• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
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    • 专利摘要:
    AN OPTICAL SYSTEM DEMONSTRATING BETTER RESISTANCE TO EXTERNAL EFFECTS OF OPTICAL DEGRADATION. A system for projecting one or more synthetic optical images, which demonstrates better resistance to external effects of optical degradation, is provided. The system of the present invention serves to lock the focal length of the elements focused in place. In other words, there are no other transparent materials or layers that when in contact with the system of the invention will significantly serve the focal length or optical acuity of syntactic images formed by the system.
    公开号:BR112012033221B1
    申请号:R112012033221-0
    申请日:2011-06-22
    公开日:2020-11-03
    发明作者:Richard A. Steenblik；Mark J. Hurt；Samuel M.Cape；Gregory R. Jordan
    申请人:Visual Physics, Llc.；
    IPC主号:
    专利说明:

    RELATED DEPOSITS
    This application is partly a continuation of US patent application with serial number 11 / 771,623, filed on June 29, 2007 and US patent application with serial number 11 / 932,468, filed on October 31, 2007, both which claim priority for US patent application with serial number 10 / 995,859, filed November 22, 2004 (now US 7,333,268), which claims priority for US Provisional Patent Application with serial number 60 / 524,281, filed on November 21, 2003, Provisional US Patent Application with serial number 60 / 538,392, filed on January 22, 2004 and Provisional US Patent Application with serial number 60 / 627,234, filed on November 12, 2004, all of which are hereby incorporated by reference in their entirety. TECHNICAL FIELD
    The present invention generally relates to an optical system for projecting one or more synthetic optical images, which demonstrates a better resistance to external effects of optical degradation. BACKGROUND AND SUMMARY OF THE INVENTION
    Micro-optical materials for projecting synthetic images generally comprise (a) a light-transmitting polymeric substrate, (b) an array of micrometric-sized image icons located on or within the polymeric substrate and (c) an array of the focusing elements ( for example, microlenses). The image icon arrangements and focus elements are configured so that when the image icon arrangements are viewed through the focus element arrangement, one or more synthetic images are projected. These projected images can show a number of different optical effects. Material constructions capable of exhibiting such effects are described in US Patent No. 7,333,268 issued to Steenblik et al., US Patent No. 7,468,842 issued to Steenblik et al., US Patent No. 0 7,738,175 issued to Steenblik et al. ., International Patent Publication No. WO 2005/106601 A2 granted to Commander et al., International Patent Publication No. WO 2007/076952 A2 granted to Kaule et al .; International Patent Publication no. WO 2009/000527 granted to Kaule et al .;
    International Patent Publication no. WO 2009/000528 granted to Kaule et al .;
    International Patent Publication No. WO 2009/000529 granted to Kaule et al .; and
    International Patent Publication no. WO 2009/000530 granted to Kaule.
    These optically variable materials can be used as security devices for authentication of banknotes or other security documents and products.
    For banknotes and other security documents, such optically variable materials are normally used in the form of a strip, line, stain or overlay and either partially embedded within the banknote or other security document, or applied to a surface of them. These materials can also be used as a stand-alone product that serves as a substrate for a subsequent printing or customization process.
    The present inventors have determined that these optically variable materials have a degree of optical sensitivity related to the susceptibility in the part of the focusing element arrangement (e.g., focusing element array) to getting dirty, tearing (e.g., scratches), and disturbances in focal properties, whenever a harmful material comes into contact with the matrix surface. Harmful materials that cause disturbance in the focusing properties include adhesive coated substrates (for example, adhesive tapes), liquids, or other materials having a refractive index that is different from that of air. In particular, the synthetic image or images projected by these materials tend to disappear, blur or blur when such harmful material is applied to the matrix surface of the focusing element, the harmful material causes an undesirable change in the refractive angle of the matrix surface.
    The present invention solves this problem by providing a system for projecting one or more synthetic optical images, which demonstrates an improved resistance to external effects of optical degradation. The inventive system basically comprises: (a) one or more arrangements of image icons; and (b) one or more, partially or fully incorporated image icon arrangements focusing elements, wherein the one or more image icon arrangements focusing elements is arranged in relation to one or more image icon arrangements, such that at at least a part of the image icon focusing on elements forms at least a synthetic image of at least a part of the image icons.
