HU0100523A2 - Holographic lens - Google Patents

Holographic lens Download PDF

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Publication number
HU0100523A2
HU0100523A2 HU0100523A HU0100523A HU0100523A2 HU 0100523 A2 HU0100523 A2 HU 0100523A2 HU 0100523 A HU0100523 A HU 0100523A HU 0100523 A HU0100523 A HU 0100523A HU 0100523 A2 HU0100523 A2 HU 0100523A2
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HU
Hungary
Prior art keywords
method
lens
electromagnetic waves
polymerizable
material
Prior art date
Application number
HU0100523A
Other languages
Hungarian (hu)
Inventor
Xiaoxiao Zhang
Original Assignee
Novartis Ag.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to US99902597A priority Critical
Application filed by Novartis Ag. filed Critical Novartis Ag.
Priority to PCT/EP1998/008463 priority patent/WO1999033642A1/en
Publication of HU0100523A2 publication Critical patent/HU0100523A2/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00Producing optical elements, e.g. lenses or prisms
    • B29D11/0074Production of other optical elements not provided for in B29D11/00009- B29D11/0073
    • B29D11/00769Producing diffraction gratings
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00Producing optical elements, e.g. lenses or prisms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00Producing optical elements, e.g. lenses or prisms
    • B29D11/00009Production of simple or compound lenses
    • B29D11/00038Production of contact lenses
    • B29D11/00125Auxiliary operations, e.g. removing oxygen from the mould, conveying moulds from a storage to the production line in an inert atmosphere
    • B29D11/00134Curing of the contact lens material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29DPRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00Producing optical elements, e.g. lenses or prisms
    • B29D11/00009Production of simple or compound lenses
    • B29D11/00432Auxiliary operations, e.g. machines for filling the moulds
    • B29D11/00442Curing the lens material
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
    • G02B5/00Optical elements other than lenses
    • G02B5/18Diffraction gratings
    • G02B5/1876Diffractive Fresnel lenses; Zone plates; Kinoforms
    • G02B5/189Structurally combined with optical elements not having diffractive power
    • G02B5/1895Structurally combined with optical elements not having diffractive power such optical elements having dioptric power
    • GPHYSICS
    • G02OPTICS
    • G02CSPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00Optical parts
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00Holographic processes or apparatus using light, infra-red or ultra-violet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/02Details of features involved during the holographic process; Replication of holograms without interference recording
    • G03H1/024Hologram nature or properties
    • G03H1/0248Volume holograms
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0838Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using laser
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00Holographic processes or apparatus using light, infra-red or ultra-violet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • G03H1/04Processes or apparatus for producing holograms
    • G03H1/0402Recording geometries or arrangements
    • G03H2001/043Non planar recording surface, e.g. curved surface
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2250/00Laminate comprising a hologram layer
    • G03H2250/37Enclosing the photosensitive material
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03HHOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H2260/00Recording materials or recording processes
    • G03H2260/12Photopolymer

Abstract

FIELD OF THE INVENTION The present invention relates to a method for the manufacture of corrective optical lenses and to a lens produced by the method. The process comprises the following steps: a) inserting an opolymerizable optical base material into the mold for the manufacture of the eyepiece, the use of a holographic storage material, and b) exposing the pressurizable base material or the holographic container to the material electromagnetic waves, wherein the electromagnetic waves form a pattern of interference strips while polymerizing the polymerizable material while the polymerizable material is polymerized; or exposed to a holographic storage medium. Then, the pattern is fixed in the lens, forming an extensive strip system, thereby forming an expanded colographic element, wherein the pattern diffracts the light entering said first curve to correct for ametropic states when the lens is placed in front of or in front of the lens. HE

Description

EXTRACT

Holographic eyepiece rf

The present invention relates to a method for manufacturing a correction optical lens.

ásához for the manufacture of the eyepiece, inserting the polymerizable optical base material into a mold, or using a holographic storage material, and b. expose the holographic storage material. Then, the pattern is fixed in the lens, forming an extensive strip system, thereby forming an extensive holographic element, wherein the pattern diffracts light entering said first curvature to correct ametropic states when the lens is placed in front of or in front of the lens.

Typical Figure 1

70.4587ΒΤΊ * 09.09.05 t

- - SBG & K.

g International

70.458 / BT Patent Office npTimno / AOizíO H-1062 Budapest. Andrassy út 113.

PCT / EP98 / 08463 Phone: 34 24-950, Fax: 34-24-323

Holographic eyepiece

Novartis AG, Basel, CH

The present invention relates to an eyepiece comprising a holographic element and a method of manufacturing an eyepiece.

