Patent US5114220A successfully refreshed from Google Patents.
US5114220A
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US
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Multiple contour diffractive lens
Assignee: EssilorLuxottica SA
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Filing: 1989-05-15
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Granted: 1992-05-19
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Expires: 2009-05-15
Abstract
Abstract Disclosed is an ophthalmic lens which characteristically comprises at least two concentric regions having diffractive components with different phase profiles in order to use different orders of diffraction. The diffractive components may be formed by holograms in relief or index holograms.
Inventors
- 👤 Dominique Baude
- 👤 Pierre Chavel
- 👤 Denis Joyeux
- 👤 Jean Taboury
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:35
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/18; G02B5/1876; G02B5/189; G02B5/1895; G02C; G02C7/00; G02C7/02; G02C7/04; G02C7/041; G02C7/042; G02C7/044; G02C7/06; G02C2202/00; G02C2202/20
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
110 words
An opthalmic lens comprising at least two concentric regions having diffractive components with different phase contours in order to use different orders of diffraction, wherein the diffractive components are formed by annular and concentric structures in relief on one of the faces of the lens, the contour of the various structures in relief being identical for a considered region, but different from one region to another, and the external radius of the structures in relief, considered with respect to the optical axis of the lens, corresponds to a geometrical progression of the type √Kr 1 where k designates whole numbers and r1 designates the external radius of the central structure.
Claim 2
Dependent Claim
110 words
An opthalmic lens comprising at least two concentric regions having diffractive components with different phase contours in order to use different orders of diffraction, wherein the diffractive components are formed by annular and concentric structures in relief on one of the faces of the lens, the contour of the various structures in relief being identical for a considered region, but different from one region to another, and the external radius of the structures in relief, considered with respect to the optical axis of the lens, corresponds to a geometrical progression of the type √Kr 1 where k designates whole numbers and r1 designates the external radius of the central structure.
Claim 3
Dependent Claim
29 words
A lens according to claim 1 wherein the lens has two main surfaces having different radii of curvature, in which the difference between said radii form a refractive component.
Claim 4
Dependent Claim
21 words
A lens according to claim 2, wherein the refractive component possesses a refractive power identical throughout the extent of the lens.
Claim 5
Dependent Claim
32 words
A lens according to claim 2, wherein the refractive component has at least two different refraction power values, respectively facing the concentric regions of the diffractive components having a same phase contour.
Claim 6
Dependent Claim
29 words
A lens according to claim 2, wherein the refractive component has at least two different refraction power values, facing a region of diffractive components having a same phase contour.
Claim 7
Dependent Claim
36 words
A lens according to claim 1, wherein the concentric regions of diffractive components having different phase contours are adapted to working, respectively, one in the n=+1 order and the other in the n=+1 and n=-1 orders.
Claim 8
Dependent Claim
40 words
A lens according to claim 1, wherein the concentric regions of diffractive components having different phase contours, are respectively formed, one by a stepped kinoform lens with M levels phase-shifted by 2π/M with M>2 the other with crenels in π.
Claim 9
Dependent Claim
17 words
A lens according to claim 1, formed by an intra-ocular implant designed to replace the crystalline lens.
Claim 10
Dependent Claim
29 words
A lens according to claim 1, formed by a contact lens designated to be placed on the cornea of the eye to assist the crystalline lens in close vision.
Claim 11
Dependent Claim
64 words
An opthalmic lens comprising at least two concentric regions having diffractive components with different phase contours in order to use different orders of diffraction wherein the diffractive components are formed by concentric rings having a variation in index in the radial direction, the index contour of the various concentric, annular zones being identical for a considered region, but different from one region to another.
Claim 12
Dependent Claim
64 words
An opthalmic lens comprising at least two concentric regions having diffractive components with different phase contours in order to use different orders of diffraction wherein the diffractive components are formed by concentric rings having a variation in index in the radial direction, the index contour of the various concentric, annular zones being identical for a considered region, but different from one region to another.
Claim 13
Dependent Claim
49 words
A lens according to claim 10, wherein the external radius of the concentric, annular structures, considered with respect to the optical axis of the lens, corresponds to a geometrical progression of the type √Kr1 where K designates whole numbers and r1 designates the external radius of the central structure.
Claim 14
Dependent Claim
29 words
A lens according to claim 10, wherein said lens has two main surfaces having different radii of curvature in which the difference between said radii form a refractive component.
Claim 15
Dependent Claim
21 words
A lens according to claim 12, wherein the refractive component possesses a refractive power identical throughout the extent of the lens.
Claim 16
Dependent Claim
32 words
A lens according to claim 12, wherein the refractive component has at least two different refraction power values, respectively facing the concentric regions of the diffractive components having a same phase contour.
Claim 17
Dependent Claim
29 words
A lens according to claim 12, wherein the refractive component has at least two different refraction power values, facing a region of diffractive components having a same phase contour.
Claim 18
Dependent Claim
36 words
A lens according to claim 10, wherein the concentric regions of diffractive components having different phase contours are adapted to working, respectively, one in the n=+1 order and the other in the n=+1 and n=-1 orders.
Claim 19
Dependent Claim
17 words
A lens according to claim 10, formed by an intraocular implant designed to replace the crystalline lens.
Claim 20
Dependent Claim
29 words
A lens according to claim 10, formed by a contact lens designed to be placed on the cornea of the eye to assist the crystalline lens in close vision.
