CA981075A - Ophthalmic lenses with progressively varying focal power - Google Patents
Ophthalmic lenses with progressively varying focal powerInfo
- Publication number
- CA981075A CA981075A CA176,833A CA176833A CA981075A CA 981075 A CA981075 A CA 981075A CA 176833 A CA176833 A CA 176833A CA 981075 A CA981075 A CA 981075A
- Authority
- CA
- Canada
- Prior art keywords
- focal power
- ophthalmic lenses
- progressively varying
- varying focal
- 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.)
- Expired
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)
- Eyeglasses (AREA)
- Lenses (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7226947A FR2193989B2 (it) | 1972-07-26 | 1972-07-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA981075A true CA981075A (en) | 1976-01-06 |
Family
ID=9102395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA176,833A Expired CA981075A (en) | 1972-07-26 | 1973-07-19 | Ophthalmic lenses with progressively varying focal power |
Country Status (17)
Country | Link |
---|---|
US (1) | US3910691A (it) |
JP (1) | JPS5220271B2 (it) |
AT (1) | AT328765B (it) |
AU (1) | AU471562B2 (it) |
BE (1) | BE802400A (it) |
BR (1) | BR7305631D0 (it) |
CA (1) | CA981075A (it) |
CS (1) | CS167393B2 (it) |
DD (1) | DD107152A5 (it) |
DE (1) | DE2336708C3 (it) |
FR (1) | FR2193989B2 (it) |
GB (1) | GB1403675A (it) |
HU (1) | HU167920B (it) |
IT (1) | IT991863B (it) |
NL (1) | NL176811C (it) |
RO (1) | RO72099A (it) |
SU (1) | SU515473A3 (it) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4055379A (en) * | 1973-08-16 | 1977-10-25 | American Optical Corporation | Multifocal lens |
US4056311A (en) * | 1973-08-16 | 1977-11-01 | American Optical Corporation | Progressive power ophthalmic lens having a plurality of viewing zones with non-discontinuous variations therebetween |
CA1012392A (en) * | 1973-08-16 | 1977-06-21 | American Optical Corporation | Progressive power ophthalmic lens |
DE2610203B2 (de) * | 1976-03-11 | 1981-01-22 | Optische Werke G. Rodenstock, 8000 Muenchen | Progressives Brillenglas |
DE2814916C3 (de) | 1978-04-06 | 1982-01-07 | Optische Werke G. Rodenstock, 8000 München | Brillenglas mit einem zwischen Fernteil und Nahteil liegenden Progressionsbereich |
FR2425653A1 (fr) * | 1978-05-12 | 1979-12-07 | Essilor Int | Procede pour elaborer une surface de refraction d'une lentille ophtalmique a puissance focale progressivement variable |
US4292030A (en) * | 1980-01-16 | 1981-09-29 | Itek Corporation | Teaching device for progressive power lenses |
US4307945A (en) * | 1980-02-14 | 1981-12-29 | Itek Corporation | Progressively varying focal power opthalmic lens |
JPS57210320A (en) * | 1981-06-19 | 1982-12-23 | Hoya Corp | Progressive focus lens |
JPS5958415A (ja) * | 1982-09-29 | 1984-04-04 | Seiko Epson Corp | 累進多焦点レンズ |
GB2146791B (en) * | 1983-09-16 | 1987-01-28 | Suwa Seikosha Kk | Progressive multifocal ophthalmic lens |
FR2617989B1 (fr) * | 1987-07-07 | 1989-10-27 | Essilor Int | Lentille ophtalmique multifocale |
US5000559A (en) * | 1988-02-29 | 1991-03-19 | Nikon Corporation | Ophthalmic lenses having progressively variable refracting power |
DE3901775A1 (de) * | 1988-06-22 | 1990-07-26 | Rodenstock Optik G | Brillenglas mit einem sich aendernden brechungsindex |
US5048945A (en) * | 1989-07-14 | 1991-09-17 | Nikon Corporation | Progressive power lens |
WO1992012452A1 (en) * | 1990-12-27 | 1992-07-23 | Seiko Epson Corporation | Progressive lens |
US5110199A (en) * | 1991-02-01 | 1992-05-05 | Takeshi Ishida | Distortion free ophthalmic lens for presbyopia having wide range distinct views |
FR2683642B1 (fr) * | 1991-11-12 | 1994-01-14 | Essilor Internal Cie Gle Optique | Lentille ophtalmique multifocale progressive. |
FR2683643B1 (fr) * | 1991-11-12 | 1994-01-14 | Essilor Internal Cie Gle Optique | Lentille ophtalmique multifocale progressive. |
DE4210008A1 (de) * | 1992-03-27 | 1993-09-30 | Zeiss Carl Fa | Brillenlinse |