    In an exemplary embodiment, one or more image icon arrangements focusing elements are focusing refraction elements (for example, microlenses). The refractive index of an outer surface of this exemplary system for refractive interfaces varies between a first and a second refractive index, the first refractive index being measurably or substantially different from the second refractive index.
    In this exemplary mode, the arrangement (s) of the focusing elements is positioned between the eyes of a viewer and the arrangement (s) of the image icons, with variation in the refractive index achieved using a material (hereinafter referred to as "the second material") that (i) fills the interstitial spaces between at least part of the image icon focusing elements and / or covering these focusing elements, forming a distinct interface with the material used to form the focusing elements ((hereinafter referred to as "the first material1 '), or (li) diffuses into the first material thereby forming a gradient interface with the first material. The second material may partially or 5 the arrangement (s) of focusing elements completely or can encapsulate the inventive system.
    More preferably, the second material forms an outer border (or layer) of the arrangement of the image icon focusing elements (total incorporation of the arrangement (s) of focusing elements), or forms an outer border (or layer) of both the image icon arrangement (s) focusing on elements and the image icon arrangement (s) 10 (total system encapsulation).
    The phrase "measurably or substantially different", as used herein, means a difference in the index of refraction (for example, between the first and the second material) that causes the focal length (s) of the focusing elements change at least about 0.1 micron.
    The focal length (s) of the focusing elements in the inventive system is locked in place ensuring that interfaces (for example, refractive interfaces) responsible for the focus are incorporated within the system. In other words, no other transparent material or layers that come into contact with the inventive system will serve to materially alter the focal length (s) or optical acuity of the synthetic image (s). ) formed by this system.
    Through the present invention, the inventors have found that in addition to providing improved resistance to external effects of optical degradation, the use of a material that has a substantially or measurably different refractive index (for example, the second material) over the image icon focusing elements can increase the number of 25 F of focus elements in order to cause exaggerated optical effects. For example, when tilting the inventive system, synthetic images may appear deeper or higher above the system, or they may appear to move faster, depending on the desired optical effect.
    In a preferred embodiment, the system comprises: (a) an array of image icons; (b) an image icon matrix focusing on elements formed from a first material having a refractive index (n1); and (c) a second material having a different refractive index (n2) that fills the interstitial spaces between and / or covers the focusing elements, a different interface being formed between the first and second materials. In this preferred embodiment, the second material, which can fully incorporate the array of focusing elements forming an outer border (or layer) of the array, which can also be used to cover or incorporate the array of image icons, and thus encapsulate the system.
    When the retraction index of the first material (n1) is greater than the retraction index of the second material (n2) [n1> n2], the elements of focus in this preferred embodiment are converging lenses (for example, convex). On the other hand, when the retraction index of the first material (n1) is less than the retraction index of the second material 5 (n2) [n1 <n2], the elements of focus in this preferred mode are divergent lenses (for example, concave lenses) ). • The mode in which the second material fully incorporates the array of 'focus elements can be used in the form of, for example, a security strip, • lines, spots or overlap and mounted on a surface of, or at least partially incorporated inside a fibrous or non-fibrous sheet material (for example, bank notes, passport, identification or identification card, credit card, label), or commercial product (for example, optical discs, CDs, DVDs, medicine packaging), etc., for authentication purposes. This modality can also be used in the form of a stand-alone product (for example, a substrate for later printing 15 or personalization), or in the form of a non-fibrous sheet material for use in the manufacture of, for example, banknotes, passports and the like. As will be easily appreciated by experts in the field, the visual effects offered by the inventive optical system serve to increase the counterfeit resistance of these materials.