Claim 21
Dependent Claim
53 words
Opthalmic lens comprising at least two concentric regions having diffractive components with different phase contours in order to use different orders of diffraction, wherein the concentric regions of diffractive components having different phase contours are adapted to working, respectively, one in the n=+1 order and the other in the n=+1 and n=-1 order.
Claim 22
Dependent Claim
53 words
Opthalmic lens comprising at least two concentric regions having diffractive components with different phase contours in order to use different orders of diffraction, wherein the concentric regions of diffractive components having different phase contours are adapted to working, respectively, one in the n=+1 order and the other in the n=+1 and n=-1 order.
Claim 23
Dependent Claim
92 words
A lens according to claim 19, wherein the diffractive components are formed by annular and concentric structures in relief on one of the faces of the lens, the contour of the various structures in relief being identical for a considered region, but different from one region to another, and wherein the external radius of the structures in relief, considered with respect to the optical axis of the lens, corresponds to a geometrical progression of the type √Kr1 where K designates whole numbers and r1 designates the external radius of the central structure.
Claim 24
Dependent Claim
90 words
A lens according to claim 19, wherein the diffractive components are formed by concentric rings having a variation in index in the radial direction, the index contour of the various concentric, annular zones being identical for a considered region, but different from one region to another, and wherein the external radius of the concentric, annular structures, considered with respect to the optical axis of the lens, corresponds to a geometrical progression of the type √Kr1 where K designates hole numbers and r1 designates the external radius of the central structure.
Claim 25
Dependent Claim
34 words
A lens according to claim 19 wherein the lens has two main surfaces having different radii of curvature in which the difference between said radii of curvature form a refractive component for said lens.
Claim 26
Dependent Claim
21 words
A lens according to claim 22, wherein the refractive component possesses a refractive power identical throughout the extent of the lens.
Claim 27
Dependent Claim
32 words
A lens according to claim 22, wherein the refractive component has at least two different refraction power values, respectively facing the concentric regions of the diffractive components having a same phase contour.
Claim 28
Dependent Claim
29 words
A lens according to claim 22, wherein the refractive component has at least two different refraction power values, facing a region of diffractive components having a same phase contour.
Claim 29
Dependent Claim
40 words
A lens according to claim 19, wherein the concentric regions of diffractive components having different phase contours, are respectively formed, one by a stepped kinoform lens with M levels phase-shifted by 2π/M with M>2, the other with crenels in π.
Claim 30
Dependent Claim
17 words
A lens according to claim 19, formed by an intraocular implant designated to replace the crystalline lens.
Claim 31
Dependent Claim
29 words
A lens according to claim 19, formed by a contact lens designed to be placed on the cornea of the eye to assist the crystalline lens in close vision.
Claim 32
Dependent Claim
56 words
Opthalmic lens comprising at least two concentric regions having diffractive components with different phase contours in order to use different orders of diffraction, wherein the concentric regions of diffractive components having different phase contours, are respectively formed, one by a stepped kinoform lens with M levels phase-shifted by 2π/M with M>2, the other with crenels π.
Claim 33
Dependent Claim
56 words
Opthalmic lens comprising at least two concentric regions having diffractive components with different phase contours in order to use different orders of diffraction, wherein the concentric regions of diffractive components having different phase contours, are respectively formed, one by a stepped kinoform lens with M levels phase-shifted by 2π/M with M>2, the other with crenels π.
Claim 34
Dependent Claim
91 words
A lens according to claim 29, wherein the diffractive components are formed by annular and concentric structures in relief, on one of the faces of the lens, the contour of the various structures in relief being identical for a considered region, but different from one region to another, wherein the external radius of the structure in relief, considered with respect to the optical axis of the lens, corresponds to a geometrical progression of the type √Kr1 where K designates whole numbers and r1 designates the external radius of the central structure.
Claim 35
Dependent Claim
31 words
A lens according to claim 29 wherein the lens has two main surfaces having different radii of curvature in which the difference between said radii of curvature form a refractive component.
Claim 36
Dependent Claim
21 words
A lens according to claim 31, wherein the refractive component possesses a refractive power identical throughout the extent of the lens.
Claim 37
Dependent Claim
32 words
A lens according to claim 31, wherein the refractive component has at least two different refraction power values, respectively facing the concentric regions of the diffractive components having a same phase contour.
Claim 38
Dependent Claim
29 words
A lens according to claim 31, wherein the refractive component has at least two different refraction power values, facing a region of diffractive components having a same phase contour.
Claim 39
Dependent Claim
36 words
A lens according to claim 29, wherein the concentric regions of diffractive components having different phase contours are adapted to working, respectively, one in the n=+1 order and the other in the n=+1 and n=-1 orders.
Claim 40
Dependent Claim
17 words
A lens according to claim 29, formed by an intraocular implant designated to replace the crystalline lens.
Claim 41
Dependent Claim
29 words
A lens according to claim 29, formed by a contact lens designed to be placed on the corner of the eye to assist the crystalline lens in close vision.
References Cited (Backward Citations)
US4210391A
Cited
US4637697A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-05-19 | 1995-11-18 | 1996-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-19 | 1999-11-18 | 2000-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-19 | 2003-11-18 | 2004-05-19 | $7700.00 | Window Closed / Lapsed |