Eyeglasses such as contact lenses and intraocular lenses (intraocular lenses) are widely available to improve ametropia and other unfavorable visual conditions by utilizing the refractive power of polymers of optical purity. The name ametropia refers to any condition of the eye's refractive vision weakness, such as myopia, hyperopia, prebyopia, and astigmatism. Because each ametropic condition requires special measurement, i.e. a special correction capability, a large number of different types of eyepieces are required to eliminate many different eye defects of the eye. For example, to align different levels of myopic states with contact lenses, a variety of simple-to-contact contact lenses are manufactured from 0 to -10 diopters or even lower in quarter diopter steps. The instantaneous approach to this balancing problem is the mass production of eyepieces for ordinary ameotropic states, and then the unique production of eyepieces for unusual ameotropic states. However, the instantaneous approach does not eliminate the need to design and manufacture a large number of eyepieces with different correction dimensions. In addition, the momentary approach by lens manufacturers and practitioners is eye70.458 / BT *! 00:09:05 *

It requires a large storehouse of units containing a set of lenses to eliminate various variations of the various ameotropic states.

Furthermore, the shape constraints of conventional refractive lenses, which rely on variations in lens thickness variations, do not allow the lens shape to be optimized solely for the wearer of the lens.

There is a need for corrective eyepieces that lack the disadvantages of the prior art eyepieces and can be manufactured by a simpler manufacturing process than the conventional eyepiece manufacturing process.

According to the present invention, there is provided a flexible method for producing optical lenses and, more preferably, eyepieces having a wide range of refractive abilities for adjusting a variety of ametropic conditions and manufacturing lenses by the method. The method for producing an ophthalmic lens for correcting the ophthalmic ophthalmic eye includes the steps of introducing the polymerizable optical substrate into the mold of the eyepiece, the irradiation of the polymerizable base material in the mold with electromagnetic waves, wherein the electromagnetic waves form the refractive index modulation pattern in the polymerizable material while polymerizing it where it polymerizes where the pattern changes the light entering the lens to correct ametropic states. As used herein, the term "optical lenses" refers to lenses and spectacle lenses unless otherwise indicated.

In addition, there is a method for producing an optical lens for correcting ametropic conditions, comprising the steps of exposing the holographic storage medium to electromagnetic waves, developing the holographic storage medium, and encapsulating the elaborated storage medium into a biocompatible optical material, wherein the electromagnetic waves are a residual. a refractive index modulation pattern. The pattern is designed to at least partially correct the ametropy by deflecting the light entering the lens. Thus, the optical lens is formed.

The lenses produced according to the methods of the present invention provide correctional abilities for a number of ametropic conditions, including myopy, hyperopia, prebyopia, and combinations thereof, and these lenses are mammalian or special 70.458 / BT * 2 * 00.09.05

it is designed for use on the surface, inside or before the human eye. Additionally, these lenses can be adjusted to provide a wide range of correction capabilities, such as between +10 and -20 dioptres, without changing lens dimensions such as thickness.

Figure 1 illustrates a correction lens for the present invention.

Figure 2 illustrates a method of manufacturing an extensive holographic optical element of the present invention.

3-3b. Figures 4 to 7 show a combination of the holographic optical element.

The present invention provides a method for manufacturing eyepieces and process lenses. The process is very flexible, resulting in a wide range of lenses having many different correction and combination of correction capabilities, and the process lenses are well suited for correcting a wide variety of ametropic conditions. For example, ametropic conditions such as myopia, hyperopia, prebyopia, regular and irregular astigmatism, and combinations thereof can be corrected. According to the present invention, the correction eyepiece is formed by adjusting the correction capability of the lens of the optical lens, not by changing the dimensions of the lens, although the dimensions of the lens can be changed to provide additional or additional capability. Unlike conventional correction eyepieces, the lens of the present invention is not based, or is only partially, based on changing the dimensions of the eyepiece, such as the thickness of the optical zone, to correct ametropic states. As a result, a lens design can be used to correct many different ametropic conditions that maximize the comfort of the wearer of the lens, without the need for a conventional refractive lens design.

The lens of the present invention utilizes the diffraction property of the holographic optical element (HOE), in particular the extensive HOE transmission, to provide correction capability. The extensive holographic optical element of the present invention includes interference strip systems which have been fixed or adjusted as a periodic change in the refractive index of the optical material. Periodic change of refractive index a

70458 / BT * 3 * 00:09:05

-4-fracture index creates vertices of a peak within the optical element, such as an extended strip system. The extensive strip system deflects the light entering the holographic optical element, so the path of the light changes and the direction turns in the desired direction. Figure 1 shows the present invention with a correction lens for hyperopia. The lens 10 is a HOE having a system of 12 interference bands. The system of interference strips 12 directs the light 14, which enters one side of the lens 10, so as to accumulate at the focus point 16 which is located on the other side of the lens. According to the present invention, the incident light 14 is preferably diffractioned and directed to a low focal point by more than one interference strip system 12.

