Micro-texture structure, product, housing and electronic device

Abstract

A product, a housing and an electronic device. The product, the housing and the electronic device each have a micro-texture structure. The micro-texture structure comprises: a transparent carrying layer, comprising a first side and a second side arranged opposite to each other; a structural layer, wherein the structural layer is arranged on the first side, and a lens array is arranged in the structural layer; and an image-text layer, wherein the image-text layer is arranged on the second side, a graphic unit array is arranged in the image-text layer, at least some of graphic units in the graphic unit array comprise a plurality of ring-shaped pattern layers which are sleeved with each other, and the graphic unit array is projected through the lens array to form a three-dimensional image.

Description

Micro-textured structures, products, housings and electronic devices

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202311422191.6, filed on October 27, 2023, entitled “Microtexture structure, article with microtexture structure and method for preparing microtexture structure”, the entire contents of which are incorporated herein for all purposes. Technical Field

[0003] The present application belongs to the technical field of electronic equipment, and specifically relates to a micro-texture structure, product, housing and electronic equipment. Background Art

[0004] With the development of technology and the improvement of living standards, users' demands for electronic devices are no longer satisfied with the diversification and perfection of their functions. They pay more attention to the aesthetic design. Usually, 3D imaging films are formed on the surface of electronic devices to enhance the visual effect.

[0005] In related art, 3D imaging films typically feature a textured layer and an image layer on opposite sides of a transparent substrate. The lens array in the textured layer projects or reflects the pattern in the image layer, creating an image with a magnified effect. However, these 3D imaging films only achieve a magnified effect on the pattern in the image layer, lacking a three-dimensional effect.

[0006] Summary of the Invention

[0007] The present application aims to provide a micro-texture structure, product, housing and electronic device, which can solve the problem that the 3D imaging film in the related art can only achieve the magnification effect of the pattern in the image layer and lacks three-dimensional effect.

[0008] In order to solve the above technical problems, this application is implemented as follows:

[0009] In a first aspect, the present application provides a micro-texture structure, comprising:

[0010] a transparent supporting layer, the transparent supporting layer comprising a first side and a second side disposed opposite to each other;

[0011] a structural layer, the structural layer being disposed on the first side and having a lens array disposed therein;

[0012] A graphic layer is provided on the second side, wherein a graphic unit array is provided in the graphic layer, at least some of the graphic units in the graphic unit array include a plurality of annular pattern layers nested with each other, and the graphic unit array forms a three-dimensional image after being projected by the lens array.

[0013] In some embodiments, the plurality of annular pattern layers in the graphic unit are sequentially arranged from the inside to the outside, and a gap exists at least partially between two adjacent annular pattern layers.

[0014] In some embodiments, the graphic unit array corresponds to the position of the lens array, and the period of the graphic unit array is the same as the period of the lens array position.

[0015] In some embodiments, the period of the lens array is 5 μm-5 mm.

[0016] In some embodiments, pattern points on the annular pattern layer are projected through at least one lens in the lens array to form image points in the three-dimensional image.

[0017] In some embodiments, a reference plane is defined that passes through the vertex of the lens and is parallel to the plane where the image layer is located. A point in the reference plane is taken as the coordinate origin (0, 0, 0), the coordinates of the pattern point are (xOti, yOti, h0), the coordinates of the projection point on the lens corresponding to the pattern point are (xOti, yOti, hc), the coordinates of the focus of the lens are (xOm, yOm, F), and the coordinates of the image point are (xti, yti, hti), satisfying the following formula:

[0018] Among them, h0 is the height of the annular pattern layer from the reference plane, hti is the height of the image point from the reference plane, F is the focal length of the lens, hc is the height of the projection point from the reference plane, and n is the equivalent refractive index of the transparent supporting layer and the structural layer.

[0019] In some embodiments, at least some of the lenses in the lens array have the same focal length.

[0020] In some embodiments, the focal points of at least some of the lenses in the lens array are in the same plane;

[0021] And / or, vertices of at least some of the lenses in the lens array are located in the same plane.

[0022] In some embodiments, the thickness of the transparent supporting layer is 0.01 mm to 5 mm.

[0023] In some embodiments, the lenses in the lens array are protrusions protruding from the structural layer, and along the thickness direction of the structural layer, the height H of the protrusions satisfies: 1 μm≤H≤2 mm.

[0024] In some embodiments, the method for preparing a microtexture structure comprises:

[0025] forming a structure layer having a lens array on a first side of the transparent supporting layer;

[0026] A graphic layer is formed on the second side of the transparent carrier layer, and a graphic unit array is provided in the graphic layer. At least part of the graphic units in the graphic unit array include a plurality of annular pattern layers nested with each other, and the graphic unit array forms a three-dimensional image after being projected by the lens array.

