US5260727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wide depth of focus intraocular and contact lenses
Assignee: Individual
•
Filing: 1990-10-22
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Granted: 1993-11-09
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Expires: 2010-10-22
Abstract
Abstract A lens and method of fabrication thereof for increasing depth of focus where the lens power can be a constant but the amplitude and phase of the wave across the pupillary aperture are variables. The lens can be constructed by shading regions thereof in accordance with a mathematical function, e.g., a Gaussian distribution or Bessel function over a predetermined geometry, such as e.g., concentric, parallel or radial. The lens may be of single power or multiple power, e.g., of the bi-focal type.
Inventors
- 👤 Henry C. Oksman
- 👤 Joseph Eisner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:16
CPC Classifications
G; G02; G02C; G02C7/00; G02C7/02; G02C7/024; G02C7/028; A; A61; A61F; A61F2/00; A61F2/02; A61F2/14; A61F2/16; A61F2/1613; G02C7/04; G02C7/041; G02C7/10; G02C7/102; G02C7/104; G02C7/105; G02C7/16; A61F2002/16965; A61F2002/1699; A61F2250/00; A61F2250/0058; A61F2250/0096; A61F2250/0098
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
66 words
A lens adapted to be worn on, or implanted in, the eye comprising a substrate having a surface with a plurality of regions of at least partial transparency, at least one of said regions having a degree of transparency greater than another of said regions more distant from the center of said lens than said one region for enabling viewing with an extended depth of focus.
Claim 2
Dependent Claim
66 words
A lens adapted to be worn on, or implanted in, the eye comprising a substrate having a surface with a plurality of regions of at least partial transparency, at least one of said regions having a degree of transparency greater than another of said regions more distant from the center of said lens than said one region for enabling viewing with an extended depth of focus.
Claim 3
Dependent Claim
15 words
A lens according to claim 1 wherein said first and second regions are concentrically displaced.
Claim 4
Dependent Claim
16 words
A lens according to claim 1 wherein said first and second regions are in parallel disposition.
Claim 5
Dependent Claim
15 words
A lens according to claim 1 wherein said first and second regions are radially displaced.
Claim 6
Dependent Claim
15 words
A lens according to claim 1 wherein said first and second regions are angularly displaced.
Claim 7
Dependent Claim
24 words
A lens according to claim 1 wherein the transparency of said regions varies as a mathematical function of their distance from a predetermined origin.
Claim 8
Dependent Claim
14 words
A lens according to claim 6 where said mathematical function is a Gaussian distribution.
Claim 9
Dependent Claim
14 words
A lens according to claim 6 where said mathematical function is a Bessel function.
Claim 10
Dependent Claim
24 words
A lens according to claim 1 wherein said substrate comprises a tint applied to at least one of said regions to attenuate its transparency.
Claim 11
Dependent Claim
23 words
A lens according to claim 9 wherein the transparency of said tint is variable as a function of the light incident upon it.
Claim 12
Dependent Claim
31 words
A lens according to claim 1 wherein said substrate is contoured so that at least one of said regions has diopter power the absolute value of which is greater than zero.
Claim 13
Independent Claim
62 words
A method of increasing depth of focus for a lens adapted to be worn on, or implanted in, the eye comprising rendering the transparency of at least one of a plurality of regions of at least partial transparency of said lens greater than the transparency of another of said regions more distant from the center of said lens than said one region.
Claim 14
Independent Claim
62 words
A method of increasing depth of focus for a lens adapted to be worn on, or implanted in, the eye comprising rendering the transparency of at least one of a plurality of regions of at least partial transparency of said lens greater than the transparency of another of said regions more distant from the center of said lens than said one region.
Claim 15
Dependent Claim
24 words
A method of increasing depth of focus for a lens according to claim 12 wherein the transparencies of concentrically displaced regions are rendered different.
Claim 16
Dependent Claim
24 words
A method of increasing depth of focus for a lens according to claim 12 wherein the transparencies of parallel displaced regions are rendered different.
Claim 17
Dependent Claim
24 words
A method of increasing depth of focus for a lens according to claim 12 wherein the transparencies of radially displaced regions are rendered different.
Claim 18
Dependent Claim
36 words
A method of increasing depth of focus for a lens according to claim 12 wherein the relative transparencies of said regions are rendered to vary as a mathematical function of their distance from a predetermined origin.
Claim 19
Dependent Claim
22 words
A method of increasing depth of focus for a lens according to claim 16 wherein said mathematical function is a Gaussian distribution.
Claim 20
Dependent Claim
22 words
A method of increasing depth of focus for a lens according to claim 16 wherein said mathematical function is a Bessel function.
Claim 21
Dependent Claim
28 words
A method of increasing depth of focus for a lens according to claim 12 further comprising tinting said one region to a different transparency than said another region.
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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) | 1996-11-08 | 1997-05-10 | 1997-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-08 | 2001-05-10 | 2001-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-08 | 2005-05-10 | 2005-11-09 | $7700.00 | Window Closed / Lapsed |