Figure 2 illustrates an exemplary method for producing a holographic optical element of the present invention. Holographic optical elements suitable for the present invention can be manufactured, for example, from polymerizable crosslinkable optical materials and photographic hologram fastening materials. Suitable optical materials are discussed below. In the following, for the sake of illustration, the term "polymerizable material" is used to denote both polymerizable materials and crosslinkable materials, and attention is drawn to other cases. The point source beam 20 is projected onto the photopolymerizable optical material 22 (i.e. photo-polymerizable HOE) and simultaneously projected a parallel reference beam 24 on the photopolymerizable holographic optical element 22, thereby generating an electromagnetic waves of the object beam 20 and the reference beam 24, which is fixed in the polymerizable optical material while polymerizing. The photo-polymerizable HOE 22 is a photopolymerizable material which is polymerized by both the beam and the reference beam. Preferably, the object beam and the reference beam are generated from a parallel light source using a beam splitter. The two distributed portions of the beam are projected onto the holographic optical element 22, from which the path of the beam portion of the distributed beam is modified to form the beam 20. For example, the object source beam 20 is provided by placing a conventional convex optical lens at a given distance from the photopolymerizable holographic optical element 22 so that a portion of the bifurcated beam is focused from the photo-polymerizable holographic optical element 22 to the desired distance, i.e. Figure 2. 20 point sources

T0.458 / 4 * BT * 00:09:05

-5 • «· · · ·. ··· ··· · · · · *. * * *

beam in place. The preferred light source is a laser light source and the most preferred light source is a UV laser light source. Although the wavelength of the appropriate light source depends on the type of HOE used, the preferred wavelength range is between 300nm and 600nm. When the photopolymerizable holographic optical element 22 is fully embedded and polymerized, the resulting HOE comprises a fixed system of interference strips (i.e., an extended strip system 26). The polymerized 22 HOE has 20 focal points corresponding to the position of the object source beam 20 when light enters the holographic optical element from the opposite side of the focal point. According to the present invention, the refractive power of the lens can be varied, for example, by varying the position and distance of the beam 20 of the object. Figure 2 shows an example of a manufacturing process for a holographic optical element when HOE has a positive correction capability. It will be appreciated that a holographic optical element having a negative correction capability can be produced with the HOE maker arrangement discussed above, with only a few modifications made. For example, a convergent source beam source that creates a focal point on the side opposite to the HOE light source can be used to create a holographic optical element with a negative correction capability at the point source beam location. Similarly, other correctional needs can be satisfied by changing the arrangement or structure of the object and reference beam sources, i.e., HOE can be programmed to have correctional dimensions for disproportionate and distorted corneal curvature of irregular astigmatic states by specifically designing the object beam and the reference beam arrangement.

As discussed above, suitable HOE can be made from polymerizable or crosslinkable optical materials which can be rapidly photo-polymerized or photo-cured. The rapidly polymerizable material allows for refractive index modulation in the optical material, thereby forming an extensive strip system while the material is polymerized to transform into a solid optical material. Examples of polymerizable optical materials suitable for the present invention are, for example, U.S. Patent No. 5,508,317 to Beat Müller, and International Patent Application Mühlebach PCT / EP96 / 00246, which is incorporated herein by reference and is hereby incorporated by reference. 5,508,317

70 458/5 * BT * 00:09:05

According to U.S. Patent No. 6,106,10, a preferred group of polymerizable optical materials are compounds containing a 1,3-diol base structure, wherein a specified percentage of 1,3-diol units is converted to 1,3dioxane which the 2-position contains a polymerizable but non-polymerized group. The polymerizable optical material is preferably a polyvinyl alcohol derivative having a weight average molecular weight (M w ) at least 2000, and from about 0.5 to about 80%, based on the hydroxyl groups of polyvinyl alcohol, of the compound of formula (I)

oo

(I) - in the formula

R is alkylene having up to 8 carbon atoms;

R 1 is hydrogen or lower alkyl; and

R 2 is an olefinically unsaturated, electron-withdrawing, copolymerizable group, preferably containing up to 25 carbon atoms, for example an olefinically unsaturated R 3 -CO-, wherein

R 3 is an olefinically unsaturated, electron-attracting, copolymerizable group having from 2 to 24, preferably from 2 to 8, more preferably from 2 to 4 carbon atoms.

In another embodiment of the present invention, R 1 is as follows: 2 means one

-CO-NH- (R 4 -NH-CO-O) q -R 5 --O-CO-R 3 A group of formula (II) wherein q is zero or one;

R 4 and R 5 independently selected from the group consisting of C 2 -C 8 alkylene, C 6-12 arylene, C 6 -C 10 saturated, divalent cycloaliphatic,

70 458/6 * BT * 00:09:05

7 ··· «·« ···· · ···· ♦ · · ··· ··· ···· · • · · * * «· * ·· * * 1

C7-C14 arylene-alkylene or alkylene-arylene or C13-16-arylene-alkylene-arylene; and

R 3 meaning above.

The lower alkylene group R as a substituent preferably contains up to 8 carbon atoms and may be straight or branched, for example octylene, hexylene, pentylene, butylene, propylene, ethylene, methylene, 2-propylene, 2-butylene. - or 3-pentylene. More preferably, the lower alkylene R contains up to 6, most preferably up to 4 carbon atoms. Particularly preferred are methylene and butylene. R 1 preferably hydrogen or up to 7, more preferably up to 4 carbon atoms, most preferably hydrogen.