    The mode in which the second material fully encapsulates the inventive system; 20 forming an outer boundary (or layer) of both the image icon arrays focusing on elements and the image icon array, can be used as described above, or can adopt a thicker, more robust shape to use as, for example , a base platform for a high-value ID card or other security document. In another preferred embodiment, no different interface is formed between the array of focusing elements and the second material. Instead, the system comprises: (a) an array of image icons; and (b) an image icon matrix focusing on elements (for example, GRIN lenses) formed from a first material, having a refractive index (n1) and a second material having a different refractive index (n2), the second material, diffusing into the first material, thereby forming a gradient interface with the first material. The gradient interface acts as an element of; focus, the index of refraction changing spatially between, for example, outer borders of the first and second materials. In this preferred embodiment, the second material serves to fully incorporate the array of focusing elements and can also be used to cover or incorporate the array of image icons. Uses foreseen for this exemplary modality include those identified above.
    The present invention furthermore provides sheet materials and base platforms that are made of or employ the inventive optical system, as well as documents made with these materials. The term “documents” as used herein means documents of any kind that have financial value, for example, bank notes or coins, bonds, checks, traveler's checks, lottery tickets, stamps, stock certificates, property titles and the like, or identity documents, such as passports, identification cards, driver's licenses and the like, or unsafe documents, such as labels.The inventive optical system is also contemplated for use with consumer goods, such as bags or packaging used with consumer goods.
    Other features and advantages of the invention will be apparent to a person skilled in the art, from the following detailed description and accompanying drawings. Unless otherwise defined, all technical and scientific terms used in this document have the same meaning as those commonly understood by an ordinary person in the field to which this invention belongs. All publications, patents, patent applications and other references mentioned in this document are incorporated by reference, in their entirety. In case of conflict, this specification will be controlled, including definitions. In addition, the materials, methods and examples are illustrative only and are not intended to be limiting. BRIEF DESCRIPTION OF THE DRAWINGS
    The present disclosure can be better understood with reference to the following drawings. The same reference numbers designate corresponding parts in all drawings and the components in the drawings are not necessarily to scale, instead greater emphasis will be placed on clearly illustrating the principles of this disclosure. Although exemplary modalities are disclosed in relation to the drawings, there is no intention to limit this disclosure to the modality or modalities disclosed in this document. On the contrary, the intention is to cover all alternatives, modifications and equivalents.
    The particular characteristics of the disclosed invention are illustrated with reference to the accompanying drawings, in which:
    Fig. 1 is a side cross-sectional view of an embodiment of the encapsulated optical system of the present invention, where the optical system uses a matrix of converging lenses (for example, convex);
    Fig. 2 is a cross-sectional side view of another embodiment of the encapsulated optical system of the present invention, where the optical system uses an array of diverging lenses (for example, concave); and
    Fig. 3 is a cross-sectional side view of another embodiment of the encapsulated optical system of the present invention, where the optical system uses a matrix of converging gradient index (GRIN) lenses (e.g., convex). DETAILED DESCRIPTION OF THE INVENTION
    As described in detail, for example, in U.S. Patent No. 7,333,268 by Steenblik et al., The focal length of the focusing elements in micro-optical materials determines the optical separation of the focusing elements of an image icon array. In other words, the arrays of these state-of-the-art micro-optical materials are positioned so as to align the focal point of each focus element with its associated image icon (s). When the focal point is over or within the image icon matrix, the synthetic image is in sharp focus. When, however, the focal point is above or below the image icon matrix, the synthetic image is blurry and out of focus.
    By means of exemplary modalities of the present invention, the geometry of the focusing elements (for example, microlenses) and the refractive indices of both the first material and the second material are adapted to achieve the desired focal length and therefore the optical separation (if any) between arrays. Without such an adaptation, the focal length of the focus elements would be too long or too short (that is, the focal point of each focus element would fall above or below the array of image icons) for the system to produce one or more synthetic images.
    The physical properties of the components in these exemplary modalities are designed to function only when used in combination with each other. How easily it will be perceived by those skilled in the art, when adapting focus elements to achieve a desired focal length, would normally consider the radius of curvature and refractive indices of the material (s) used to make the elements focusing and the surrounding / encapsulated material (usually air). The difference (s) between indices, when combined with the radius of curvature, determines the angle of refraction. With a gradient index material (GRIN), the radius of curvature is determined by the concentration of the gradient, which, together with the difference (s) between the refractive indices, determines the refractive angle.