FR2704327B1 (fr) * | 1993-04-23 | 1995-06-23 | Essilor Int | Paire de lentilles ophtalmiques multifocales progressives. |
JPH06337380A (ja) * | 1993-05-31 | 1994-12-06 | Nikon Corp | 累進多焦点レンズ |
ATE224552T1 (de) * | 1994-03-30 | 2002-10-15 | Rodenstock Optik G | Serie progressiver brillengläser |
EP0754312A1 (de) * | 1994-10-29 | 1997-01-22 | Optische Werke G. Rodenstock | Serie progressiver brillengläser |
US5861934A (en) * | 1996-05-06 | 1999-01-19 | Innotech, Inc. | Refractive index gradient lens |
EP2075622A3 (fr) | 2007-11-27 | 2010-01-13 | Optofinanz AG | Lentilles ophtalmiques multifocales progressives à distribution constante |
EP2255243A2 (en) * | 2008-02-20 | 2010-12-01 | Swissphonics SA | Progressive multifocal ophthalmic lenses identically optimized over a wide range of refractive indices, base curves and additions |
WO2019055991A1 (en) | 2017-09-18 | 2019-03-21 | Indizen Optical Technologies of America, LLC | OPHTHALMIC LENS DESIGN INCORPORATING A VISUAL ACUITY PROFILE |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2109474A (en) * | 1931-12-07 | 1938-03-01 | Evans Charles Ernest | Spectacle lens |
DE1151955B (de) * | 1953-11-25 | 1963-07-25 | & Commerciale Des Ouvriers Lun | Optisches Element mit stetig veraenderlicher Brechkraft |
US2878721A (en) * | 1954-02-03 | 1959-03-24 | Farrand Optical Co Inc | Multifocal ophthalmic lenses |
DE1198703B (de) * | 1955-03-09 | 1965-08-12 | Lunetiers Cottet Soc D | Einrichtung zum Schleifen einer Linse variabler Brechkraft |
FR1509090A (fr) * | 1966-11-29 | 1968-01-12 | Lunetiers Cottet Poichet Soc D | Perfectionnements aux lentilles ophtalmiques à puissance focale progressivement variable |
US3468067A (en) * | 1967-02-13 | 1969-09-23 | Lawrence H Larson | Apparatus for use in grinding lenses |
BE755907A (fr) * | 1969-09-11 | 1971-02-15 | Lunetiers | Lentilles a puissance focale progressive |
US3711191A (en) * | 1971-09-16 | 1973-01-16 | L Tagnon | Aberration corrected ophthalmic progressive power lenses |
-
1972
- 1972-07-26 FR FR7226947A patent/FR2193989B2/fr not_active Expired
-
1973
- 1973-07-16 BE BE133528A patent/BE802400A/xx not_active IP Right Cessation
- 1973-07-19 DE DE2336708A patent/DE2336708C3/de not_active Expired
- 1973-07-19 CA CA176,833A patent/CA981075A/en not_active Expired
- 1973-07-20 NL NLAANVRAGE7310190,A patent/NL176811C/xx not_active IP Right Cessation
- 1973-07-20 GB GB3469073A patent/GB1403675A/en not_active Expired
- 1973-07-23 US US381476A patent/US3910691A/en not_active Expired - Lifetime
- 1973-07-24 AT AT650873A patent/AT328765B/de not_active IP Right Cessation
- 1973-07-24 DD DD172484A patent/DD107152A5/xx unknown
- 1973-07-25 SU SU1942491A patent/SU515473A3/ru active
- 1973-07-25 AU AU58511/73A patent/AU471562B2/en not_active Expired
- 1973-07-25 IT IT69234/73A patent/IT991863B/it active
- 1973-07-25 HU HUEI487A patent/HU167920B/hu unknown
- 1973-07-25 JP JP48083962A patent/JPS5220271B2/ja not_active Expired
- 1973-07-25 RO RO7375583A patent/RO72099A/ro unknown
- 1973-07-25 CS CS5319A patent/CS167393B2/cs unknown
- 1973-07-25 BR BR5631/73A patent/BR7305631D0/pt unknown
Also Published As
Publication number | Publication date |
---|---|
DD107152A5 (it) | 1974-07-12 |
DE2336708B2 (de) | 1980-07-03 |
AT328765B (de) | 1976-04-12 |
FR2193989B2 (it) | 1975-03-07 |
NL176811C (nl) | 1985-06-03 |
FR2193989A2 (it) | 1974-02-22 |
BE802400A (fr) | 1973-11-16 |
GB1403675A (en) | 1975-08-28 |
DE2336708C3 (de) | 1981-03-12 |
AU471562B2 (en) | 1976-04-29 |
BR7305631D0 (pt) | 1974-08-22 |
NL176811B (nl) | 1985-01-02 |
HU167920B (it) | 1976-01-28 |
RO72099A (ro) | 1981-06-26 |
US3910691A (en) | 1975-10-07 |
AU5851173A (en) | 1975-01-30 |
SU515473A3 (ru) | 1976-05-25 |
CS167393B2 (it) | 1976-04-29 |
JPS4959652A (it) | 1974-06-10 |
DE2336708A1 (de) | 1974-02-07 |
JPS5220271B2 (it) | 1977-06-02 |
ATA650873A (de) | 1975-06-15 |
NL7310190A (it) | 1974-01-29 |
IT991863B (it) | 1975-08-30 |
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