[0027] In some embodiments, forming a structural layer having a lens array on the first side of the transparent supporting layer includes:

[0028] determining the structure of the lens array;

[0029] A preset mold is obtained based on the structural processing of the lens array;

[0030] The structure layer is formed on the first side of the transparent supporting layer by using the preset mold.

[0031] In some embodiments, forming a graphic layer on the second side of the transparent carrier layer includes:

[0032] Determining, based on the three-dimensional image to be projected, image point coordinate information corresponding to the three-dimensional image;

[0033] Calculating the pattern point coordinate information corresponding to the graphic unit according to the image point coordinate information and the optical parameters of the lens;

[0034] The graphic unit array is formed by processing the second side of the transparent carrier layer based on the pattern point coordinate information.

[0035] In some embodiments, forming the graphic unit array on the second side of the transparent carrier layer based on the pattern point coordinate information includes:

[0036] forming a film layer on the surface of the second side of the transparent supporting layer;

[0037] The film layer is processed based on the pattern point coordinate information to obtain the graphic unit array.

[0038] In a second aspect, an embodiment of the present application proposes a product, comprising a product body, and the micro-texture structure as described above, wherein the micro-texture structure is provided on the surface of the product body.

[0039] In a third aspect, an embodiment of the present application proposes a shell, comprising a shell body, and the micro-texture structure as described above, wherein the micro-texture structure is provided on the shell body.

[0040] In a fourth aspect, an embodiment of the present application proposes an electronic device, comprising a device body, and the micro-texture structure as described above, wherein the micro-texture structure is provided on the device body.

[0041] In an embodiment of the present application, a structural layer is provided on the first side of the transparent carrying layer, a graphic layer is provided on the second side of the transparent carrying layer, a lens array is provided in the structural layer, and a graphic unit array is provided in the graphic layer. At least some of the graphic units in the graphic unit array include a number of mutually nested annular pattern layers. The graphic units composed of the annular pattern layers can form a part of a three-dimensional image after being projected by the corresponding lenses, and then the graphic unit array can form a complete three-dimensional image after being projected by the lens array. The three-dimensional image can present a three-dimensional suspension effect, thereby greatly enhancing the user's visual experience.

[0042] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0044] FIG1 is a schematic diagram of a micro-texture structure according to an embodiment of the present application;

[0045] FIG2 is a schematic diagram of a structural layer according to an embodiment of the present application;

[0046] FIG3 is a schematic diagram of another structural layer according to an embodiment of the present application;

[0047] FIG4 is a schematic diagram of the working principle of the micro-texture structure according to an embodiment of the present application

[0048] FIG5 is a schematic diagram of a graphic layer according to an embodiment of the present application;

[0049] FIG6 is a schematic diagram of a graphics unit according to an embodiment of the present application;

[0050] FIG7 is a schematic diagram of a three-dimensional image formed according to an embodiment of the present application;

[0051] FIG8 is a schematic diagram of another micro-texture structure according to an embodiment of the present application;

[0052] FIG9 is a flow chart of a method for preparing a micro-texture structure according to an embodiment of the present application;

[0053] FIG. 10 is a flow chart of another method for preparing a micro-texture structure according to an embodiment of the present application.

[0054] Reference numerals: 100: transparent carrier layer; 100a: first side; 100b: second side; 200: structural layer; 210: lens array; 201: lens; 300: graphic layer; 310: graphic unit array; 301: graphic unit; 301a: annular pattern layer; 400: three-dimensional image. DETAILED DESCRIPTION

[0055] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0056] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly refer to one or more of the features. Throughout the description of this application, unless otherwise specified, "plurality" means two or more. Furthermore, "and / or" in the specification and claims refers to at least one of the connected entities, and the character " / " generally indicates an "or" relationship between the connected entities.

[0057] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0058] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0059] The micro-texture structure, the product having the micro-texture structure and the method for preparing the micro-texture structure provided in the embodiments of the present application are described in detail below with reference to specific embodiments and their application scenarios in conjunction with the accompanying drawings.

[0060] As shown in Figures 1 to 7, the micro-texture structure according to some embodiments of the present application includes a transparent carrier layer 100, a structural layer 200 and a graphic layer 300. The transparent carrier layer 100 includes a first side 100a and a second side 100b arranged opposite to each other; the structural layer 200 is arranged on the first side 100a, and a lens array 210 is provided in the structural layer 200; the graphic layer 300 is arranged on the second side 100b, and a graphic unit array 310 is provided in the graphic layer 300. At least some of the graphic units 301 in the graphic unit array 310 include a plurality of mutually nested annular pattern layers 301a, and the graphic unit array 310 forms a three-dimensional image 400 after being projected by the lens array 210.