    The inventive optical system will now be described in one of its exemplary forms as being a system comprising: (a) one or more image icon arrangements and (b) one or more image icon arrangements focusing on partially or fully incorporated elements, whose index of refraction varies between a first and a second index of refraction, the first index of refraction, being measurably or substantially different than the second index of refraction.
    The image icon arrangement (s) focusing on elements can be formed from one or a plurality of materials. For that image icon arrangement (s) focusing on elements with a variable refractive index, which are formed from a material, the arrangement (s) can be prepared by, for example, selective curing of the material so that the degree of crosslinking follows a gradient.
    The one or more arrangements of the image icon focusing on elements used in the practice of the present invention can be selected from the group of: i. a matrix of cylindrical or non-cylindrical lenses (for example, microlenses 5 including, converging lenses (for example, convex), diverging lenses (for example, concave), gradient index lenses (GRIN), air lenses; ii. opaque layer containing a plurality of openings (e.g., pinhole optics) ', and iii) a reflective layer.
    In a preferred embodiment, the focusing elements are non-microlensing
    convex or concave cylindrical, having a spherical or aspheric surface. Aspherical surfaces include conical, elliptical, parabolic and other profiles. These lenses can have circular, oval or polygonal (for example, hexagonal, substantially hexagonal, square, substantially square) geometries and can be arranged in dimensional or bidimensional, regular, irregular or random arrays.
    In a preferred embodiment, the microlenses are concave or convex aspherical lenses, with polygonal (for example, hexagonal) geometries that are arranged in a regular two-dimensional matrix on a substrate or polymeric film that transmits light.
    In another preferred embodiment, the focusing elements are concave or convex GRIN microlenses.
    The focusing elements, in a contemplated modality, have preferred widths (in the case of cylindrical lenses) and base diameter (in the case of non-cylindrical lenses) less than or equal to 1 millimeter including (but not limited to) diameters of 25 base / widths: ranging from about 200 to about 500 microns; and ranging from about 50 to about 199 microns, the preferred focal lengths of less than or equal to 1 millimeter including (but not limited to) the sub-intervals noted above and the preferred f-numbers less than or equal to 10 (more preferably, less than or equal to 6. In another contemplated embodiment, the focusing elements have preferred base diameters / widths of less than about 50 microns (more preferably, less than 45 microns and more preferably, from about 10 to about 40 microns) microns), preferred focal lengths of about 50 microns (more preferably, less than about 45 microns to more preferably, about 10 to about 30 microns) and preferred f-numbers less than or equal to 10 (more preferably, less or equal to 6).
    The one or more arrangements of the image icons used in the practice of the present invention are preferably composed of micro-structured image icons (i.e., image icons having a physical relief).
    In an embodiment contemplated by the present invention, the image icons are optionally coated and / or filled or recessed on or within a substrate. The voids or recesses each measure from about 0.5 to about 8 microns in total depth.
    In another contemplated modality, the image icons are formed from post forms formed on a surface of a substrate, each measuring from about 0.5 to about 8 microns in total height.
    Although not required by the present invention, optical separation between the array of image icons focusing on elements and the image icons can be achieved using an optical spacer. In such an embodiment, an optical spacer is connected to the arrangement (s) of focusing elements. In another embodiment, an optical spacer may be formed as part of the focusing element arrangement (s), or the thickness of the focusing element arrangement (s) is increased to allow the arrangement (s) (s) are self-employed. In another embodiment, the optical spacer is connected to another optical spacer.
    The optical spacer can be formed using one or more essentially colorless materials, including, but not limited to, polymers such as polycarbonate, polyester, polyethylene, polyethylene naphthalate, polyethylene terephthalate, polypropylene, polyvinylidene chloride and the like.
