CN112505805A

CN112505805A - Imaging film and electronic equipment shell

Info

Publication number: CN112505805A
Application number: CN201910791691.4A
Authority: CN
Inventors: 刘立冬; 宋忠阳; 包卫英; 游伟
Original assignee: Shine Optoelectronics Kunshan Co Ltd
Current assignee: Shine Optoelectronics Kunshan Co Ltd
Priority date: 2019-08-26
Filing date: 2019-08-26
Publication date: 2021-03-16

Abstract

The invention relates to the technical field of optical films, in particular to an imaging film and an electronic equipment shell. The imaging film comprises a body, wherein the body is provided with two opposite sides, a focusing layer is formed on one side, an image-text layer is formed on the other side, and the image-text layer comprises a plurality of micro images and texts; the reflectivity of the micro graph-text is not less than 5%, and the graph-text layer is matched with the focusing layer so as to form an image through the focusing layer. The reflectivity of the micro-image-text of the image-text layer of the imaging film is not less than 5%, so that the imaging brightness of the imaging film is improved, and the user experience is improved.

Description

Imaging film and electronic equipment shell

Technical Field

The invention relates to the technical field of optical films, in particular to an imaging film and an electronic equipment shell.

Background

Moir technology is an attractive new type of visual security technology. The method utilizes the focusing effect of the micro-lens array to amplify the micro-pattern with high efficiency, and realizes the pattern with certain depth of field and peculiar dynamic effect.

In the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art: the brightness of the image formed by the image-text unit in the imaging film in the prior art is usually not bright enough, which directly affects the imaging effect of the imaging film and the user experience.

Therefore, there is a need for an imaging film and an electronic device housing to solve the above problems.

Disclosure of Invention

The invention provides an imaging film and an electronic equipment shell, which are used for improving the imaging brightness of the imaging film.

The invention provides an imaging film, which comprises a body, wherein the body is provided with two opposite sides, a focusing layer is formed on one side, an image-text layer is formed on the other side, and the image-text layer comprises a plurality of micro images and texts;

the reflectivity of the micro graph-text is not less than 5%, and the graph-text layer is matched with the focusing layer so as to form an image through the focusing layer.

Preferably, the micro-pattern is formed by a plating method.

Preferably, the micro image-text comprises a groove structure, the groove structure is filled with fillers, and the fillers are filled in the groove in a coating mode.

Preferably, the micro-image-text comprises a convex structure, and the convex structure is formed by a coating mode.

Preferably, the coating manner comprises chemical coating and/or physical coating. Preferably, a film coating layer is arranged on the surface of the micro graph-text.

Preferably, the micro-image-text comprises a groove structure and/or a protrusion structure, and the coating layer is arranged on the inner surface of the groove structure and/or the outer surface of the protrusion structure.

Preferably, the groove structure is filled with filler, and the coating layer is arranged on the outer surface of the filler.

Preferably, the forming mode of the coating layer comprises chemical coating and/or physical coating.

Preferably, there is a gradual change in each of the microimages and/or in the distribution of the microimages in the image-text layer.

Preferably, the coating layer of each micro graph-text has gradual change and/or the coating layers of a plurality of micro graph-texts have gradual change in distribution in the graph-text layer.

Preferably, the type of the gradual change includes one or more of a gradual change of color, a gradual change of gray scale, a gradual change of transmittance, a gradual change of reflectance, and a gradual change of brightness.

Preferably, the focusing layer has a plurality of focusing elements, and the focusing elements are adapted to the microimages.

Preferably, the focusing unit is one or more of a cylindrical mirror, a micro lens and a fresnel lens.

Preferably, the adjacent two focusing units are arranged without space or with space.

Preferably, the focusing layer and the image-text layer are made of one or more polymers respectively.

Preferably, the body further comprises a spacing layer, and the focusing layer and the image-text layer are respectively arranged on two sides of the spacing layer.

Preferably, the spacer layer and the focusing layer are made of one or more polymers, respectively, and the spacer layer and the image-text layer are made of one or more polymers, respectively.

An electronic device shell comprises a base layer and an imaging film bonded on the base layer, wherein the imaging film is the imaging film;

the imaging film also comprises a reflecting layer arranged on the focusing layer, a coloring layer arranged on the reflecting layer and an adhesive layer arranged on the image-text layer;

the imaging film is bonded on the base layer through the adhesive layer.

Has the advantages that:

the reflectivity of the micro-image-text of the image-text layer of the imaging film is not less than 5%, so that the imaging brightness of the imaging film is improved, and the user experience is improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.