[0061] In an embodiment of the present application, a structural layer 200 is provided on the first side 100a of the transparent carrying layer 100, and a graphic layer 300 is provided on the second side 100b of the transparent carrying layer 100. A lens array 210 is provided in the structural layer 200, and a graphic unit array 310 is provided in the graphic unit array 300. At least part of the graphic units 301 in the graphic unit array 310 include a plurality of mutually nested annular pattern layers 301a. The graphic units 301 composed of the annular pattern layers 301a can form a part of a three-dimensional image 400 after being projected by the corresponding lens 201. Then, the graphic unit array 310 can form a complete three-dimensional image 400 after being projected by the lens array 210. The three-dimensional image 400 can present a three-dimensional suspension effect, thereby greatly enhancing the user's visual experience.

[0062] Specifically, the structural layer 200 and the graphic layer 300 are disposed on either side of the transparent carrier layer 100. The structural layer 200 includes a plurality of lenses 201 arranged in an array to form a lens array 210. The lenses 201 can be arranged in a rectangular array or a hexagonal array.

[0063] In some embodiments, the lens 201 may include an optical structural unit capable of imaging, such as a circular lens, an aspheric lens, a Fresnel lens, a cylindrical lens, etc. Of course, the lens 201 may also use other types of optical structural units, which is not limited in this embodiment of the present application.

[0064] In some embodiments, the transparent carrier layer 100 can be made of transparent materials such as polycarbonate (PC), polyethylene terephthalate (PET), and polyimide (PI). Of course, the transparent carrier layer 100 can also be made of other transparent materials, which is not limited in the embodiments of the present application.

[0065] In some embodiments, the thickness of the transparent carrier layer 100 is 0.01 mm to 5 mm. Specifically, the thickness of the transparent carrier layer 100 can be set to any number or a range between any two values, such as 0.01 mm, 0.05 mm, 0.1 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 1 mm, 3 mm, or 5 mm.

[0066] By setting the transparent supporting layer 100 within a reasonable thickness range, it is possible to ensure that the transparent supporting layer 100 has a certain mechanical strength to perform a supporting function, while also preventing the transparent supporting layer 100 from being too thick and affecting the transmission effect of light in the transparent supporting layer 100.

[0067] Specifically, the graphic layer 300 located on the second side 100b of the transparent carrier layer 100 includes a plurality of graphic units 301 arranged in an array to form a graphic unit array 310. At least some of the graphic units 301 are formed by nesting a plurality of annular pattern layers 301a. The annular pattern layers 301a in the graphic units 301, when projected through corresponding lenses 201, can form a portion of a three-dimensional image 400. Furthermore, the graphic units 301 in the entire graphic unit array 310, when projected through corresponding lenses 201, can form a complete three-dimensional graphic. The resulting three-dimensional graphic can exhibit a three-dimensional floating effect.

[0068] In the embodiment of the present application, as shown in FIG. 5 and FIG. 6 , the plurality of annular pattern layers 301 a in the graphic unit 310 are sequentially arranged from the inside to the outside, and there is at least a partial gap between two adjacent annular pattern layers 301 a.

[0069] In the embodiment of the present application, a plurality of annular pattern layers 301a are arranged in sequence from the inside to the outside, and there is at least a partial gap between two adjacent annular pattern layers 301a. In this way, the annular pattern layer 301a of the two-dimensional structure can form a part of the three-dimensional stereoscopic image after being projected by the corresponding lens 201. Furthermore, the annular pattern layers 301a in the multiple graphic units 301 are projected by the corresponding lens 201 to form a three-dimensional image 400 with a three-dimensional suspension effect.

[0070] It is understandable that, as shown in FIG. 6 , in the pattern unit array 310 , the structures of the annular pattern layers 301 a included in different pattern units 301 may be the same or different.

[0071] In some embodiments, the plurality of annular pattern layers 301a comprising the graphic unit 301 may include circular rings, elliptical rings, polygonal rings, or irregular annular structures formed by a combination of straight lines and / or curves. The shape and structure of the annular pattern layers 301a in the graphic unit 301 may be configured to correspond to the desired three-dimensional image 400 to be projected, and this embodiment of the present application is not limited thereto.

[0072] In the embodiment of the present application, as shown in FIG. 1 , the graphic unit array 310 corresponds to the lens array 210 in position, and the period of the graphic unit array 310 is the same as the period of the lens array 210 .

[0073] In an embodiment of the present application, the graphic unit array 310 is set to correspond to the position of the lens array 210, and the period of the graphic unit array 310 is the same as the period of the position of the lens array 210, so that the graphic unit array 310 can form a clear and complete three-dimensional image 400 after being projected by the lens array 210.

[0074] It should be noted that the term "same" means that the two are completely equal or the difference between the two is within a preset range.

[0075] In the embodiment of the present application, as shown in FIG. 2 and FIG. 3 , the period of the lens array 210 is set to 5 μm-5 mm.