As for R 4 and R 5 wherein the lower alkylene group is preferably from 2 to 6 carbon atoms, more preferably a straight chain such as propylene, butylene, hexylene, dimethyl ethylene, especially ethylene. The R 4 or R 5 preferably substituted arylene group is unsubstituted or lower alkyl or lower alkoxy substituted phenylene group, especially 1,3-phenylene, 1,4-phenylene or methyl 1,4-phenylene. If R 4 or R 5 a substituent is a divalent saturated cycloaliphatic group, preferably a cyclohexylene group or a cyclohexylene (lower alkylene) group, such as a cyclohexylene methylene group which is unsubstituted or substituted with one or more methyl groups such as trimethylcyclohexylene methylene, e.g. isophorone. The R 4 or R 5 Preferably, the arylene moiety of the alkylene arylene or arylene alkylene substituent is a phenylene group which is unsubstituted or substituted by a lower alkyl or lower alkoxy group, and the alkylene moiety is preferably a lower alkylene, such as methylene or ethylene. CH. So R 4 or R 5 in this case the substituent is preferably phenylene methylene or methylene phenylene. If R 4 or R 5 is an arylene-alkylene-arylene group, preferably it is a phenylene (lower alkylene-n-phenylene group having an alkylene moiety of up to 4 carbon atoms, for example phenylene-ethylene-phenylene. 4 and R 5 meaning

70 458/7 * BT * 00:09:05

Independently of each other preferably an alkylene group of 2 to 6 carbon atoms, a phenylene group which is unsubstituted or small; Cyclohexylene or Cyclohexylene (lower alkylene) substituted with C amely-C amely alkyl, unsubstituted or lower alkyl, phenylene (lower alkylene), (lower alkylene) phenylene or phenylene (lower alkylene) phenyl.

For example, the polymerizable optical materials of formula (I) can be prepared by treating a polyvinyl alcohol with a compound of formula (III).

R. R 'oo / CH I

(ΙΠ)

0

wherein R, R and R are as defined above, and R 'and R' are independently hydrogen, lower alkyl or lower alkanoyl, such as acetyl or propionyl. Preferably, the polymerizable optical material thus obtained is substituted with 0.5 to about 80% of the hydroxyl groups by the compound of formula III.

Another group of polymerizable optical materials suitable for the present invention is disclosed in International Patent Application Publication No. PCT / EP96 / 00246. Suitable optical materials herein include poly (vinyl alcohol), poly (ethyleneimine), or polyvinylamine derivatives which are hydroxy groups of polyvinyl alcohol or polyethyleneimine or poly (ethylene). from about 0.5 to about 80% of the formula (IV) or (V) for the imino or amino groups of vinylamine);

70 458/8 * BT * 00:09:05

c = o R rc R P

II NH — C—

Contains (V) - R 1 and R 2 2 independently selected from hydrogen, C1-C8 alkyl, aryl or cyclohexyl, which are unsubstituted or substituted; R 3 is hydrogen or C1-C8 alkyl, preferably methyl; and R4 is -O- or -NH-, preferably -O-. The average molecular weight of polyvinyl alcohols, poly (ethyleneimine) or polyvinyl amines useful in the present invention is about 2000 to 1,000,000, preferably 10,000 to 300,000, more preferably 10,000 to 100,000. most preferably between 10,000 and 50,000. A particularly suitable polymerizable optical material is a water-soluble derivative of polyvinyl alcohol, which is from about 0.5% to about 80%, preferably from about 1% to about 25%, more preferably from about 0.5% to about 80%, based on the hydroxyl groups of the polyvinyl alcohol.

1.5 to about 12% of a compound of formula IV wherein R1 and R7 are present 2 is methyl, R 3 is hydrogen, and R4 is -O- (e.g. an ester bond).

70.458 / BT * 9 * 00.09.05 • · · 4 ·· · · · · · · · · ·

Polymerizable optical materials of formulas (IV) and (V) can be prepared, for example, by the addition of an azlactone of formula (VI).

(VI)

- in which R b R 2 and R3 is as defined above in a suitable organic solvent at elevated temperatures of 55 ° C to 75 ° C, optionally in the presence of a suitable catalyst, with polyvinyl alcohol, polyethyleneimine or poly ( vinylamine). Suitable solvents are those which dissolve the polymeric structure; such as aprotic polar solvents such as formamide, dimethylformamide, hexamethylphosphoric triamide, dimethyl sulfoxide, pyridine, nitro methane, acetonitrile, nitrobenzene, chlorobenzene, trichloromethane and dioxane. Examples of suitable catalysts include tertiary amines such as triethylamine and organic tin salts, such as dibutyltin dilaurate.

