GB1239620A - - Google Patents
Info
- Publication number
- GB1239620A GB1239620A GB1239620DA GB1239620A GB 1239620 A GB1239620 A GB 1239620A GB 1239620D A GB1239620D A GB 1239620DA GB 1239620 A GB1239620 A GB 1239620A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lens
- eye
- infinity
- circle
- distances
- 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
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)
Abstract
1,239,620. Ophthalmic lenses. SOC DES LUNETIERS. Oct. 28, 1968 [Oct. 30, 1967; July 26, 1968], No. 51043/68. Heading G2J. If an eye 1, Fig. 1, looking at an object at infinity along the optical axis 3 of an ophthalmic lens 2 finds that the correction for ametropia is perfect and the lens 2 forms an image at R o , in the absence of eye 1, then when the eye 1 rotates about its centre of rotation O through an angle U the image of an object at infinity should be formed by lens 2 at a point R on sphere 5 centred at O and passing through R o , but in practice a spherical surfaced lens 2 forms a sagittal focus at S and tangential focus at T with the circle of least confusion at I. Accordingly the present lens has a surface shaped to eliminate or reduce the astigmatism TS and/or the field curvature I R particularly in the case of high power toric lenses such as those having a power greater than 12 D required in aphakia. This is achieved by taking a circle, passing through H and having a radius of approximately 27 or 28 mm, and evaluating along the two principal meridians the distances required from points on the circle K, G, etc. to the corrected lens surface and tabulating them as a function of angle U. For a progressive foci lens the correcting surface is evaluated along the vertical meridian on the basis of an object distance which gets progressively less as the eye looks downwardly, or for a lens of two or three focal lengths it is evaluated for the appropriate two or three object distances such as infinity, intermediate and reading distances.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR126369 | 1967-10-30 | ||
FR160767 | 1968-07-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1239620A true GB1239620A (en) | 1971-07-21 |
Family
ID=26180405
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1239620D Expired GB1239620A (en) | 1967-10-30 | 1968-10-28 |
Country Status (3)
Country | Link |
---|---|
US (1) | US3722986A (en) |
DE (1) | DE1805561C3 (en) |
GB (1) | GB1239620A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5444503A (en) * | 1992-03-27 | 1995-08-22 | Carl-Zeiss-Stiftung | Spectacle lens |
EP0857993A2 (en) | 1997-01-16 | 1998-08-12 | Carl Zeiss | Spectacle glass having a spherical front surface and a multifocal back surface, and method for manufacturing the same |
US9618774B2 (en) | 2014-02-10 | 2017-04-11 | Shamir Optical Industry Ltd. | Quasi progressive lenses for eyewear |
Families Citing this family (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3016936C2 (en) * | 1980-05-02 | 1983-12-01 | Fa. Carl Zeiss, 7920 Heidenheim | Spectacle lens with astigmatic power |
EP0597994A4 (en) * | 1991-08-09 | 1994-09-14 | Capricornia Contact Lens | Toric lens with axis mislocation latitude. |
DE4242267A1 (en) * | 1992-12-15 | 1994-06-16 | Rodenstock Optik G | Spectacle lens with astigmatic effect |
ATE224552T1 (en) * | 1994-03-30 | 2002-10-15 | Rodenstock Optik G | PROGRESSIVE LENSES SERIES |
IL118065A0 (en) * | 1995-05-04 | 1996-08-04 | Johnson & Johnson Vision Prod | Aspheric toric lens designs |
US5825455A (en) * | 1996-05-02 | 1998-10-20 | Cabot Safety Intermediate Corporation | Aspheric plano eyewear |
US6276795B1 (en) | 1996-05-02 | 2001-08-21 | Aearo Company | Protective eyewear with adjustable strap |
US6024446A (en) | 1996-05-02 | 2000-02-15 | Cabot Safety Intermediate Corporation | Eyewear with hingedly attached strapped head retainer |
US6149268A (en) * | 1996-05-02 | 2000-11-21 | Cabot Safety Intermediate Corporation | Protective eyewear with at least one ventilation channel |
US6183084B1 (en) * | 1998-07-30 | 2001-02-06 | Johnson & Johnson Vision Care, Inc. | Progressive addition lenses |
US6149271A (en) * | 1998-10-23 | 2000-11-21 | Innotech, Inc. | Progressive addition lenses |
US6609793B2 (en) * | 2000-05-23 | 2003-08-26 | Pharmacia Groningen Bv | Methods of obtaining ophthalmic lenses providing the eye with reduced aberrations |
