Patent US5517260A successfully refreshed from Google Patents.
US5517260A
Expired / Lapsed
US
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Ophthalmic lens having a progressive multifocal zone and method of manufacturing same
Assignee: VARI-SITE Inc
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Filing: 1994-03-28
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Granted: 1996-05-14
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Expires: 2014-03-28
Abstract
Abstract An ophthalmic lens including a first zone located in a central portion of the ophthalmic lens such that a central axis intersects the center of the first zone. The first zone having a spherical posterior surface for correcting distance vision. The ophthalmic lens further includes a second zone, positioned about the periphery of the first zone, and having a posterior surface of revolution defined by rotating a portion of a spiral curve about a central axis of the ophthalmic lens. Additionally, the ophthalmic lens may include a third zone positioned about the periphery of the second zone, and having a spherical posterior surface for correcting near vision.
Inventors
- 👤 George E. Glady
- 👤 George K. Meszaros
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:45
CPC Classifications
G; G02; G02C; G02C7/00; G02C7/02; G02C7/06; G02C7/061; G02C7/063; G02C7/024; G02C7/028; G02C7/04; G02C7/041; G02C7/042; G02C7/044
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
29 words
An ophthalmic lens comprising: a progressive zone having a surface of revolution defined by rotating a portion of a spiral curve about a central axis of the ophthalmic lens.
Claim 2
Dependent Claim
29 words
An ophthalmic lens comprising: a progressive zone having a surface of revolution defined by rotating a portion of a spiral curve about a central axis of the ophthalmic lens.
Claim 3
Dependent Claim
45 words
The ophthalmic lens of claim 1, further comprising: a first zone located in a central portion of the ophthalmic lens such that the central axis intersects the center of the first zone and the progress zone is positioned about the periphery of the first zone.
Claim 4
Dependent Claim
14 words
The ophthalmic lens of claim 2, wherein the first zone has a spherical surface.
Claim 5
Dependent Claim
14 words
The ophthalmic lens of claim 2, wherein the first zone corrects for distance vision.
Claim 6
Dependent Claim
14 words
The ophthalmic lens of claim 2, wherein the first zone corrects for near vision.
Claim 7
Dependent Claim
19 words
The ophthalmic lens of claim 2, further comprising: a second zone positioned about the periphery of the progressive zone.
Claim 8
Dependent Claim
14 words
The ophthalmic lens of claim 6, wherein the second zone has a spherical surface.
Claim 9
Dependent Claim
22 words
The ophthalmic lens of claim 6, wherein the first zone corrects for distance vision, and the second zone corrects for near vision.
Claim 10
Dependent Claim
22 words
The ophthalmic lens of claim 6, wherein the first zone corrects for near vision, and the second zone corrects for distance vision.
Claim 11
Dependent Claim
38 words
The ophthalmic lens of claim 1, wherein the surface of revolution defined by rotating the portion of the spiral curve about the central axis of the ophthalmic lens is located on the posterior surface of the ophthalmic lens.
Claim 12
Dependent Claim
39 words
The ophthalmic lens of claim 1, wherein the surface of revolution of the progressive zone has a predetermined asphericity which is determined based upon correction and fitting requirements of an individual for whom the ophthalmic lens is specifically designed.
Claim 13
Dependent Claim
23 words
The ophthalmic lens of claim 1, wherein the starting point of the spiral curve lies on the central axis of the ophthalmic lens.
Claim 14
Dependent Claim
42 words
An ophthalmic lens comprising: a progressive zone having an aspheric surface of a predetermined asphericity which is determined based upon correction and fitting requirements of an individual for whom the ophthalmic lens is specifically designed such that the lens is not Add-limited.
Claim 15
Dependent Claim
42 words
An ophthalmic lens comprising: a progressive zone having an aspheric surface of a predetermined asphericity which is determined based upon correction and fitting requirements of an individual for whom the ophthalmic lens is specifically designed such that the lens is not Add-limited.
Claim 16
Dependent Claim
71 words
The ophthalmic lens of claim 13, further comprising: a first zone located in a central portion of the ophthalmic lens such that the central axis intersects the center of the first zone and the progress zone is positioned about the periphery of the first zone, the first zone having a spherical surface; and a second zone positioned about the periphery of the progressive zone, the second zone having a spherical surface.
Claim 17
Dependent Claim
22 words
The ophthalmic lens of claim 14, wherein the first zone corrects for distance vision, and the second zone corrects for near vision.
Claim 18
Dependent Claim
22 words
The ophthalmic lens of claim 14, wherein the first zone corrects for near vision, and the second zone corrects for distance vision.
Claim 19
Dependent Claim
20 words
The ophthalmic lens of claim 13, wherein the aspheric surface is located on the posterior surface of the ophthalmic lens.
Claim 20
Dependent Claim
28 words
The ophthalmic lens of claim 13, wherein the aspheric surface is defined by rotating a portion of a spiral curve about a central axis of the ophthalmic lens.
Claim 21
Dependent Claim
28 words
The ophthalmic lens of claim 13, wherein the aspheric surface is defined by rotating a series of conic sectional curves about a central axis of the ophthalmic lens.