[0076] It is understood that if the period of the lens array 210 is too large, it will interfere with the formed three-dimensional image 400 and affect the visual effect. At the same time, if the period of the lens array 210 is too small, high processing precision is required when processing the lens array 210, which is not convenient for actual processing. Therefore, by setting a reasonable period range for the lens array 210, actual processing and manufacturing can be facilitated while improving the visual effect.

[0077] Specifically, the period of the lens array 210 can be set to any value such as 5μm, 10μm, 50μm, 60μm, 70μm, 80μm, 100μm, 130μm, 150μm, 300μm, 500μm, 1mm, 2mm, 5mm, or a range between any two values.

[0078] It should be noted that the period size of the lens array can be determined according to the overall size of the micro-texture structure. When the overall size of the micro-texture structure is large, the period of the lens array can be increased relatively; and when the overall size of the micro-texture structure is small, the period of the lens array can be reduced relatively. In actual use, the period of the lens array can be flexibly set according to the overall size of the micro-texture structure, and there is no restriction on this. In some embodiments, the period of the lens array 210 can be set to 5μm-300μm. When the period of the lens array 210 is large, the lens array 210 is distributed in a point-like manner when observed by the human eye, which will cause certain interference with the three-dimensional image 400. Therefore, by setting the period of the lens array 210 within a smaller period range, it is not easy for the human eye to observe the microlens array 210, thereby further improving the visual effect.

[0079] It is understandable that the period of the graphic unit array 310 is the same as or similar to the period of the lens array 210 , and the period of the graphic unit array 310 can be set according to the period of the lens array 210 .

[0080] In some embodiments, at least some of the lenses 201 in the lens array 210 have the same focal length.

[0081] In the embodiment of the present application, by setting the focal lengths of at least some of the lenses 201 in the lens array 210 to be equal, the three-dimensional image 400 projected by the lens array 210 is clearer and more accurate, thereby improving the visual effect.

[0082] It is understandable that if the focal length of a local lens 201 in the lens array 210 is not equal to the focal length of other lenses 201 , there will be differences in the clarity of the resulting images, resulting in local unclearness in the final three-dimensional image 400 .

[0083] It should be noted that the focal length of the lens 201 in the lens array 210 can be set according to actual needs, and this embodiment of the present application does not limit this.

[0084] In an embodiment of the present application, as shown in FIG4 , the focal points of at least some of the lenses 201 in the lens array 210 are located in the same plane; and / or the vertices of at least some of the lenses 201 in the lens array 210 are located in the same plane.

[0085] In an embodiment of the present application, by setting the focal points of at least some of the lenses 201 in the lens array 210 to be in the same plane, and / or setting the vertices of at least some of the lenses 201 in the lens array 210 to be in the same plane, it is ensured that the focal lengths of at least some of the lenses 201 in the lens array 210 are equal or similar, and thus the three-dimensional image 400 projected by the lens array 210 is clearer and more accurate.

[0086] In the embodiment of the present application, as shown in FIG. 4 , pattern points on the annular pattern layer 301 a are projected by at least one lens 201 in the lens array 210 to form image points in a three-dimensional image 400 .

[0087] In the embodiment of the present application, by providing a plurality of lenses 201 arranged in an array in the structural layer 200, the pattern points on the annular pattern layer 301a of the graphic units 301 can be projected through at least one lens 201 to form image points in the three-dimensional image 400. Furthermore, when all the graphic units 301 are projected by the corresponding lenses 201, a complete three-dimensional image 400 with a three-dimensional floating effect can be formed.

[0088] It is understood that in practical applications, lens 201 can employ either reflective or refractive imaging. As shown in FIG1 , lens 201 is positioned to project from structural layer 200 toward and away from image layer 300. Based on the reflective imaging principle of lens 201 , graphic elements 301 in image layer 300 are reflected by lens 201 to form a three-dimensional image on the side of the micro-texture structure closest to image layer 300.

[0089] As shown in FIG8 , the lens 201 is arranged to be recessed from the structural layer 200 toward the graphic layer 300 . Based on the refraction imaging principle of the lens 201 , the graphic units 301 in the graphic layer 300 can form a three-dimensional stereoscopic image on the side of the micro-texture structure close to the structural layer 200 after being refracted by the lens 201 .

[0090] It should be noted that the embodiment of the present application uses the reflective imaging of the lens 201 as an example for explanation. When the lens 201 adopts refractive imaging, its working mechanism is the same as or similar to the mechanism of reflective molding, and adaptive adjustments can be made. This application will not go into details here.