    As described in U.S. Patent No. 7,333,268 to Steenblik et al., U.S. Patent No. 7,468,842 to Steenblik et al. and US Patent No. 7,738,175 to Steenblik et al., arrays of focusing elements and image icons can be formed from a variety of materials such as substantially transparent or clear, colored or colorless polymers such as acrylics, acrylated polyesters, urethanes acrylates, epoxies, polycarbonates, polypropylenes, polyesters, urethanes and the like, using a multitude of methods that are known in the art of micro optics and microstructure replication, including extrusion (eg extrusion embossing, soft embossing), curing casting radiation, injection molding, reaction injection molding and reaction casting. High refractive indices, colored or colorless materials having refractive indices (at 589 nm, 20 ° C) of more than 1.5, 1.6, 1.7, or higher, such as those described in the Patent Application Publication US No. NOS A1 2010/0109317 to Hoffmuller et al., Can also be used in the practice of the present invention.
    An exemplary manufacturing method for embodiments described in this document is to form the icons as voids in a radiation-cured liquid polymer (eg, acrylated urethane), which is fused against a base film (ie, an optical spacer), such as polyethylene terephthalate (PET) film promoted by 75 caliber adhesion, then form the radiation curing polymer lenses on the opposite side of the base film in the correct alignment or tilt with respect to the icons, then fill in the empty icons
    with a rotogravure-pigmented colored submicron particle material skating against the surface of the film, and solidifying the filling by suitable means (eg solvent removal, radiation curing, or chemical reaction).
    The second material has a refractive index that is measurably or substantially different from the refractive index of the material used to form the focus elements (i.e., the first material). In particular, the difference in these refractive indices causes the focal length of the focusing elements to change by at least about 0.1 microns.
    The second material can be transparent, translucent, colored or pigmented and can provide additional functionality for security and authentication purposes, including support for automatic authentication, verification, tracking, counting and currency detection systems, which depend on optical effects, electrical conductivity or electrical capacitance, magnetic field detection. Suitable materials may include adhesives, gels, glues, lacquers, liquids, molded polymers and polymers or other materials containing organic or metallic dispersions.
    The second material is applied to either the first material of the focusing element arrangement (s) or both the first material of the focusing element arrangement (s) and the icon arrangement (s) image by transparent printing, molding, sol-gel (chemical solution deposition), curtain coating or sliding, flood coating and outdoor drying / curing, ultraviolet (UV) coating and curing / energy against a smooth cylinder, lamination with adhesive made of film, anilox roll or measurement, evaporation, chemical vapor deposition (CVD), physical vapor deposition (PVD) or any other means of applying a substance to a surface, including those described in US Patent no. 7,333,268 to Steenblik et al., U.S. Patent No. 7,468,842 Steenblik et al., And U.S. Patent No. 0 7,738,175 to Steenblik et al., All of which, as mentioned above, are fully incorporated into this document by reference as established.
    The optical system of the present invention may further comprise additional features, such as those described in U.S. Patent No. 0 7,333,268 to Steenblik et al., U.S. Patent No. 7,468,842 to Steenblik et al. and U.S. Patent No. 7,738,175 to Steenblik et al. For example, the inventive system can also comprise textured surfaces for better adhesion to other layers, adhesion promoters, etc.
    The inventive optical system will now be described, disclosed, illustrated and shown below in one of its simplest forms, being a system that basically comprises: (a) an array of image icons and (b) an array of image icons focusing on elements fully incorporated. The scope of the present invention is not intended to be, nor should it be considered, limited, so and such other modalities as shown or suggested by the teachings of this document or by publications, patent filings, patents and other references mentioned in this document, are particularly reserved.
    Referring now to FIGS. 1 and 2 of the drawings, exemplary embodiments of the system of the present invention are shown generally at 10. System 10 basically comprises: (a) an array of image icons 12; (b) an image icon matrix focusing elements 14 formed from a first material 16 having a refractive index (n1), the image icon matrix focusing elements 14 consists of converging lenses (for example, convex) 18 in Fig. 1, and diverging lenses (for example, concave) 20 in Fig. 2; (c) a second material 22, having a refractive index (n2); and (d) an optical spacer 24 positioned between the image icon array 12 and the image icon array focusing elements 14, wherein, the second material 22 also forms a layer on the image icon array 12, thus encapsulating fully the system.