Claim 22
Dependent Claim
17 words
The ophthalmic lens of claim 19, wherein the series of conic sectional curves approximate a spiral curve.
Claim 23
Dependent Claim
101 words
A contact lens comprising: a first zone located in a central portion of the contact lens such that a central axis intersects the center of the first zone, the first zone having a spherical posterior surface for correcting distance vision; a second zone, positioned about the periphery of the first zone, the second zone having a posterior surface of revolution defined by rotating a portion of a spiral curve about a central axis of the contact lens; and a third zone positioned about the periphery of the second zone, the third zone having a spherical posterior surface for correcting near vision.
Claim 24
Dependent Claim
101 words
A contact lens comprising: a first zone located in a central portion of the contact lens such that a central axis intersects the center of the first zone, the first zone having a spherical posterior surface for correcting distance vision; a second zone, positioned about the periphery of the first zone, the second zone having a posterior surface of revolution defined by rotating a portion of a spiral curve about a central axis of the contact lens; and a third zone positioned about the periphery of the second zone, the third zone having a spherical posterior surface for correcting near vision.
Claim 25
Dependent Claim
39 words
The contact lens of claim 21, wherein the surface of revolution of the second zone has a predetermined asphericity which is determined based upon correction and fitting requirements of an individual for whom the contact lens is specifically designed.
Claim 26
Dependent Claim
40 words
An ophthalmic lens comprising: a progressive zone having a surface of revolution defined by rotating a portion of a spiral curve about a central axis of the ophthalmic lens, said progressive zone correcting both for near vision and distance vision.
Claim 27
Dependent Claim
40 words
An ophthalmic lens comprising: a progressive zone having a surface of revolution defined by rotating a portion of a spiral curve about a central axis of the ophthalmic lens, said progressive zone correcting both for near vision and distance vision.
Claim 28
Dependent Claim
53 words
An ophthalmic lens comprising: a progressive zone having an aspheric surface of a predetermined asphericity which is determined based upon correction and fitting requirements of an individual for whom the ophthalmic lens is specifically designed such that the lens is not Add-limited, the progressive zone correcting both for near vision and distance vision.
Claim 29
Dependent Claim
53 words
An ophthalmic lens comprising: a progressive zone having an aspheric surface of a predetermined asphericity which is determined based upon correction and fitting requirements of an individual for whom the ophthalmic lens is specifically designed such that the lens is not Add-limited, the progressive zone correcting both for near vision and distance vision.
Claim 30
Dependent Claim
55 words
An ophthalmic lens, comprising: a progressive zone having an aspheric surface of a predetermined asphericity which is determined based upon correction and fitting requirements of an individual for whom the ophthalmic lens is specifically designed, the aspheric surface defined by rotating a portion of a spiral curve about a central axis of the ophthalmic lens.
Claim 31
Dependent Claim
55 words
An ophthalmic lens, comprising: a progressive zone having an aspheric surface of a predetermined asphericity which is determined based upon correction and fitting requirements of an individual for whom the ophthalmic lens is specifically designed, the aspheric surface defined by rotating a portion of a spiral curve about a central axis of the ophthalmic lens.
Claim 32
Dependent Claim
60 words
An ophthalmic lens, comprising: a progressive zone having an aspheric surface of a predetermined asphericity which is determined based upon correction and fitting requirements of an individual for whom the ophthalmic lens is specifically designed, the aspheric surface defined by a spiral curve approximated by rotating a series of conic sectional curves about a central axis of the opthalmic lens.
Claim 33
Dependent Claim
60 words
An ophthalmic lens, comprising: a progressive zone having an aspheric surface of a predetermined asphericity which is determined based upon correction and fitting requirements of an individual for whom the ophthalmic lens is specifically designed, the aspheric surface defined by a spiral curve approximated by rotating a series of conic sectional curves about a central axis of the opthalmic lens.
Claim 34
Dependent Claim
61 words
An ophthalmic lens, comprising: a progressive zone having an aspheric surface of a predetermined asphericity which is determined based upon correction and fitting requirements of an individual for whom the ophthalmic lens is specifically designed, the aspheric surface defined by a spiral curve approximated by calculating a saggital depth of the lens at a number of points in the progressive zone.
Claim 35
Dependent Claim
61 words
An ophthalmic lens, comprising: a progressive zone having an aspheric surface of a predetermined asphericity which is determined based upon correction and fitting requirements of an individual for whom the ophthalmic lens is specifically designed, the aspheric surface defined by a spiral curve approximated by calculating a saggital depth of the lens at a number of points in the progressive zone.
Claim 36
Dependent Claim
20 words
The ophthalmic lens of claims 1, 13, 25, 26, 27, 28 or 27, wherein the lens is a contact lens.
Claim 37
Dependent Claim
20 words
The ophthalmic lens of claims 1, 13, 25, 26, 27, 28 or 27, wherein the lens is a spectacle lens.
Claim 38
Dependent Claim
20 words
The ophthalmic lens of claims 1, 13, 25, 26, 27, 28 or 27, wherein the lens includes ultraviolet blocking additives.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-05-14 | 1999-11-13 | 2000-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-05-14 | 2003-11-13 | 2004-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-05-14 | 2007-11-13 | 2008-05-14 | $7700.00 | Window Closed / Lapsed |