[0091] In the embodiment of the present application, as shown in FIG4 , a reference plane is defined passing through the vertex of the lens 201 and is parallel to the plane where the image layer 300 is located. A point O in the reference plane P is taken as the coordinate origin (0, 0, 0). The coordinates of the pattern point Ti in the annular pattern layer 301 a are (xOti, yOti, h0), the coordinates of the projection point Oti on the lens 201 corresponding to the pattern point Ti are (xOti, yOti, hc), the coordinates of the focus Om of the lens 201 are (xOm, yOm, F), and the coordinates of the image point ti in the formed three-dimensional image 400 are (xti, yti, hti), which satisfies the following formula:

[0092] Among them, h0 is the height of the annular pattern layer 301a from the reference plane, hti is the height of the image point from the reference plane, F is the focal length of the lens 201, hc is the height of the projection point from the reference plane, and n is the equivalent refractive index of the transparent supporting layer 100 and the structural layer 200.

[0093] In a specific application, once the structure of the three-dimensional image 400 to be formed is determined, the coordinate information of the graphic unit array 310 can be calculated based on the coordinate information of the three-dimensional image 400 and the optical parameters of the lens array 210 according to the above formulas (1) and (2), and the corresponding graphic layer 300 structure can be processed. In this way, the structure of the graphic layer 300 can be flexibly designed according to the actual desired three-dimensional image effect to meet the application requirements of different scenarios.

[0094] Specifically, at least some of the graphic units 301 in the graphic layer 300 are composed of a plurality of nested annular pattern layers 301a. The annular pattern layers 301a are projected by the lens array 210 to form a portion of the three-dimensional image 400. The imaging mechanism is as follows:

[0095] As shown in Figure 4 , assume that the apex of each lens 201 in lens array 210 lies on the same plane P, and the focal point Om of each lens 201 lies on the same plane Pf. Furthermore, a spatial model can be designed, assuming that the resulting three-dimensional image 400 is suspended above the side of the microtexture structure close to the image layer 300, with the vertical distance H between the highest point of the three-dimensional image 400 and plane P being the reference plane. A point O on reference plane P is selected as the coordinate origin (0, 0, 0).

[0096] Based on the lens reflection imaging principle, the annular pattern layer 301a in each graphic unit 301 can be regarded as a point set T composed of countless points, and the three-dimensional image 400 formed can be regarded as a point set t composed of countless points, wherein point T1 in the graphic unit 301 is reflected by the lens 201 to form point t1 in space, and point T2 in the graphic unit 301 is reflected by the lens 201 to form point t2 in space.

[0097] Furthermore, based on the reversibility of light, the spatial coordinate information of each point in the point set t can be obtained. For example, a point t1 (xt1, yt1, ht1) in the point set t is taken. After being refracted by the transparent carrier layer 100, point t1 falls on the target lens 201 and intersects the curved surface of lens 201. Then, after being refracted by the transparent carrier layer 100, point t1 passes through the focus Om (xOm, yOm, F) of lens 201 and falls on the curved surface of lens 201 at the projection point ot1 (xot1, yot1, hc). After being vertically reflected from point ot1, it intersects the plane of the image layer 300 at point T1. Here, ht1 is the vertical distance from point t1 to plane P, F is the focal length of lens 201, and hc is the vertical distance from the projection point ot1 to plane P.

[0098] Combining the above formulas (1) and (2), the coordinate value between point T1 of the image layer 300 and point t1 in the three-dimensional image 400 is calculated as follows:

[0099] Therefore, according to the above formulas (3) and (4), once the coordinates of the image point t1 in the three-dimensional image 400 to be formed are determined, the coordinates of the corresponding pattern point T1 in the image layer 300 can be calculated.

[0100] It should be noted that the parameters ht0, hc, and hti in the above formula are the vertical distances from the corresponding points to the reference plane, which can be measured using a measurement tool or calculated based on design parameters. The parameters F and n in the above formula can be determined based on the design performance of the lens array and the transparent carrier layer.

[0101] Correspondingly, if a point in the point set t does not fall on the target lens 201 after being refracted by the transparent carrier layer 100, the graphic unit 301 corresponding to the point is a blank area. In this way, the point set t of the three-dimensional image 400 is projected into the corresponding graphic layer 300 through the target lens 201 to form a number of mutually nested annular pattern layers 301a.

[0102] Similarly, based on the point set t of the three-dimensional image 400, the coordinate information of the point set T of the pattern points projected onto the image layer 300 by each lens 201 in the lens array 210 can be calculated, and finally the structure of the graphic unit array 310 in the image layer 300 can be determined.

[0103] In addition, as shown in FIG4 , in the three-dimensional image formed by the point set t, each point has a different height and position, and there is a height difference and a distance difference between any two points. For example, there is a height difference △h and a distance difference △dis between point t1 and point t2 in the figure. Correspondingly, there is a distance difference △tdis between point T1 and point T2 projected onto the image layer 300 through the target lens 201. Therefore, the point set T is distributed in a ring shape in the image layer 300.

