Patent US5170191A successfully refreshed from Google Patents.
US5170191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Target domain profiling of target optical surfaces using excimer laser photoablation
Assignee: Bausch and Lomb Inc
•
Filing: 1991-10-23
•
Granted: 1992-12-08
•
Expires: 2011-10-23
Abstract
Abstract A method for inducing cylinder power into an optical surface which comprises the steps of providing a target optical surface to an apparatus capable of indexing the position of said target to the beam path of a laser capable of photoablating the material of said target, passing said target through the domain of said laser along at least one axis and controlling the product of the intensity of said laser with time in order to control the amount of ablation of said target along at least one axis of said target.
Inventors
- 👤 William F. Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:26
CPC Classifications
A; A61; A61F; A61F9/00; A61F9/007; A61F9/008; A61F9/00825; A61F9/00827; A61F9/00834; A61F2009/00861; A61F2009/0087; A61F2009/00872; A61F2009/00897; B; B23; B23K; B23K2103/00; B23K2103/30; B23K2103/42; B23K2103/50
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
46 words
A modified optical surface produced by controllably sweeping the domain of an optical target surface along an axis according to a predetermined sweep velocity profile with a high energy beam in such a fashion as to selectively ablate material in a predetermined fashion along said axis.
Claim 2
Dependent Claim
46 words
A modified optical surface produced by controllably sweeping the domain of an optical target surface along an axis according to a predetermined sweep velocity profile with a high energy beam in such a fashion as to selectively ablate material in a predetermined fashion along said axis.
Claim 3
Dependent Claim
72 words
The optical target surface of claim 1 wherein said sweep velocity profile is defined by the general formula V=A//Y.sub.o.sup.2 where V is the instantaneous velocity of the beam as it is scanned, A is an ablation constant, and Y o is the distance of the beam from the axis of symmetry of the induced cylinder in the target, where such ablation causes a cylindrical component to be induced into the target surface.
Claim 4
Dependent Claim
73 words
A modified optical surface produced by changing the curvature of radius of said optical target surface by a) controllably sweeping the domain of said optical surface along an axis X according to a predetermined sweep velocity profile with high energy beam in such a fashion as to selectively ablate material in a predetermined fashion along said axis X and b) repeating a) along an axis perpendicular to said axis X used in a).
Claim 5
Dependent Claim
73 words
A modified optical surface produced by changing the curvature of radius of said optical target surface by a) controllably sweeping the domain of said optical surface along an axis X according to a predetermined sweep velocity profile with high energy beam in such a fashion as to selectively ablate material in a predetermined fashion along said axis X and b) repeating a) along an axis perpendicular to said axis X used in a).
Claim 6
Dependent Claim
23 words
The optical target surface of claim 1 wherein said sweep velocity profile is chosen so as to add prism to said optical surface.
Claim 7
Dependent Claim
23 words
The optical target surface of claim 1 wherein said sweep velocity profile is defined so as to remove prism from said optical surface.
Claim 8
Dependent Claim
23 words
The optical target surface of claim 1 wherein said optical target surface is modified from an initially spherical surface to a toric surface.
Claim 9
Dependent Claim
15 words
The optical target surface of claim 1 wherein said optical surface is an intraocular lens.
Claim 10
Dependent Claim
14 words
The optical target surface of claim 1 wherein said optical surface is a cornea.
Claim 11
Dependent Claim
45 words
A contact lens modified by controllably sweeping the domain of an optical target surface along an axis according to a predetermined sweep velocity profile with a high energy beam in such a fashion as to selectively ablate material in a predetermined fashion along said axis.
Claim 12
Dependent Claim
45 words
A contact lens modified by controllably sweeping the domain of an optical target surface along an axis according to a predetermined sweep velocity profile with a high energy beam in such a fashion as to selectively ablate material in a predetermined fashion along said axis.
References Cited (Backward Citations)
US4194814A
Cited
US4219721A
Cited
US4307046A
Cited
US4563565A
Cited
US4744647A
Cited
US4642439A
Cited
US4838266A
Cited
EP0264255A1
Cited
US5053171A
Cited
AU1614588A
Cited
EP0366356A2
Cited
US4909818A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-12-08 | 1996-06-08 | 1996-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-08 | 2000-06-08 | 2000-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-08 | 2004-06-08 | 2004-12-08 | $7700.00 | Window Closed / Lapsed |