Drawings

FIG. 1 is a cross-sectional view of an imaging film provided by the present invention;

FIG. 2 is yet another cross-sectional view of an imaged film provided by the present invention;

FIG. 3 is yet another cross-sectional view of an imaged film provided by the present invention;

FIG. 4 is yet another cross-sectional view of an imaged film provided by the present invention;

FIG. 5 is yet another cross-sectional view of an imaged film provided by the present invention;

FIG. 6 is yet another cross-sectional view of an imaged film provided by the present invention;

FIG. 7 is yet another cross-sectional view of an imaged film provided by the present invention;

FIG. 8 is yet another cross-sectional view of an imaged film provided by the present invention;

FIG. 9 is yet another cross-sectional view of an imaged film provided by the present invention;

FIG. 10 is yet another cross-sectional view of an imaged film provided by the present invention;

FIG. 11 is yet another cross-sectional view of an imaged film provided by the present invention;

fig. 12 is a schematic cross-sectional view of an electronic device housing provided in the present invention.

Reference numerals:

1-a focusing layer;

11-a focusing unit;

12-a fusion moiety;

2-an image-text layer;

21-a groove structure;

22-a filler;

23-raised structures;

24-coating a film layer;

3-a spacer layer;

4-a base layer;

5-an adhesive layer;

6-a reflective layer;

7-coloring layer.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, unless explicitly stated or limited otherwise, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless specified or indicated otherwise; the terms "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, integrally connected, or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it should be understood that the terms "upper" and "lower" as used in the description of the embodiments of the present invention are used in the angle shown in the drawings, and should not be construed as limiting the embodiments of the present invention. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

As shown in fig. 1 to 12, which are cross-sectional views of the imaging film provided by the present invention, respectively.

The imaging film comprises a body, wherein the body is provided with two opposite sides, a focusing layer 1 is formed on one side, an image-text layer 2 is formed on the other side, the image-text layer 2 comprises a plurality of micro images-texts, the reflectivity of the micro images-texts is not less than 5%, and the image-text layer 2 is matched with the focusing layer 1 so as to form an image through the focusing layer 1. The reflectivity of the micro-image-text of the image-text layer 2 of the imaging film is not less than 5%, so that the imaging brightness of the imaging film is improved, and the user experience is improved.

It can be understood that, in the invention, the focusing layer 1 and the image-text layer 2 are respectively arranged on two opposite sides of the body, and meanwhile, the reflectivity of the micro image-text of the image-text layer 2 is not less than 5%, so that the image formed by the image-text layer 2 through the focusing layer 1 has the effect of three-dimensional brightness enhancement by utilizing the principle of moire imaging.

Wherein, the image-text layer 2 is adapted to the focusing layer 1, specifically, the minimum unit (for example, micro-image-text) forming the image-text layer 2 is adapted to the minimum unit (for example, focusing unit 11) forming the focusing layer 1, so that it can be understood that: each micro graph and text and each focusing unit 11 are uniformly and correspondingly arranged, so that when the imaging film is cut, each cut imaging film at least comprises one complete focusing unit 11 and the micro graph and text, and further, the graph and text layer 2 can form an image through the focusing layer 1 (or the micro graph and text can pass through the focusing unit 11).

Preferably, the microimages are arranged at the focal plane of the focusing unit 11, which can be understood as: the microimages are disposed on or near the focal plane of the focusing unit 11 (i.e., within a predetermined range), so that the microimages can be imaged by the focusing unit 11, and a magnified image of the microimages can be observed during observation.

Specifically, the graphics layer 2 may include a plurality of identical or different micro-graphics, which may be graphics, text, numbers, grids, scenic pictures and/or logos that are easy to distinguish shapes. The different micrographs may be of different size, shape and/or composition, for example the first micrographs being company names and the second micrographs being company Logo.

In particular, the micrographs form images by means of the focusing elements 11, it being understood that the micrographs form images by means of the corresponding focusing elements 11. Each microimage is located in the vicinity of a corresponding focal plane in its corresponding focusing element 11, which focal plane represents the plane that passes through the focal point of the focusing element 11 and is perpendicular to the main optical axis of the focusing element 11.

In one embodiment, the micro-pattern may be formed by plating (see fig. 1, 7 and 9), so that the reflectivity of the formed micro-pattern is not less than 5%, i.e. the brightness of the micro-pattern can be increased.

Referring to fig. 1 and 7, the micrograph includes a groove structure 2 filled with a filler 22, and the filler 22 is filled in the groove structure 21 by a plating method.

In addition, referring to fig. 9, the micro-pattern includes a protrusion structure 23, and the protrusion structure 23 is formed by a plating method, so that the reflectivity of the formed micro-pattern is not less than 5%, that is, the brightness of the micro-pattern can be increased.

Specifically, the coating mode includes chemical coating and/or physical coating, wherein: the chemical plating may be, but is not limited to, electrodeposition, vapor deposition or pulsed laser deposition; physical coatings can be, but are not limited to, evaporation, sputtering, etching, masking, ion plating, or electroplating; or the combination of chemical coating and physical coating, for example, a part of the micro-pattern adopts a chemical coating mode, and the other part of the micro-pattern adopts a physical coating mode.