[0104] It is understandable that the height differences and distance differences between different points in the point set t of the three-dimensional image 400 are different, and the positions of the projection lens 201 are different. Therefore, the shape structure of the annular pattern layer 301a corresponding to the graphic unit 301 in the graphic unit array 310 will also be different.

[0105] In the embodiment of the present application, as shown in FIG1 , the lens 201 is a protrusion protruding from the structural layer 200 , and along the thickness direction of the structural layer 200 , the height H of the protrusion satisfies: 1 μm≤H≤2 mm.

[0106] It can be understood that since the focal length of the lens 201 is related to the height, diameter and arc shape of the protrusion, when the diameter and arc shape of the protrusion are determined, the focal length of the lens 201 can be changed by changing the height of the protrusion. Therefore, in the embodiment of the present application, the focal length of the lens 201 is controlled within a certain range by setting the height of the protrusion within a reasonable value range.

[0107] Specifically, the height H of the protrusion can be set to any value such as 1μm, 5μm, 6μm, 7μm, 8μm, 10μm, 11μm, 13μm, 15μm, 20μm, 50μm, 100μm, 500μm, 1mm, 2mm, or a range between any two values.

[0108] An embodiment of the present application further provides a product with a micro-texture structure, comprising a product body and the micro-texture structure of the above embodiment, wherein the micro-texture structure is provided on the surface of the product body.

[0109] In an embodiment of the present application, a micro-texture structure is provided on the surface of the product body, and the micro-texture structure includes a transparent supporting layer 100, a structural layer 200 is provided on the first side 100a of the transparent supporting layer 100, and a graphic layer 300 is provided on the second side 100b of the transparent supporting layer 100. A lens array 210 is provided in the structural layer 200, and a graphic unit array 310 is provided in the graphic unit array 300. At least some of the graphic units 301 in the graphic unit array 310 include a plurality of mutually nested annular pattern layers 301a. The graphic units 301 composed of the annular pattern layers 301a can form a part of a three-dimensional image 400 after being projected by the corresponding lenses 201. Then, the graphic unit array 310 can form a complete three-dimensional image 400 after being projected by the lens array 210. The three-dimensional image 400 can present a three-dimensional suspension effect, thereby greatly enhancing the user's visual experience.

[0110] Specifically, the product in the embodiment of the present application may be a sheet product, a glass product, etc., and a micro-texture structure is provided on the product body so that the surface of the product presents a three-dimensional effect.

[0111] An embodiment of the present application further provides a shell, comprising a shell body and the micro-texture structure in the above embodiment, wherein the micro-texture structure is provided on the shell body.

[0112] In the embodiment of the present application, the housing body can be used to connect with other components to play a protective and decorative role, etc. The structure of the housing and the specific application scenario can be set according to actual needs and are not limited here.

[0113] An embodiment of the present application further provides an electronic device, comprising a device body and the micro-texture structure in the above embodiment, wherein the micro-texture structure is provided on the device body.

[0114] In the embodiments of the present application, electronic devices include but are not limited to: vehicles, aircraft, wearable devices, gaming devices, mobile phones, tablet computers, laptop computers, PDAs, smart watches, and pedometers.

[0115] The present application also provides a method for preparing a micro-texture structure, which is used to prepare the micro-texture structure in the above embodiment. The preparation method specifically includes the following steps:

[0116] Step 101 : forming a structure layer 200 having a lens array 210 on a first side 100 a of a transparent carrier layer 100 .

[0117] Specifically, the transparent carrier layer 100 can be made of a transparent material, such as a transparent film, transparent glass, or other transparent material layer. The transparent carrier layer 100 includes a first side 100a and a second side 100b opposite to each other. A structural layer 200 having a lens array 210 is formed on the surface of the first side 100a of the transparent carrier layer 100. The lens array 210 includes a plurality of lenses 201 arranged in an array.

[0118] The lenses 201 may be arranged in a rectangular array, a hexagonal array, or other array arrangements.

[0119] Step 102: Form a graphic layer 300 on the second side 100b of the transparent carrier layer 100. The graphic layer 300 includes a graphic unit array 310. At least some of the graphic units 301 in the graphic unit array 310 include a plurality of annular pattern layers 301a nested with each other. The graphic unit array 310 is projected through the lens array 210 to form a three-dimensional image 400.

[0120] Specifically, a graphic layer 300 is formed on the second side 100b of the transparent carrier layer 100, and the graphic layer 300 includes a graphic unit array 310, so that the number and position of the graphic units 301 in the graphic unit array 310 correspond to the number and position of the lenses 201 in the lens array 210, so that each graphic unit 301 can form a part of the three-dimensional image 400 after being projected by the corresponding lens 201, and then the graphic unit array 310 can form a complete three-dimensional image 400 with a stereoscopic effect after being projected by the lens array 210.