US8020995B2 (en) | 2001-05-23 | 2011-09-20 | Amo Groningen Bv | Methods of obtaining ophthalmic lenses providing the eye with reduced aberrations |
JP5096662B2 (en) * | 2002-10-04 | 2012-12-12 | カール ツアイス ヴィジョン ゲーエムベーハー | Lens manufacturing method and lens manufactured by the method |
SE0203564D0 (en) | 2002-11-29 | 2002-11-29 | Pharmacia Groningen Bv | Multifocal opthalmic lens |
US7896916B2 (en) * | 2002-11-29 | 2011-03-01 | Amo Groningen B.V. | Multifocal ophthalmic lens |
FR2858693B1 (en) | 2003-08-08 | 2005-10-28 | Essilor Int | METHOD FOR DETERMINING AN OPHTHALMIC LENS USING AN ASTIGMATISM PRESCRIPTION IN VIEW OF FAR AND IN VISION OF PRES |
US7922326B2 (en) | 2005-10-25 | 2011-04-12 | Abbott Medical Optics Inc. | Ophthalmic lens with multiple phase plates |
WO2006068696A1 (en) * | 2004-10-25 | 2006-06-29 | Advanced Medical Optics, Inc. | Ophthalmic lens with multiple phase plates |
DE102005023126B4 (en) * | 2005-05-19 | 2022-06-30 | Rodenstock Gmbh | Series of spectacle lenses, manufacturing process |
US7407283B2 (en) * | 2005-09-14 | 2008-08-05 | Fosta-Tek Optics, Inc. | Goggle lens, method of manufacturing same, and goggle containing same |
US20090262301A1 (en) * | 2008-04-22 | 2009-10-22 | Jennifer Zuba | Toric Contact Lenses Having Selected Spherical Aberration Characteristics |
EP2890287B1 (en) | 2012-08-31 | 2020-10-14 | Amo Groningen B.V. | Multi-ring lens, systems and methods for extended depth of focus |
CN105659152B (en) | 2013-10-04 | 2019-05-03 | 欧福特克有限公司 | For correcting the eyeglass of astigmatism |
WO2016034925A1 (en) | 2014-09-02 | 2016-03-10 | Dave, Jagrat Natavar | Intraocular lens customized for astigmatism or combined astigmatism and presbyopia |
US10028825B2 (en) | 2016-02-09 | 2018-07-24 | Amo Groningen B.V. | Progressive power intraocular lens, and methods of use and manufacture |
US11497599B2 (en) | 2017-03-17 | 2022-11-15 | Amo Groningen B.V. | Diffractive intraocular lenses for extended range of vision |
US11523897B2 (en) | 2017-06-23 | 2022-12-13 | Amo Groningen B.V. | Intraocular lenses for presbyopia treatment |
EP3646110A1 (en) | 2017-06-28 | 2020-05-06 | Amo Groningen B.V. | Diffractive lenses and related intraocular lenses for presbyopia treatment |
WO2019002390A1 (en) | 2017-06-28 | 2019-01-03 | Amo Groningen B.V. | Extended range and related intraocular lenses for presbyopia treatment |
US11327210B2 (en) | 2017-06-30 | 2022-05-10 | Amo Groningen B.V. | Non-repeating echelettes and related intraocular lenses for presbyopia treatment |
NL2023797B1 (en) * | 2019-09-09 | 2021-04-13 | Jozephus Cyrillus Ludovicus Bruls Georgius | Progressive addition eyeglass lens and method for manufacturing the same |
CA3166308A1 (en) | 2019-12-30 | 2021-07-08 | Amo Groningen B.V. | Lenses having diffractive profiles with irregular width for vision treatment |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US949501A (en) * | 1909-06-03 | 1910-02-15 | Zeiss Carl Fa | Spectacle-glass. |
US3169247A (en) * | 1959-12-09 | 1965-02-09 | American Optical Corp | Ophthalmic aspheric lens series |
US3227507A (en) * | 1961-08-16 | 1966-01-04 | Feinbloom William | Corneal contact lens having inner ellipsoidal surface |
-
1968
- 1968-10-26 DE DE1805561A patent/DE1805561C3/en not_active Expired
- 1968-10-28 GB GB1239620D patent/GB1239620A/en not_active Expired
-
1971
- 1971-10-18 US US00190058A patent/US3722986A/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5444503A (en) * | 1992-03-27 | 1995-08-22 | Carl-Zeiss-Stiftung | Spectacle lens |
EP0857993A2 (en) | 1997-01-16 | 1998-08-12 | Carl Zeiss | Spectacle glass having a spherical front surface and a multifocal back surface, and method for manufacturing the same |
US9618774B2 (en) | 2014-02-10 | 2017-04-11 | Shamir Optical Industry Ltd. | Quasi progressive lenses for eyewear |
US10409087B2 (en) | 2014-02-10 | 2019-09-10 | Shamir Optical Industry Ltd. | Quasi progressive lenses for eyewear |
US11226496B2 (en) | 2014-02-10 | 2022-01-18 | Shamir Optical Industry Ltd. | Quasi progressive lenses for eyewear |
Also Published As
Publication number | Publication date |
---|---|
DE1805561C3 (en) | 1980-10-23 |
DE1805561A1 (en) | 1969-05-14 |
DE1805561B2 (en) | 1980-03-06 |
US3722986A (en) | 1973-03-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |