US5172143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Artificial optical lens and method of manufacturing it
Assignee: EssilorLuxottica SA
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Filing: 1991-01-15
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Granted: 1992-12-15
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Expires: 2011-01-15
Abstract
Abstract The manufacture of an artificial optical lens having any given power profile starts from an artificial optical lens having a different power profile. A physical-chemical treatment method modifies the power profile to obtain a required power profile. A rotating mask is used for spatial modulation of the energy flux.
Inventors
- 👤 Dominique Baude
- 👤 Jean-Claude Meslard
- 👤 Gerard Obrecht
- 👤 Pierre Chavel
- 👤 Denis Joyeux
- 👤 Jean Taboury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:03
CPC Classifications
B; B29; B29D; B29D11/00; B29D11/00009; B29D11/00432; B29D11/00461; A; A61; A61F; A61F2/00; A61F2/02; A61F2/14; A61F2/16; A61F2/1613; B29D11/00442; G; G02; G02C; G02C7/00; G02C7/02; G02C7/04; B29L; B29L2011/00; B29L2011/0016; B29L2011/0041
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
113 words
Method of manufacturing an artificial lens having a desired variable power profile comprising the steps of: (a) providing an artificial optical lens blank having an initial power profile; (b) providing a rotating mask having opaque and transparent zones mutually delimiting one another along a curved line of demarcation extending outwardly from a central zone toward a peripheral zone of the mask; (c) subjecting the artificial optical lens blank to a physical-chemical treatment employing an energy flux for modifying the initial power profile to the desired variable power profile; (d) rotating the mask relative to the artificial lens blank during the physical-chemical treatment of step (c) for effecting spatial modulation of the energy flux.
Claim 2
Dependent Claim
113 words
Method of manufacturing an artificial lens having a desired variable power profile comprising the steps of: (a) providing an artificial optical lens blank having an initial power profile; (b) providing a rotating mask having opaque and transparent zones mutually delimiting one another along a curved line of demarcation extending outwardly from a central zone toward a peripheral zone of the mask; (c) subjecting the artificial optical lens blank to a physical-chemical treatment employing an energy flux for modifying the initial power profile to the desired variable power profile; (d) rotating the mask relative to the artificial lens blank during the physical-chemical treatment of step (c) for effecting spatial modulation of the energy flux.
Claim 3
Dependent Claim
17 words
Method according to claim 1 wherein the initial artificial optical lens blank is a spherical lens blank.
Claim 4
Dependent Claim
17 words
Method according to claim 2 wherein the initial artificial optical lens blank is a spherical-toroidal lens blank.
Claim 5
Dependent Claim
31 words
Method according to claim 1 wherein the modification of the power profile is in accordance with a phase law, the phase law being reduced to maintain the phase excursion below 2π.
Claim 6
Dependent Claim
25 words
Method according to claim 4 wherein the energy flux is modulated in accordance with a phase law, the phase law being reduced a modulo 2π.
Claim 7
Dependent Claim
32 words
Method according to claim 1 wherein the modulation of the physical-chemical treatment consists of modulating a characteristic, wherein the characteristic is selected from the group consisting of refractive index and lens thickness.
Claim 8
Dependent Claim
13 words
Method according to claim 1 wherein the physical-chemical treatment is a photochemical method.
Claim 9
Dependent Claim
37 words
Method according to claim 1 wherein the desired power profile is astigmatic, and comprising varying the rotational speed of the mask in accordance with the angular position of the artificial optical lens blank relative to the mask.
Claim 10
Dependent Claim
50 words
Method according to claim 8 wherein the rotational speed (v) is varied according to the following equation: ##EQU12## in which θ is the angular position between the rotating mask and the artificial optical lens blank, and Px and Py are the powers to be obtained along two mutually perpendicular axes.
Claim 11
Dependent Claim
42 words
Method according to claim 1 wherein the mask rotates about a center of rotation, and the transparent and the opaque zones are further delimited by a straight line intersecting the curved line which passes through the center of rotation of the mask.
Claim 12
Dependent Claim
13 words
Method according to claim 10 wherein the curved line is a conical section.
Claim 13
Dependent Claim
161 words
Method of manufacturing an artificial lens having a desired astigmatic power profile comprising the steps of: (a) providing an artificial optical lens blank having an initial power profile; (b) providing a rotating mask having opaque and transparent zones mutually delimiting one another along a curved line of demarcation extending outwardly from a central zone toward a peripheral zone of the mask; (c) subjecting the artificial optical lens blank to a physical-chemical treatment, the treatment including modulating a characteristic, wherein the characteristic is selected from the group consisting of refractive index and lens thickness; (d) employing an energy flux for modifying the initial power profile to the desired variable power profile including; (e) rotating the mask relative to the artificial lens blank during the physical-chemical treatment of step (c) for effecting spatial modulation of the energy flux; and (f) varying the rotational speed of the mask in accordance with the angular position of the artificial optical lens blank relative to the mask.
Claim 14
Dependent Claim
161 words
Method of manufacturing an artificial lens having a desired astigmatic power profile comprising the steps of: (a) providing an artificial optical lens blank having an initial power profile; (b) providing a rotating mask having opaque and transparent zones mutually delimiting one another along a curved line of demarcation extending outwardly from a central zone toward a peripheral zone of the mask; (c) subjecting the artificial optical lens blank to a physical-chemical treatment, the treatment including modulating a characteristic, wherein the characteristic is selected from the group consisting of refractive index and lens thickness; (d) employing an energy flux for modifying the initial power profile to the desired variable power profile including; (e) rotating the mask relative to the artificial lens blank during the physical-chemical treatment of step (c) for effecting spatial modulation of the energy flux; and (f) varying the rotational speed of the mask in accordance with the angular position of the artificial optical lens blank relative to the mask.
Claim 15
Dependent Claim
111 words
Method of manufacturing an artificial lens having a desired power profile comprising the steps of: (a) providing an artificial optical lens blank having an initial power profile; (b) providing a mask having opaque and transparent zone; (c) subjecting the initial artificial optical lens to a physical-chemical treatment employing an energy flux for modifying the initial power profile to the desired power profile; (d) rotating the mask relative to the artificial lens blank during the physical-chemical treatment of step (c) for effecting spatial modulation of the energy flux; and (e) modifying the power profile in accordance with a phase law, the phase law being reduced to maintain the phase excursion below 2π.
Claim 16
Dependent Claim
111 words
Method of manufacturing an artificial lens having a desired power profile comprising the steps of: (a) providing an artificial optical lens blank having an initial power profile; (b) providing a mask having opaque and transparent zone; (c) subjecting the initial artificial optical lens to a physical-chemical treatment employing an energy flux for modifying the initial power profile to the desired power profile; (d) rotating the mask relative to the artificial lens blank during the physical-chemical treatment of step (c) for effecting spatial modulation of the energy flux; and (e) modifying the power profile in accordance with a phase law, the phase law being reduced to maintain the phase excursion below 2π.
Claim 17
Dependent Claim
115 words
Method of manufacturing an artificial lens having a desired variable power profile comprising the steps of: (a) providing an artificial optical lens blank having an initial power profile; (b) providing a mask having opaque and transparent zone; (c) subjecting the artificial optical lens blank to a physical-chemical treatment employing an energy flux for modifying the initial power profile to the desired variable power profile; and (d) rotating the mask relative to the artificial lens blank during the physical-chemical treatment of step (c) for effecting spatial modulation of the energy flux, modulation of the physical-chemical treatment consisting of modulating a characteristic, wherein the characteristic is selected from the group consisting of refractive index and lens thickness.
Claim 18
Dependent Claim
115 words
Method of manufacturing an artificial lens having a desired variable power profile comprising the steps of: (a) providing an artificial optical lens blank having an initial power profile; (b) providing a mask having opaque and transparent zone; (c) subjecting the artificial optical lens blank to a physical-chemical treatment employing an energy flux for modifying the initial power profile to the desired variable power profile; and (d) rotating the mask relative to the artificial lens blank during the physical-chemical treatment of step (c) for effecting spatial modulation of the energy flux, modulation of the physical-chemical treatment consisting of modulating a characteristic, wherein the characteristic is selected from the group consisting of refractive index and lens thickness.
Claim 19
Dependent Claim
115 words
Method of manufacturing an artificial lens having a desired astigmatic power profile comprising the steps of: (a) providing an artificial optical lens blank having an initial power profile; (b) providing a rotating mask having opaque and transparent zone; (c) subjecting the artificial optical lens blank to a physical-chemical treatment employing an energy flux for modifying the initial power profile to the desired variable power profile; (d) rotating the mask relative to the artificial lens blank during the physical-chemical treatment of step (c) for effecting spatial modulation of the energy flux; and (e) varying the rotational speed of the mask in accordance with the angular position of the artificial optical lens blank relative to the mask.
Claim 20
Dependent Claim
115 words
Method of manufacturing an artificial lens having a desired astigmatic power profile comprising the steps of: (a) providing an artificial optical lens blank having an initial power profile; (b) providing a rotating mask having opaque and transparent zone; (c) subjecting the artificial optical lens blank to a physical-chemical treatment employing an energy flux for modifying the initial power profile to the desired variable power profile; (d) rotating the mask relative to the artificial lens blank during the physical-chemical treatment of step (c) for effecting spatial modulation of the energy flux; and (e) varying the rotational speed of the mask in accordance with the angular position of the artificial optical lens blank relative to the mask.
Claim 21
Dependent Claim
109 words
Artificial optical lens manufactured according to a method in which there is provided an artificial optical lens blank having an initial power profile, a mask rotatable relative to the optical lens blank having opaque and transparent zones mutually delimiting one another along a curved line of demarcation extending outwardly from central zone towards a peripheral zone of the mask, and the artificial optical lens blank is subjected to a physical-chemical treatment employing an energy flux for modifying the initial power profile to the desired variable power profile, and the mask is rotated relative to the artificial lens blank during the physical-chemical treatment for effecting spatial modulation of energy flux.
Claim 22
Dependent Claim
109 words
Artificial optical lens manufactured according to a method in which there is provided an artificial optical lens blank having an initial power profile, a mask rotatable relative to the optical lens blank having opaque and transparent zones mutually delimiting one another along a curved line of demarcation extending outwardly from central zone towards a peripheral zone of the mask, and the artificial optical lens blank is subjected to a physical-chemical treatment employing an energy flux for modifying the initial power profile to the desired variable power profile, and the mask is rotated relative to the artificial lens blank during the physical-chemical treatment for effecting spatial modulation of energy flux.
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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) | 1995-12-15 | 1996-06-15 | 1996-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-15 | 2000-06-15 | 2000-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-15 | 2004-06-15 | 2004-12-15 | $7700.00 | Window Closed / Lapsed |