[0121] In the embodiment of the present application, a structural layer 200 having a lens array 210 is formed on the first side 100a of the transparent carrier layer 100, and a graphic layer 300 having a graphic unit array 310 is formed on the second side 100b of the transparent carrier layer 100. At least some of the graphic units 301 in the graphic unit array 310 include a plurality of nested annular pattern layers 301a. Thus, the graphic units 301 composed of the annular pattern layers 301a can form a portion of a three-dimensional image 400 after being projected by corresponding lenses 201. Furthermore, the graphic unit array 310 can form a complete three-dimensional image 400 after being projected by the lens array 210. This three-dimensional image 400 can exhibit a three-dimensional floating effect, thereby significantly enhancing the user's visual experience.

[0122] In the embodiment of the present application, step 101 of forming a structure layer 200 having a lens array 210 on the first side 100a of the transparent carrier layer 100 may include:

[0123] Step 1011: determine the structure of the lens array 210;

[0124] Step 1012: obtaining a preset mold based on the structure of the lens array 210;

[0125] Step 1013 : Using the preset mold, form the structural layer 200 on the first side 100 a of the transparent supporting layer 100 .

[0126] In the embodiment of the present application, the structure of the lens array 210 can be determined according to actual design requirements. Based on the structure of the lens array 210, a predetermined mold is obtained by laser direct writing, mechanical processing, etc. Then, the predetermined mold is used to form the structural layer 200 on the first side 100a of the transparent carrier layer 100 by UV transfer, nanoimprinting, hot pressing, etc.

[0127] When preparing the structural layer 200 , a preset positioning point can also be obtained by processing, so that in subsequent processing, the positioning point can be used as a reference point to improve processing accuracy.

[0128] In the embodiment of the present application, forming the graphic layer 300 on the second side 100b of the transparent carrier layer 100 in step 102 may include:

[0129] 1021. Based on the three-dimensional image 400 to be projected, determine the coordinate information of the image points corresponding to the three-dimensional image 400;

[0130] 1022. Obtaining pattern point coordinate information corresponding to the graphic unit 301 by calculation based on the image point coordinate information and the optical parameters of the lens 201;

[0131] 1023 . Form the graphic unit array 310 on the second side 100 b of the transparent carrier layer 100 based on the pattern point coordinate information.

[0132] Specifically, according to the three-dimensional image 400 to be projected, the image point coordinate information of the point set t constituting the three-dimensional image 400 can be determined, and the optical parameters of the lens 201 in the structural layer 200 can be determined, wherein the optical parameters at least include: the focal coordinate information of the lens 201 and the coordinate information of the projection point on the lens 201.

[0133] Then, based on the aforementioned formulas (1) and (2), the coordinate information of the point set T of the pattern points in the graphic layer 300 corresponding to the point set t of the three-dimensional image 400 can be calculated. Furthermore, based on the obtained pattern point coordinate information, the graphic unit array 310 is formed on the second side 100b of the transparent carrier layer 100.

[0134] It should be noted that the calculation principle of obtaining the coordinate information of the point set T of the annular pattern layer 301a from the coordinate information of the point set t of the three-dimensional image 400 can be found in the above content, and will not be repeated in this embodiment of the present application.

[0135] In the embodiment of the present application, step 1023 forms the graphic unit array 310 on the second side 100b of the transparent carrier layer 100 based on the pattern point coordinate information, including:

[0136] S1, forming a film layer on the surface of the second side 100b of the transparent supporting layer 100;

[0137] S2. Processing the film layer based on the pattern point coordinate information to obtain the graphic unit array 310.

[0138] Specifically, a film layer, such as a metal chromium film layer, can be formed on the surface of the second side 100b of the transparent carrier layer 100 by spraying, printing, pasting, or coating. Then, a photoresist is coated on the film surface. Based on the calculated pattern point coordinate information, laser direct writing or film exposure is performed, and the pattern units 301 are exposed and developed, thereby forming a graphic layer 300 including a graphic unit array 310 on the second side 100b of the transparent carrier layer 100.

[0139] In other embodiments, dry etching or wet etching processes may be used to etch grooves matching the graphic units 301 on the surface of the second side 100b of the transparent carrier layer 100 based on the pattern point coordinate information obtained in step 1022. Then, the graphic layer 300 including the graphic unit array 310 is obtained by coating or filling with ink.

[0140] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0141] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A micro texture structure, characterized in that: include: A transparent supporting layer (100), the transparent supporting layer (100) comprising a first side (100a) and a second side (100b) arranged opposite to each other; a structural layer (200), the structural layer (200) being arranged on the first side (100a), and a lens array (210) being arranged in the structural layer (200); and A graphic layer (300) is provided on the second side (100b), a graphic unit array (310) is provided in the graphic layer (300), at least part of the graphic units (301) in the graphic unit array (310) include a plurality of mutually nested annular pattern layers (301a), and the graphic unit array (310) forms a three-dimensional image (400) after being projected by the lens array (210).

