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ZA888415B - Optic zone phase channels - Google Patents

Optic zone phase channels

Info

Publication number
ZA888415B
ZA888415B ZA888415A ZA888415A ZA888415B ZA 888415 B ZA888415 B ZA 888415B ZA 888415 A ZA888415 A ZA 888415A ZA 888415 A ZA888415 A ZA 888415A ZA 888415 B ZA888415 B ZA 888415B
Authority
ZA
South Africa
Prior art keywords
optic zone
phase channels
zone phase
channels
optic
Prior art date
Application number
ZA888415A
Other languages
English (en)
Inventor
Allen L Cohen
L Cohen Allen
Original Assignee
L Cohen Allen
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 L Cohen Allen filed Critical L Cohen Allen
Publication of ZA888415B publication Critical patent/ZA888415B/xx

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1876—Diffractive Fresnel lenses; Zone plates; Kinoforms
    • G02B5/189—Structurally combined with optical elements not having diffractive power
    • G02B5/1895—Structurally combined with optical elements not having diffractive power such optical elements having dioptric power
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1876—Diffractive Fresnel lenses; Zone plates; Kinoforms
    • 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
    • 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
    • G02C7/042—Simultaneous type
    • 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
    • G02C7/044—Annular configuration, e.g. pupil tuned
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C2202/00—Generic optical aspects applicable to one or more of the subgroups of G02C7/00
    • G02C2202/20—Diffractive and Fresnel lenses or lens portions

Landscapes

  • Physics & Mathematics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Health & Medical Sciences (AREA)
  • Eyeglasses (AREA)
  • Prostheses (AREA)
  • Materials For Medical Uses (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Diffracting Gratings Or Hologram Optical Elements (AREA)
  • Surface Treatment Of Optical Elements (AREA)
  • Laminated Bodies (AREA)
ZA888415A 1987-11-12 1988-11-10 Optic zone phase channels ZA888415B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/120,265 US4881804A (en) 1987-11-12 1987-11-12 Multifocal phase plate with a pure refractive portion

Publications (1)

Publication Number Publication Date
ZA888415B true ZA888415B (en) 1989-07-26

Family

ID=22389213

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA888415A ZA888415B (en) 1987-11-12 1988-11-10 Optic zone phase channels

Country Status (14)

Country Link
US (1) US4881804A (xx)
EP (1) EP0316162B1 (xx)
JP (1) JP2798399B2 (xx)
KR (1) KR0133918B1 (xx)
CN (1) CN1018202B (xx)
AT (1) ATE129078T1 (xx)
AU (1) AU605725B2 (xx)
CA (1) CA1336654C (xx)
DE (1) DE3854569T2 (xx)
ES (1) ES2078220T3 (xx)
GR (1) GR3018458T3 (xx)
IE (1) IE71665B1 (xx)
IL (1) IL88346A (xx)
ZA (1) ZA888415B (xx)

Families Citing this family (117)

* Cited by examiner, † Cited by third party
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US5144483A (en) * 1986-05-14 1992-09-01 Cohen Allen L Diffractive multifocal optical device
US5225858A (en) * 1987-06-01 1993-07-06 Valdemar Portney Multifocal ophthalmic lens
US4881805A (en) * 1987-11-12 1989-11-21 Cohen Allen L Progressive intensity phase bifocal
US5056908A (en) * 1987-11-12 1991-10-15 Cohen Allen L Optic zone phase channels
US5076684A (en) * 1988-04-01 1991-12-31 Minnesota Mining And Manufacturing Company Multi-focal diffractive ophthalmic lenses
US5121980A (en) * 1989-04-19 1992-06-16 Cohen Allen L Small aperture multifocal
GB9008582D0 (en) * 1990-04-17 1990-06-13 Pilkington Diffractive Lenses Method and contact lenses for treating presbyobia
GB9008577D0 (en) * 1990-04-17 1990-06-13 Pilkington Diffractive Lenses Rigid gas permeable lenses
US5096285A (en) * 1990-05-14 1992-03-17 Iolab Corporation Multifocal multizone diffractive ophthalmic lenses
US5229797A (en) * 1990-08-08 1993-07-20 Minnesota Mining And Manufacturing Company Multifocal diffractive ophthalmic lenses
US5760871A (en) * 1993-01-06 1998-06-02 Holo-Or Ltd. Diffractive multi-focal lens
US5895422A (en) * 1993-06-17 1999-04-20 Hauber; Frederick A. Mixed optics intraocular achromatic lens
US5699142A (en) * 1994-09-01 1997-12-16 Alcon Laboratories, Inc. Diffractive multifocal ophthalmic lens
US5742431A (en) * 1995-03-30 1998-04-21 Eastman Kodak Company Catadioptric lens system incorporating diffractive achromatization
US5702440A (en) 1996-01-26 1997-12-30 Allergan Multifocal ophthalmic lens for dim-lighting conditions
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EP0109753B1 (en) * 1982-10-27 1988-07-27 Pilkington Plc Bifocal contact lens comprising a plurality of concentric zones
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Also Published As

Publication number Publication date
IE71665B1 (en) 1997-02-26
EP0316162A3 (en) 1990-07-18
CA1336654C (en) 1995-08-15
CN1018202B (zh) 1992-09-09
IL88346A (en) 1992-05-25
IL88346A0 (en) 1989-06-30
AU605725B2 (en) 1991-01-17
GR3018458T3 (en) 1996-03-31
US4881804A (en) 1989-11-21
CN1035363A (zh) 1989-09-06
IE883374L (en) 1989-05-12
KR890008584A (ko) 1989-07-12
AU2501888A (en) 1989-05-18
KR0133918B1 (ko) 1998-04-20
JPH01154119A (ja) 1989-06-16
EP0316162B1 (en) 1995-10-11
ATE129078T1 (de) 1995-10-15
JP2798399B2 (ja) 1998-09-17
EP0316162A2 (en) 1989-05-17
ES2078220T3 (es) 1995-12-16
DE3854569T2 (de) 1996-03-21
DE3854569D1 (de) 1995-11-16

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