A group of other materials corresponding to the holographic optical element of the present invention may be made from conventional transmission holographic element fastening material. As with the polymerizable material detailed above, the point source beam and the parallel reference beam are simultaneously projected onto the HOE fastener, such that a system of interference strips of electromagnetic waves of the object and reference beam is formed. The interference system is fixed in the HOE material. When the HOE storage material is fully exposed, the stored HOE material is developed according to the known HOE elaboration procedure. The developed HOE has a focal point corresponding to the location of the point source object beam. Suitable transmissive holographic optical element fixation material includes commercially available holographic photographic storage media or disks such as dichromate gelatin. Holographic storage materials are available from various manufacturers, such as Polaroid Corp.

70 458/10 * BT * 00:09:05

- 11 If photographic (photographic) recording media are used for the holographic optical elements of ophthalmic lenses, the toxicological effects of the medium around the eye should be taken into account. Thus, if a conventional photographic HOE medium is used, the HOE is preferably enclosed in a biocompatible (biocompatible) optical material case. Suitable biocompatible optical materials include polymeric and non-polymeric optical materials used to make contact lenses such as hard lenses, rigid gas permeable lenses, or hydrogel lenses. Hydrogel lenses are generally made of hydrophilic crosslinking materials and contain from about 35% to about 75% water by weight of the hydrogel material. Copolymers which are 2-hydroxyethyl methacrylate and one or more comonomers, such as 2-hydroxyacrylate, ethyl acrylate, methyl methacrylate, vinyl pyrrolidone, N-vinyl acrylamide, hydroxypropyl methacrylate, can be used as hydrogel material. isobutyl methacrylate, styrene, ethoxyethyl methacrylate, methoxy triethylene glycol methacrylate, glycidyl methacrylate, diacetone acrylamide, vinyl acetate, acrylamide, hydroxytrimethylene acrylate, methoxymethyl methacrylate, acrylic acid, methacrylic acid, glycerol ethacrylate or dimethylaminoethyl acrylate. Copolymers containing methyl vinyl carbazole or dimethylaminoethyl methacrylate may also be used as a hydrogel material. A further group of suitable hydrogel materials include crosslinkable materials as described in U.S. Patent No. 5,508,317, mentioned above. A further class of suitable hydrogel materials include silicone copolymers as disclosed in PCT / EP96 / 01265. Examples of rigid gas permeable materials suitable for use in the present invention are crosslinked siloxane polymers. The crosslinking of such polymers is suitable for crosslinking agents such as N, N'-dimethylbisacrylamide, ethylene glycol diacrylate, trihydroxypropane triacrylate, pentaerythritol tetraacrylate and other similar multifunctional acrylates or methacrylates, or vinyl derivatives such as N-methylamino divinyl. contains carbazole. Suitable rigid materials include acrylates such as methacrylates, diacrylates and dimethacrylates, pyrrolidone and styrene derivatives, amides, acrylamides, carbonates, vinyl derivatives, acrylonitriles,

70.458 / ΒΤΊ1 * 00.09.05

Nitriles, sulfones and the like. Among the suitable materials, hydrogel materials are particularly preferred for the purpose of the invention.

The encapsulated eyepiece of the present invention includes a photographic HOE that can be produced by producing an HOE comprising an extensive strip system according to the present invention, which is preferably in the form of a sheet, thin disk or sleeve; placing the HOE in biocompatible optical material; and then polymerizing the biocompatible optical material to form an encapsulated composite lens. The encapsulation and polymerization steps can be carried out in the lens mold by creating a fully formed composite lens. In another embodiment, blocks or spheres are formed from a HOE-containing composite material and then shaped using a turning device for the eyepiece. In another embodiment, the two layers of the polymerized biocompatible optical material can be laminated to both sides of the HOE comprising the extended strip system to form the inventive eyepiece of the present invention.

According to the present invention, suitable HOEs preferably have a diffraction efficiency of at least about 75%, more preferably at least about 80%, most preferably at least about 95%, for each wavelength or substantially all wavelengths in the visible spectrum of light. Particularly suitable HOEs for the present invention have 100% diffraction efficiency for all wavelengths of the visible light spectrum when the Bragg condition is met. The Bragg condition is well known in the art of optics and, for example, is coupled by the Coupled Wave Theoiy Thick Hologram Gratings, by H. Kogelnik, The Bell System Technical Journal, Vol. 48, No. 9, p. 29092947 (Nov. 1969). The description of the Bragg condition is discussed here as a reference. HOEs having diffraction efficiencies lower than those described above may also be used in the present invention.

The HOEs suitable for the present invention are preferably multi-layered HOEs having at least two HOE layers, since the stratification of thin HOEs improves the diffraction efficiency and the optical quality of HOE, and enables the reduction of the HOE thickness. As is known in the ophthalmology, the thickness of the eyepiece should be thin to accommodate the comfort of the wearer of the lens.