Another embodiment may be that the surface of the micro-image is provided with a coating layer 24 (see fig. 2 to 6, 8, 10 and 11) to form the image layer 2, so that the brightness of the image formed by the image layer 2 through the focusing layer 1 is brighter.

Wherein, referring to fig. 2, fig. 3, fig. 10 and fig. 11, the micro-pattern comprises a groove structure 21 and/or a protrusion structure 23, the groove structure 21 and/or the protrusion structure 23 form the micro-pattern, and the inner surface of the groove structure 21 and/or the outer surface of the protrusion structure 23 are provided with the coating layer 2. In this case, if the micro image-text includes the protruding structure 23, the protruding structure 23 may be formed on the surface of the body by stamping, and in order to improve the brightness of the protruding structure 23, a coating layer 24 may be disposed on the outer surface of the protruding structure 23.

In addition, referring to fig. 4 to 6 and 8, when the micro-pattern includes the groove structure 21, the groove structure 21 may be further filled with a filler 22, the groove structure 21 filled with the filler 22 forms the micro-pattern, and the coating layer 24 is disposed on an outer surface of the filler 22. That is, the micro-pattern may be the groove structure 21 and/or the protrusion structure 23, or the groove structure 21 and/or the protrusion structure 23 filled with the filler 22. It will be appreciated that the depth of the recess formation 21 is less than or equal to the thickness of the image layer 2.

Specifically, the filler 22 may be a material having a refractive index difference with respect to light from a material (e.g., a polymer) used for forming the imaging film, and may include a coloring material, a dyeing material, a metal material, a conductive material, or the like, such as ink. Preferably, the color of the filler 22 may be different from the color of the polymer so that a person can clearly discern the pattern in the micrographs when viewing the image of the micrographs.

The filling method is various, and may be printing, coating, depositing, or electroplating. When the microimages comprise a groove structure 21 filled with a filler 22, each microimage may itself have a gradient to achieve a gradient in the colour of each microimage itself or to achieve a gradient in the overall colour of a plurality of microimages. It should be noted that the micro-pattern in the present invention is not limited to the groove structure 21 filled with the filler 22, and may include the surrounding portion of the groove structure 21.

It should be noted that the micro-pattern can be formed by a plating method with a gradual change effect, and can also be formed by a plating method without a gradual change effect. Similarly, the plating layer 24 may or may not have a gradual change effect. Therefore, when the micro-image and text are formed by a coating method without a gradual change effect or the coating layer 24 does not have a gradual change effect, the micro-image and text only have the function of increasing higher brightness; on the contrary, the image-text layer 2 has the advantages of higher brightness and gradual change.

Specifically, the result of the micro-image and text adopting the film coating mode with the gradual change effect is as follows: there is a gradual change in the distribution of each of the micrographs and/or the plurality of micrographs in the layer 2.

Specifically, the gradual change of the coating layer 24 is specifically: there is a gradual change in the coating 24 of each micro-image and/or there is a gradual change in the distribution of the coating 24 of a plurality of micro-images in the image layer 2.

For example, when there is a gradual change in each microimage (or each microimage-coated layer 24), there may be a gradual change in the color of each microimage (or each microimage-coated layer 24), that is, each microimage (or each microimage-coated layer 24) exhibits a gradual change effect in a microscopic sense; when the distribution of the microimages (or the coating layers 24 of the microimages) in the image-text layer 2 is gradually changed, the distribution period and the distribution density of the microimages (or the coating layers 24 of the microimages) are gradually changed, namely the microimages (or the coating layers 24 of the microimages) show a gradual change effect in a macroscopic sense. Of course, when there is a gradual change in the distribution of the microimages (or the films 24 of the microimages) in the image-text layer 2, there may also be a gradual change in the overall color of the microimages (or the films 24 of the microimages).

Specifically, the color of each micro-image can be the same color or different colors, and the color gradient specifically means that: the color may be set from dark to light or from light to dark. The overall color of the micro-pictures and texts can be the same color or different colors, and the gradual change of the overall color specifically means that: the color and shade of a micro-image are the same, but the color or shade of each or part of the micro-image is different, so that from a macroscopic perspective, the color of the whole image-text layer 2 is gradually changed.

The gradual change type can comprise one or more of color gradual change, gray level gradual change, transmittance gradual change, reflectivity gradual change and light and shade gradual change. For example, the color changes from dark to light, from bright to dark, or from large to small in transmittance, that is, there is a change in visual effect, and there is a certain transition or buffer in the change.