    In these exemplary modalities, the lens geometry and refractive indices n1 and n2 are adapted to achieve the desired focal length, where both modalities are greater than zero.
    In another exemplary embodiment of the inventive system, which is marked with the numerical reference 26 in Fig. 3, the focus elements of the image icon take the form of GRIN 28 convex micro lenses. Here, the refractive index changes spatially between outer borders of first and second materials 22, 16. This refractive index gradient can be formed by a diffusion process using temperature, using different materials with different molecular weights, exploring the solubility or miscibility of one of the materials in the other, by selective curing so that the degree of crosslinking follows a gradient or by other techniques known to those skilled in the art. The second material 22, in this embodiment, forms a layer on the matrix of image icons 12, thus encapsulating the system completely.
    As noted above, the inventive system can be used in the form of, for example, a security strip, lines, stains or overlay on a surface of, or at least partially incorporated into, a fibrous or non-fibrous sheet material (for example , bank notes, passport, identification card, credit card, label), or commercial product (for example, optical discs, CDs, DVDs, medicine packaging), etc., for authentication purposes. The inventive system can also be used in the form of a stand-alone product (for example, substrate for later printing or personalization), or in the form of a non-fibrous sheet material for making, for example, banknotes, passports and the like, or can adopt a thicker, more robust shape
    to make, for example, a base platform for a high-value identification card or other security document.
    When used in the form of a security strip, lines, spots or overlap, the total thickness of the inventive system is preferably less than about 50 microns (more preferably, less than about 45 microns and, more preferably, about 10 to about 40 microns). The image icon matrix focusing on elements is preferably formed from a first material selected from the group of acrylated urethanes, epoxy acrylates and acrylic oligomers, the first material having a refractive index ranging from about 1.5 to about 1.8 and a second material selected from the group of urethane acrylates and acrylic monomers, the second material has a refractive index ranging from about 1.35 to about 1.49. Most preferably, the first material is a modified epoxy acrylate, which is available from Sartomer USA, LLC, 502 Thomas Jones Way, Exton, PA 19341 ("Sartomer"), under the product designation CN115, the first material having an index of refraction, from about 1.549 to about 1.56 while the second material is isodecyl acrylate, available from Sartomer under the product designation SR395, the second material having a refractive index ranging from about 1.44 to about of 1.45.
    Security strips, lines, stains and overlays can be partially embedded within or mounted on a document surface. For strips and lines partially embedded, parts of them are exposed on the document surface at spaced intervals along the length of the ribbon or lines in windows or openings in the document.
    The inventive optical security devices can be at least partially incorporated into the security documents during manufacture by techniques commonly used in the papermaking industry. For example, the inventive safety device in the form of a strip or lines can be fed into a cylindrical mold paper making machine, cylindrical barrel machine or similar machine of the known type, resulting in total or partial incorporation of the tape or the lines inside the finished paper body.
    The security strip, lines, stains and overlays can also be adhered to or attached to a document surface with or without the use of an adhesive. Bonding without the use of an adhesive can be achieved using, for example, with thermal welding techniques such as ultrasonic welding, vibration welding and laser fusion. Adhesives for adhering inventive devices to a document surface can be one of hot-melt adhesives, heat-activated adhesives, pressure-sensitive adhesives and polymeric laminating films. These adhesives are preferably crosslinked to the natural, such as acrylic or UV cured epoxy, with crosslinking achieved while the adhesive is in the melting phase.
    In another contemplated modality, the inventive system is part of a construction of a label containing a transparent or translucent adhesive (that is, the second material) in contact with the first material of the arrangement (s) of focusing elements or layer of lens. The inventive system can be placed inside a package, so that the synthetic image (s) remains visible.