70 458/12 * BT * 00:09:05

- 13 Serves. Suitably, the thin HOE is advantageous for the present invention. However, to provide a HOE having a high diffraction efficiency, the HOE should be optically thick, i.e., the light is diffracted by more than one plane of the interference strip system. One way of providing the optically thick and broadly thin HOE is to adjust the interference strip system in the direction that slopes in the direction of the HOE length. Such a sloping extensive strip system makes HOE-hogy such that it causes a high angular misalignment between the incident incidence angle and the exit light exit angle. However, HOE with high-angle deflection is not particularly suitable for eyepieces. For example, when such an HOE is placed on the eye, the direction of vision is significantly warped from the normal direction of vision. As a preferred embodiment of the present invention, in the design of the HOE, this angle limitation is treated using a multi-layered composite HOE, in particular a dual layer HOE. Figure 3 shows a composite HOE 40 illustrating the present invention. In two extensions, we assembled a thin HOE to form the composite HOE to provide a thin HOE that causes a low angle deflection. The multi-layer HOE 40 consists of a thin first HOE 42 and a thin second HOE 44. The first HOE 42 is designed to diffuse the incident light so that when the light enters the HOE at an angle, the light exiting the HOE 42 forms a sharp exit angle greater than that of the incident angle. 3A. Fig. 1 is a graph. Preferably, the first HOE has a thickness of between about 10 µm and about 100 µm, more preferably between about 20 µm and about 90 µm, most preferably between about 30 µm and about 50 µm. 3B. 2A is designed to have an β activation incident angle equal to the exit angle of the first HOE 42. Furthermore, the second HOE 44 is designed to collect the incident light at the focus point 46 when the light arrives within the activation angle β. 3B. Fig. 44 shows the second HOE 44. Preferably, the second HOE has a thickness of from about 10 µm to about 100 µm, more preferably from about 20 µm to about 90 µm, most preferably from about 30 µm to about 50 µm.

70 458/13 * BT * 00:09:05

When the first HOE 42 is placed next to the second HOE 44 and the incoming light enters the first HOE at an angle corresponding to the angle, then the path of light leaving the composite HOE 40 changes and light focuses on the focus point 46. Using a multi-layer composite HOE, a thin HOE can be produced with a high diffraction efficiency and a low-angle deflection. Furthermore, in addition to the advantages of high diffraction efficiency and low angular deflection, the use of multi-layered composite HOE also provides other advantages that include correcting chromatic aberrations and dispersion aberrations. Simple HOE can produce images with dispersion and chromatic aberrations, as the visible light consists of a spectrum of electromagnetic waves with different wavelengths, and wavelength differences can result in different electromagnetic waves on the HOE. It has been found that the multi-layer, in particular the double-layered HOE can act to correct the aberrations that can be generated by a simple HOE layer. Accordingly, the multi-layer composite HOE is preferred.

The lens manufacturing method of the present invention is a very flexible process that can be used to manufacture eyepieces with a wide range of correction capabilities, and the method produces eyepieces designed to enhance lens wear. Contrary to conventional eyepieces, the correction capability or capabilities of the present eyepiece are assured by providing the correction capability or capability by fitting the appropriate capability into the lens, without the need to change the lens dimensions. Furthermore, the manufacturer arrangement does not have to be fundamentally altered when the arrangement is changed to produce lenses having different correction capabilities. As discussed above, different correction abilities can be incorporated into the eyepiece, for example, by changing its distance and / or arrangement of the subject beam and the reference beam. Accordingly, the lens manufacturing process has been greatly simplified. Other advantages include the fact that eyepiece manufacturers do not need to have different lens manufacturing equipment and processes for producing a wide range of different lenses having different correction capabilities. Megfele70.458 / BT *! 4 * 00:09:05

- 15 · «>» - w »· ·; W * · »Μ · ··« · H · o ··>

in particular, eyepiece manufacturers do not need to manufacture and store a large number of different eyepieces having different layouts and / or sizes.

It should be noted that although the present invention has been discussed with regard to eyepieces, correction glasses with a wide HOE may be made in accordance with the present invention. For example, a thin film of HOE, designed to provide a correction capability, can be laminated to a flat-glass lens. Such spectacle lenses can be designed to enhance wearer comfort without sacrificing the lens's correction efficiency, since the HOE correction lens does not provide correction capability based on lens thickness as discussed above.

The present invention is further illustrated by the following example. However, the example does not limit the invention to which it relates.

