IT956454B - Lenti a contatto a basso indice di rifrazione - Google Patents

Lenti a contatto a basso indice di rifrazione

Info

Publication number
IT956454B
IT956454B IT25538/72A IT2553872A IT956454B IT 956454 B IT956454 B IT 956454B IT 25538/72 A IT25538/72 A IT 25538/72A IT 2553872 A IT2553872 A IT 2553872A IT 956454 B IT956454 B IT 956454B
Authority
IT
Italy
Prior art keywords
contact lenses
refraction index
low refraction
low
index
Prior art date
Application number
IT25538/72A
Other languages
English (en)
Original Assignee
Du Pont
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 Du Pont filed Critical Du Pont
Application granted granted Critical
Publication of IT956454B publication Critical patent/IT956454B/it

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
    • G02C7/04—Contact lenses for the eyes
    • G02C7/041—Contact lenses for the eyes bifocal; multifocal
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G02B1/041—Lenses
    • G02B1/043—Contact lenses
    • 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
    • G02C7/04—Contact lenses for the eyes

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Ophthalmology & Optometry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Health & Medical Sciences (AREA)
  • Eyeglasses (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
IT25538/72A 1971-06-11 1972-06-10 Lenti a contatto a basso indice di rifrazione IT956454B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15207671A 1971-06-11 1971-06-11

Publications (1)

Publication Number Publication Date
IT956454B true IT956454B (it) 1973-10-10

Family

ID=22541421

Family Applications (1)

Application Number Title Priority Date Filing Date
IT25538/72A IT956454B (it) 1971-06-11 1972-06-10 Lenti a contatto a basso indice di rifrazione

Country Status (6)

Country Link
CA (1) CA964908A (it)
DE (1) DE2228528A1 (it)
FR (1) FR2140638B1 (it)
GB (1) GB1367846A (it)
IT (1) IT956454B (it)
NL (1) NL7207878A (it)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129155B (en) * 1982-10-13 1987-05-20 Ng Trustees & Nominees Ltd Bifocal contact lenses
JPS6157908A (ja) * 1984-08-30 1986-03-25 Seizo Miyata 光学用樹脂組成物
GB2217869A (en) * 1988-04-22 1989-11-01 Ceskoslovenska Akademie Ved Contact lenses
US5173723A (en) * 1990-10-02 1992-12-22 Volk Donald A Aspheric ophthalmic accommodating lens design for intraocular lens and contact lens
US5198844A (en) * 1991-07-10 1993-03-30 Johnson & Johnson Vision Products, Inc. Segmented multifocal contact lens
CZ282423B6 (cs) * 1992-01-28 1997-07-16 Johnson & Johnson Vision Products, Inc. Multifokální refrakční čočka a způsob její výroby
US5936704A (en) 1997-12-22 1999-08-10 Gabrielian; Grant Marked contact lens bearing optical marking element
US6024448A (en) * 1998-03-31 2000-02-15 Johnson & Johnson Vision Products, Inc. Contact lenses bearing identifying marks
US6203156B1 (en) 1998-03-31 2001-03-20 Johnson & Johnson Vision Care, Inc. Contact lenses bearing marks
US6609041B1 (en) 1999-05-05 2003-08-19 Johnson & Johnson Vision Care, Inc. Method and system for SKU tracking and changeover
GB2364136B (en) * 2000-06-29 2004-11-17 Brian David Cantor Multifocal contact lenses
US7591556B2 (en) * 2005-06-24 2009-09-22 Boston Foundation For Sight Scleral contact lens with grooves and method of making lens
EP2116888A4 (en) * 2007-01-16 2011-09-14 Menicon Co Ltd CONTACT LENS AND MANUFACTURING METHOD THEREFOR

Also Published As

Publication number Publication date
NL7207878A (it) 1972-12-13
FR2140638A1 (it) 1973-01-19
DE2228528A1 (de) 1973-01-04
FR2140638B1 (it) 1977-12-23
CA964908A (en) 1975-03-25
GB1367846A (en) 1974-09-25

Similar Documents

Publication Publication Date Title
IT965964B (it) Lenti prismatiche per apparecchi di illuminazione
YU35681B (en) Lens with progressively varying refractive index
AT345586B (de) Brillengestell
AT284505B (de) Kontaktlinse
FR2288321A1 (fr) Objectif triplet a surfaces aspheriques
IT956454B (it) Lenti a contatto a basso indice di rifrazione
IT973777B (it) Perfezionamento nelle lenti catottriche
NL156665B (nl) Glazen lensstructuur met een gradient in de brekingsindex.
NL164427C (nl) Opto-elektronische koppelinrichting.
DK116683B (da) Glasmateriale med højt brydningsforhold.
BR7200173D0 (pt) Densidade otica
IT956361B (it) Lente a contatto
IT959184B (it) Insieme a vetri
IT965160B (it) Apparecchio di fotocopiatura con di spositivo scansore ottico
BE790023A (fr) Perfectionnements a la fabrication des cables telephoniques multiconducteurs
BE783066A (fr) Objectif grand angulaire
IT951213B (it) Limitatore ottico di esplorazione
BE780898A (fr) Osmose inverse - module plan
ES170718Y (es) Dispositivo optico plurifuncional.
AT322874B (de) Symmetrisch gebautes reproduktionsobjektiv
SE389231B (sv) Optisk mottagare
IT993277B (it) Limitatore ottico
AT317933B (de) Lichtoptisches Liniergerät
AT321611B (de) Lichtstarkes katadioptrisches Objektiv
CH531728A (de) Mikroskop mit Objektträger