-03-31 Improvements in lenses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB963821A GB186641A (en) 1921-03-31 1921-03-31 Improvements in lenses

Publications (1)

Publication Number Publication Date
GB186641A true GB186641A (en) 1922-10-02

Family

ID=9875844

Family Applications (1)

Application Number Title Priority Date Filing Date
GB963821A Expired GB186641A (en) 1921-03-31 1921-03-31 Improvements in lenses

Country Status (1)

Country Link
GB (1) GB186641A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002088832A2 (en) * 2001-04-27 2002-11-07 Johnson & Johnson Vision Care, Inc. Progressive addition lenses with prism power added to improve wearer comfort

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002088832A2 (en) * 2001-04-27 2002-11-07 Johnson & Johnson Vision Care, Inc. Progressive addition lenses with prism power added to improve wearer comfort
WO2002088832A3 (en) * 2001-04-27 2004-02-26 Johnson & Johnson Vision Care Progressive addition lenses with prism power added to improve wearer comfort

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