Example

About 0.06 ml of Nelfilcon The lens monomer mixture is placed in the middle half of the negative die and a matching positive tool half is placed over the negative die half to form the lens tool assembly. The lens tool is designed to make a flat lens. The positive tool side does not touch the negative tool half and separates them about 0.1 mm. The lens tool halves are made of quartz and lined with chrome, except for the central circular 15 mm diameter lens. Briefly, Nelfilcon A is a crosslinkable modified polyvinyl alcohol product containing about 0.48 mmol / g of acrylamide crosslinker. The polyvinyl alcohol has an acetate content of about 7.5 mol%. The solid component of Nelfilcon A is about 31% and contains about 0.1% of Durocore® 1173 photoinitiator. The closed lens tool assembly is placed in a laser arrangement. The laser arrangement provides two coherent UV laser beams with 351 nm wavelengths, from which one beam is passed through an optically convex lens to form a focal point at a distance of 500 mm from the lens tool unit. The focused light serves the role of the point source object beam. The angle between the subject beam and the reference beam path is approximately 7 °. The layout provides a HOE

70.458 / BT * 15 * 00.09.05 • · · ·

-16 • · • • • • • designed to have the ability to correct 2 diopters. The flax monomer mixture is exposed to about 0.2 watt laser beams for about two minutes to complete polymerization of the mixture and to form an interference strip system. Since the lens tool is masked except for the center portion, the lens monomer is exposed to the center beam of the tool and subjected to the subject beam and the reference beam and polymerizes.

The tool unit is opened and the positive tool leaves the stuck lens halfway. About 0.06 ml of Nelfllcon The lens monomer mixture is again placed in the middle half of the negative tool, and the positive tool side is placed over the stuck lens over the negative tool half. The positive tool half and the negative tool half are separated by about 0.2 mm. The closed tool unit is again exposed to the laser arrangement except that the convex lens is removed from the subject beam arrangement. The lens monomer mixture is again exposed to the laser beams for about two minutes to complete polymerization of the mixture and to form the second interference barrier layer. The composite lens thus obtained has a +2 diopter optical capability.

70.458 / ΒΤΊ 6Ό0.09.05

Claims (24)

  1. Claims
    A method for manufacturing an optical lens for adjusting ametropic conditions, said lens having a first curvature and a basic curvature, the method comprising the steps of:
    a, for the production of an optical lens, for inserting a polymerizable optical base material into a mold, and b, irradiating said polymerizable base material with said electromagnetic waves in said mold, said electromagnetic waves forming a pattern of interference strips while polymerizing said polymerizable material, said pattern being fixed in said lens, forming an extensive strip system, thereby forming an extensive holographic element, wherein said pattern diffracts light entering said first curvature to correct said ametropic states when placed in the eye, in front of or in front of the eye.
  2. Method according to claim 1, characterized in that said method further comprises the steps of providing an additional polymerizable optical material layer and exposing said polymerizable material to electromagnetic waves so that said lens comprises a composite extensive holographic element.
  3. 3. The method of claim 1, wherein said electromagnetic waves are laser beams.
  4. The method of claim 3, wherein said lasers
    U.V. laser beams.
  5. The method of claim 1, wherein said method is for producing eyepieces.
    70 458/17 * BT * 00:09:05
    - 18 • ·
  6. 6. Lens according to the method of claim 1.
  7. 7. A flexible method for manufacturing an optical lens having a correction capability, the method comprising the steps of:
    inserting the polymerizable optical base material into a mold for the optical lens, and b, exposing said polymerizable base material in said mold to a pattern of electromagnetic waves, said electromagnetic waves polymerizing said polymerizable material and causing said pattern to cause an extensive strip system on said eyepiece while polymerizing it, thereby forming an extensive holographic element, wherein said extensive strip system is adapted to provide said correction capability of said optical lens when said optical lens is placed in, or in front of, a mammal's eye.
  8. The method of claim 7, further comprising the steps of providing an additional polymerizable optical layer and exposing said polymerizable material to electromagnetic waves to form said composite broad holographic element.
  9. Method according to claim 7, characterized in that said electromagnetic waves are laser beams.
  10. 10. The method of claim 9, wherein said lasers are U.V. laser beams.
  11. The method of claim 7, wherein said method is for producing eyepieces.
    70 458 / BT *! 8 * 00.09.05 • ··· ··· · · · · ··· ··· · »· | · κ
  12. 12. Lens according to the method of claim 7.
  13. 13. A method for producing an ophthalmic lens for adjusting ametropic conditions, said lens having a first curvature and a basic curvature, the method comprising the steps of:
    exposing the holographic storage material to electromagnetic waves, said electromagnetic waves constituting a pattern of interference strips of an extended strip system, and said pattern being designed to diffract the light entering the first curvature to at least partially correct said ametropic states; , elaborating the exposed holographic storage material, and c, encapsulating the developed storage material into a biocompatible optical material to form said optical lens.
  14. The method of claim 13, wherein said method further comprises the step of providing an additional layer of the exposed holographic storage material to form said composite extensive holographic element.
  15. 15. The method of claim 13, wherein said electromagnetic waves are laser beams.
  16. 16. The method of claim 15, wherein said lasers are U.V. laser beams.
  17. 17. The method of claim 13, wherein said method is for producing eyepieces.
    70 458/19 * BT * 00:09:05
    -20 • · · «¥
  18. 18. Lens according to the method of claim 13.
  19. 19. A method for manufacturing a lens for correcting eye amethral conditions, said lens having a first curvature and a base curve, the method comprising the steps of:
    inserting the polymerizable optical base material into a mold for the optical lens; in the lens, wherein said pattern modifies the light entering said lens to correct said ametropic states.
  20. 20. The method of claim 19, wherein said extensive strip system comprises an extensive holographic element and said method further comprises the steps of providing an additional polymerizable optical layer and exposing said polymerizable material to electromagnetic waves to said lens. to create a complex, extensive holographic element.
  21. 21. The method of claim 19, wherein said electromagnetic waves are laser beams.
  22. 22. The method of claim 21, wherein said lasers are U.V. laser beams.
    70 458/20 * BT * 00:09:05
  23. 23. The method of claim 19, wherein said method is for producing eyepieces.
  24. 24. Lens according to the method of claim 19.
    The proxy
    Dr. Bokor Tamás Patent.
    by S.B.G. & R. International Patent Office member H-1062 Budapest, Andrássy ut 113 Phone: 34-24-950. Fax: 34-24-32
    70.458 / BT * 21 * 00.09.05 • · ·
    Ρ01 00523
    3/3
HU0100523A 1997-12-29 1998-12-24 Holographic lens HU0100523A2 (en)