2. The micro-texture structure according to claim 1, characterized in that: The plurality of annular pattern layers (301a) in the graphic unit (301) are sequentially arranged around and around from the inside to the outside, and a gap exists at least partially between two adjacent annular pattern layers (301a).

3. The microtexture structure according to claim 1 or 2, characterized in that: The graphic unit array (310) corresponds to the position of the lens array (210), and the period of the graphic unit array (310) is the same as the period of the position of the lens array (210).

4. The micro-texture structure according to claim 3, characterized in that: The period of the lens array (210) is 5 μm-5 mm.

5. The microtexture structure according to any one of claims 1 to 4, characterized in that: The pattern points on the annular pattern layer (301a) are projected through at least one lens (201) in the lens array (210) to form image points in the three-dimensional image (400).

6. The micro-texture structure according to claim 5, characterized in that: A reference plane is defined to pass through the vertex of the lens (201), and the reference plane is parallel to the plane where the graphic layer (300) is located. A point in the reference plane is taken as the coordinate origin (0, 0, 0). The coordinates of the pattern point are (xOti, yOti, h0). The coordinates of the projection point on the lens (201) corresponding to the pattern point are (xOti, yOti, hc). The coordinates of the focus of the lens (201) are (xOm, yOm, F). The coordinates of the image point are (xti, yti, hti), and the following formula is satisfied: Wherein, h0 is the height of the annular pattern layer (301a) from the reference plane, hti is the height of the image point from the reference plane, F is the focal length of the lens (201), hc is the height of the projection point from the reference plane, and n is the equivalent refractive index of the transparent bearing layer (100) and the structural layer (200).

7. The microtexture structure according to any one of claims 1 to 6, characterized in that: The focal lengths of at least some of the lenses (201) in the lens array (210) are equal.

8. The microtexture structure according to any one of claims 1 to 7, characterized in that: The focal points of at least some of the lenses (201) in the lens array (210) are located in the same plane; And / or, the vertices of at least some of the lenses (201) in the lens array (210) are located in the same plane.

9. The microtexture structure according to any one of claims 1 to 8, characterized in that: The thickness of the transparent bearing layer (100) is 0.01 mm-5 mm.

10. The microtexture structure according to any one of claims 1 to 9, characterized in that: The lenses (201) in the lens array (210) are protrusions protruding from the structural layer (200), and along the thickness direction of the structural layer (200), the height H of the protrusions satisfies: 1 μm≤H≤2 mm.

11. The microtexture structure according to any one of claims 1 to 10, characterized in that: The preparation method of the micro-texture structure comprises: Forming a structural layer (200) having a lens array (210) on a first side (100a) of a transparent supporting layer (100); A graphic layer (300) is formed on the second side (100b) of the transparent carrier layer (100), a graphic unit array (310) is provided in the graphic layer (300), at least part of the graphic units (301) in the graphic unit array (310) include a plurality of mutually nested annular pattern layers (301a), and the graphic unit array (310) forms a three-dimensional image (400) after being projected by the lens array (210).

12. The micro-texture structure according to claim 11, characterized in that: The structural layer (200) having a lens array (210) is formed on the first side (100a) of the transparent supporting layer (100), comprising: Determining the structure of the lens array (210); Obtaining a preset mold based on structural processing of the lens array (210); The structure layer (200) is formed on the first side (100a) of the transparent supporting layer (100) using the preset mold.

13. The microtexture structure according to claim 11 or 12, characterized in that: The step of forming a graphic layer (300) on the second side (100b) of the transparent carrier layer (100) comprises: Based on a three-dimensional image (400) to be projected, determining image point coordinate information corresponding to the three-dimensional image (400); Calculating the pattern point coordinate information corresponding to the graphic unit (301) according to the image point coordinate information and the optical parameters of the lens (201); The graphic unit array (310) is formed by processing on the second side (100b) of the transparent carrier layer (100) based on the pattern point coordinate information.

14. The micro-texture structure according to claim 13, characterized in that: The method of forming the graphic unit array (310) on the second side (100b) of the transparent carrier layer (100) based on the pattern point coordinate information comprises: forming a film layer on the surface of the second side (100b) of the transparent supporting layer (100); The film layer is processed based on the pattern point coordinate information to obtain the graphic unit array (310).

15. A product, characterized in that It comprises a product body, and the micro-texture structure according to any one of claims 1 to 14, wherein the micro-texture structure is arranged on the surface of the product body.

16. A housing, characterized in that: It comprises a shell body, and the micro-texture structure according to any one of claims 1 to 14, wherein the micro-texture structure is arranged on the shell body.

17. An electronic device, characterized in that: It comprises a device body, and the micro-texture structure according to any one of claims 1 to 14, wherein the micro-texture structure is arranged on the device body.

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