    When used in the form of a base platform for an ID card, high value or other security document, the total thickness of the inventive system is preferably less than or equal to approximately 1 millimeter (mm), including (but not limited to) ) thickness: ranging from about 200 to about 500 microns; ranging from about 50 to about 199 microns; and less than about 50 microns. The image icon matrix focusing on elements is preferably formed from a first material selected from the group of urethane acrylates and acrylic monomers, the first material with a refractive index ranging from about 1.35 to about 1.49. The second material is preferably selected from the group of epoxy acrylates, polyester oligomers, poly (aromatic carbonates) and poly (aliphatic carbonates), the second material having a refractive index ranging from about 1.5 to about 1.8 . More preferably, the first material is tri (propylene glycol) diacrylate, which is available from Sartomer under the product designation SR306, the first material having a refractive index ranging from about 1.499 to about 1.46, while second material is polycarbonate, which is available from Bayer Materialscience AG, Kaiser-Wilhelm-Allee, 51368 Leverkusen Germany, the second material having a refractive index, which ranges from about 1,584 to about 1,685.
    In this embodiment, concave lenses would be formed in an optical spacer using the lower refractive index material (ie, the first material). A layer of polycarbonate, having a higher index of refraction (that is, the second material), must be placed over the concave lenses. Then heat and pressure will be applied to remove the trapped air and compress the polycarbonate in the lens cavities. Once cold, the system would present sharp synthetic images focused with a smooth and protective top layer.
    Although various embodiments of the present invention have been described above, it should be understood that they were presented by way of example only and not by way of limitation. Thus, the scope and scope of the present invention should not be limited by any of the exemplary modalities.
    权利要求:
    Claims (14)
    [0001]
    1. System to project one or more synthetic optical images, which demonstrates a better resistance to the external effects of optical degradation, characterized by comprising: (a) one or more arrangements of image icons; and (b) one or more fully incorporated arrangements of image icon focusing elements, wherein the one or more arrangements of image icon focusing elements are arranged in relation to one or more image icon arrangements so that at least a portion of the focus elements of the image icon forms at least one synthetic image of at least a portion of the image icons, in which the focal length (s) of the focus elements in the system is locked in place ensuring that interfaces responsible for the focus are incorporated within the system, the system comprising in that order: an array of image icons; an optical spacer; an array of image icon focusing elements formed from a first material having a refractive index (n1); and a second material having a different refractive index (n2) that fills the interstitial spaces between and covers the focusing elements, where the refractive index of the first material is lower than the refractive index of the second material, where the icons of images are voids or recesses formed on or within a substrate, where the voids or recesses each measure from about 0.5 to about 8 microns in total depth, where the focus elements of the image icon are concave lenses and in which the voids or recesses are optionally coated and / or filled.
    [0002]
    2. System, according to claim 1, characterized by the fact that the first material is a material with a high refractive index, colored or colorless with a refractive index greater than 1.7, or in which the second material is a material with a high refractive index, colored or colorless with a refractive index greater than 1.7, or in which the second material is a transparent or translucent adhesive.
    [0003]
    3. System according to claim 1, characterized by the fact that one or more fully incorporated arrangements of focusing elements of the image icon comprises focusing elements of the image icon selected from the group of cylindrical lenses, non-cylindrical lenses and combinations thereof, in which, optionally, the lenses have spherical or aspherical surfaces, or where, optionally, the lenses have base widths or diameters equal to or less than about 1 millimeter, and where, optionally, the lenses have widths or base diameters ranging from about 200 to about 500 microns, or where, optionally, the lenses have base widths or diameters ranging from about 50 to about 199 microns, or where, optionally, the lenses have base widths or diameters less than about 50 microns.
    [0004]
    4. System according to claim 1 or 3, characterized in that the system has a thickness equal to or less than about 1 millimeter, in which, optionally, the system has a thickness that varies from about 200 to about 500 microns, or where the system is optionally provided with a thickness ranging from about 50 to about 199 microns, or where the system is optionally less than 50 microns thick.
    [0005]
    5. Sheet material, made from the system for projecting one or more synthetic optical images as defined in claim 1, characterized by the fact that it can optionally be used as a substrate for later printing or personalization or as sheet material for security documents, or as a base platform for ID cards and security documents.