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PCT/EP1998/008463 WO1999033642A1 (en) 1997-12-29 1998-12-24 Holographic ophthalmic lens

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Families Citing this family (6)

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Publication number Priority date Publication date Assignee Title
US7927519B2 (en) 2003-07-30 2011-04-19 Eyesense Ag Reflection hologram sensor in contact lens
US20080218696A1 (en) * 2005-07-01 2008-09-11 Jose Mir Non-Invasive Monitoring System
US7905594B2 (en) * 2007-08-21 2011-03-15 Johnson & Johnson Vision Care, Inc. Free form ophthalmic lens
KR101980353B1 (en) * 2011-11-15 2019-08-28 엘지디스플레이 주식회사 Thin Flat Type Converge Lens
CN104516108B (en) * 2013-09-30 2017-05-10 清华大学 Design method for free curved surface imaging system
DE102015109703A1 (en) * 2015-06-17 2016-12-22 Carl Zeiss Smart Optics Gmbh Spectacle lens and method for producing a spectacle lens

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH626729A5 (en) * 1978-12-01 1981-11-30 Cabloptic Sa
CH635442A5 (en) * 1980-04-03 1983-03-31 Cabloptic Sa Method for coupling at least two optical fibers by means of a holographic lens and device for implementing this method.
US4580882A (en) * 1983-04-21 1986-04-08 Benjamin Nuchman Continuously variable contact lens
US4913990A (en) * 1987-10-20 1990-04-03 Rallison Richard D Method of tuning a volume phase recording
US4950567A (en) * 1988-01-15 1990-08-21 E. I. Du Pont De Nemours And Company Holographic optical combiners for head-up displays
US4959283A (en) * 1988-01-15 1990-09-25 E. I. Du Pont De Nemours And Company Dry film process for altering wavelength response of holograms
US4965152A (en) * 1988-01-15 1990-10-23 E. I. Du Pont De Nemours And Company Holographic notch filters
US5152788A (en) * 1989-12-27 1992-10-06 Minnesota Mining And Manufacturing Company Multifocal diffractive ophthalmic lens and method of manufacture
US5182180A (en) * 1991-08-27 1993-01-26 E. I. Du Pont De Nemours And Company Dry film process for altering the wavelength of response of holograms
US5296949A (en) * 1992-04-23 1994-03-22 Flexcon Company Inc. Optical authentication device
US5331445A (en) * 1992-08-18 1994-07-19 International Business Machines Corporation Increased Bragg angle sensitivity hologram system and method
US5406341A (en) * 1992-11-23 1995-04-11 Innotech, Inc. Toric single vision, spherical or aspheric bifocal, multifocal or progressive contact lenses and method of manufacturing
EP0853774B1 (en) * 1995-10-06 2001-11-07 Polaroid Corporation Holographic medium and process
JP2914486B2 (en) * 1995-12-26 1999-06-28 清藏 宮田 Optical fiber, and a method of manufacturing the same
WO1997027519A1 (en) * 1996-01-29 1997-07-31 Foster-Miller, Inc. Optical components containing complex diffraction gratings and methods for the fabrication thereof

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ZA9811872B (en) 1999-07-06
ID25903A (en) 2000-11-09
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TW428110B (en) 2001-04-01
AU746266B2 (en) 2002-04-18
JP2001526980A (en) 2001-12-25
DE69832528D1 (en) 2005-12-29
DE69832528T2 (en) 2006-08-10
IL136887D0 (en) 2001-06-14
KR20010033711A (en) 2001-04-25
WO1999033642A1 (en) 1999-07-08
CN1285778A (en) 2001-02-28
CA2313189C (en) 2007-08-28
PL341097A1 (en) 2001-03-26
AU2417299A (en) 1999-07-19
BR9814518A (en) 2000-10-17
AT310633T (en) 2005-12-15
EP1044097B1 (en) 2005-11-23
EP1044097A1 (en) 2000-10-18
NO20003380D0 (en) 2000-06-28

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