    [0006]
    6. Sheet material according to claim 5, characterized in that the sheet material has a thickness less than or equal to about 1 millimeter, where, optionally, the sheet material has a thickness of about 200 to about 500 microns, where, optionally, the sheet material has a thickness of about 50 to about 199 microns, where, optionally, the sheet material is less than 50 microns thick.
    [0007]
    7. Base platform, made from the system for the projection of one or more synthetic optical images as defined in claim 1, characterized by the fact that, optionally, the first material has a refractive index that varies from about 1.35 to about 1.49, and, where, optionally, the first material is selected from the group of urethane acrylics and acrylic monomers, or where, optionally, the second material has a refractive index that varies from about 1.5 to about 1.8 and, where, optionally, the second material is selected from the group of epoxy acrylates, polyester oligomers, poly (aromatic carbonates), and poly (aliphatic carbonates), or where, optionally, the second material has a refractive index ranging from about 1.584 to about 1.685, where, optionally, the second material is polycarbonate, or where, optionally, the second material is a transparent adhesive or translucent.
    [0008]
    8. Base platform, according to claim 7, characterized by the fact that the first material has a refractive index ranging from about 1.449 to about 1.46, where, optionally, the first material is tri diacrylate ( propylene glycol).
    [0009]
    9. Security device, made from the system for projecting one or more synthetic optical images as defined in claim 1 or 2, characterized by the fact that, optionally, it is selected from the group of security strips, lines, spots and overlays, for mounting on a surface of, or at least partially embedded in, a sheet material.
    [0010]
    Security device according to claim 9, characterized in that the security device has a thickness of less than about 50 microns, where, optionally, the security device has a thickness of less than about 45 microns, and , where, optionally, the safety device has a thickness of about 10 to about 40 microns.
    [0011]
    11. Sheet material having opposite surfaces, characterized by the fact that it comprises at least one safety device as defined in claim 9, mounted on a surface of, or at least partially incorporated in, the sheet material.
    [0012]
    12. Document made from sheet material, as defined in claim 11, characterized by the fact that, optionally, it is selected from the group of bank notes, passports, identification cards, credit cards, and labels and that optionally comprises a banknote.
    [0013]
    13. System according to claim 3, characterized in that the lenses have widths or base diameters less than about 45 microns, in which, optionally, the lenses have widths or base diameters ranging from about 10 to about 40 microns.
    [0014]
    14. System, according to claim 1, characterized by the fact that the optical separation between the arrangements of image icons and focusing elements of the image icon is obtained using an optical spacer, in which, optionally, the optical spacer is formed using a material selected from the group consisting of polycarbonates, polyesters, polyethylenes, polyethylene naphthalates, polyethylene terephthalates, polypropylenes, polyvinylidene chlorides, and combinations thereof.
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    同族专利:
    公开号 | 公开日
    ES2731671T3|2019-11-18|
    KR20130092549A|2013-08-20|
    CA2803857C|2018-10-30|
    RU2013101539A|2014-07-27|
    BR112012033221A2|2016-11-16|
    RU2602487C2|2016-11-20|
    CN103097919A|2013-05-08|
    JP6759280B2|2020-09-23|
    AU2011271030A1|2013-01-17|
    MX2013000197A|2013-06-28|
    CA2803857A1|2011-12-29|
    AU2011271030C1|2016-09-29|
    EP2585861B1|2019-03-27|
    JP2018156110A|2018-10-04|
    KR101946656B1|2019-02-11|
    JP2013537640A|2013-10-03|
    US8867134B2|2014-10-21|
    CN103097919B|2018-06-22|
    AU2011271030B2|2015-01-15|
    RU2602487C9|2017-08-29|
    US20100308571A1|2010-12-09|
    WO2011163298A1|2011-12-29|
    EP2585861A1|2013-05-01|
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    法律状态:
    2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-10-22| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-05-26| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-11-03| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 22/06/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US12/820,320|US8867134B2|2003-11-21|2010-06-22|Optical system demonstrating improved resistance to optically degrading external effects|
    US12/820,320|2010-06-22|
    PCT/US2011/041348|WO2011163298A1|2010-06-22|2011-06-22|An optical system demonstrating improved resistance to optically degrading external effects|
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