It should be noted that the effect of the gradation of the image-text layer 2 may not be a single gradation effect, and may include two or more gradation effects, for example, a gradation effect in which the color changes from dark to light and a gradation effect in which the transmittance changes from small to large.

Further, the focusing layer 1 and the image-text layer 2 are made of one or more polymers, respectively. The polymer can be a single polymer or a mixed polymer formed by mixing a plurality of non-reactive single polymers. The polymer may have a light transmission of greater than 70%, or the polymer is a transparent color or visually appears transparent. The polymer may be a resin material such as PET (polyethylene terephthalate), PVC (polyvinyl chloride), PC (Polycarbonate), or PMMA (polymethyl methacrylate), or a photo-curable adhesive or a thermosetting adhesive such as uv (ultravioletrays), oca (optically curable clear adhesive).

When the polymer is a polymer, the focusing unit 11 and the micrograph can be respectively formed on two opposite sides of a body formed by the polymer, specifically, on two opposite upper and lower surfaces (for example, fig. 1 to 6), or respectively formed on the upper surface and the lower inner portion of the body (see fig. 7). In this case, the body is a polymer layer, wherein the polymer may be uniformly distributed or may be non-uniformly distributed. The focusing element 11 and the groove structure for forming the micrographs are formed in the same polymer layer so that there is no interface between the focusing layer 1 and the image layer 2, i.e. the focusing layer 1 and the image layer 2 are of one piece construction.

In the case where the polymers are two polymers, the focusing unit 11 may be formed on the upper surface of one polymer, and the micrographs may be formed on or in the lower surface of the other polymer. The adjacent portions between these two polymers form a fused portion 12 (e.g., fig. 6). The focusing layer 1 and the image-text layer 2 can thus be regarded as a one-piece structure, with no interface between the focusing element 11 and the groove structure for forming the micrographs, or with no distinct layer-to-layer boundaries or with regular, regular boundaries between the focusing element 11 and the groove structure in the cross-section of the imaged film. The fused portion may be a region where the two polymers are fused at a predetermined ratio. The preset proportion can be N: M, wherein N and M are the contents of two polymers at the joint of adjacent parts of the focusing layer 1 and the image-text layer 2 respectively, and the values of the N and M are 0-100% respectively, but not 0 and 100%. The polymer content in the focusing layer 1 is 100%; the content of the polymer in the image-text layer 2 is 100%. The adjacent portions may be contact portions between the two polymers when the two polymers are extruded by a die to form the focusing layer 1 and the image layer 2.

The focusing layer 1 can be used for imaging the image-text layer 2, the focusing layer 1 is provided with a plurality of focusing units 11, and the focusing units 11 can be one or more of cylindrical lens, micro lens and Fresnel lens. There may be no gap, i.e., no space, between the plurality of focusing units 11 (see fig. 5) in order to reduce the overall volume of the imaging film. There may also be gaps, i.e. spaced apart, between the focusing elements 11 (e.g. fig. 4) in order to ensure the integrity of the cut focusing elements 11 when cutting the imaging film, and thus ensure the subsequent imaging effect of the focusing elements 11.

It should be noted that, for the structure of the micro-pattern in fig. 7, the micro-pattern can be located inside the pattern layer 2 by forming the groove structure 21 on the surface of the polymer, then filling the groove structure 21 with the filler 22 to form the micro-pattern, and then coating the surface on which the micro-pattern is formed with the polymer; and because the two sides of the micro graph and text are the same polymer, the surface of the micro graph and text disappears due to the fusion of the polymer, and therefore an interface cannot be formed inside the graph and text layer 2.

It will be appreciated that for the case shown in fig. 7, the filler 22 may be deposited into the recess structure 21 to enhance the brightness of the micrographs.

The distance between the top of the focusing unit 11 and the top of the micro-image can be 2-150 micrometers. When the distance between the focusing unit 11 and the micrograph is small, it can be understood that the micrograph is embedded in the focusing unit 11. The smaller the distance between the focusing unit 11 and the micro-image and text is, the thinner the thickness of the imaging film is, which not only saves cost, but also is easier to cut off during hot stamping.

Referring to fig. 8 to 11, in another embodiment, the imaging film further includes a spacer layer 3. The focusing layer 1 and the image-text layer 2 are respectively positioned at two sides of the spacing layer 3 (specifically, respectively positioned at the upper side and the lower side of the spacing layer 3). The spacer layer 3 can be used to adjust the distance between the focusing layer 1 and the image-text layer 2, i.e. to adjust the focal length of the focusing unit 11. The spacer layer 3 can also serve to support the focusing layer 1 and the image-text layer 2.

In particular, the polymers used to form the focusing layer 11, the image-text layer 2 and the spacing layer 3 may be the same or different. That is, the spacer layer 3 and the focusing layer 1 are made of one or more polymers, respectively, and the spacer layer 3 and the image layer 2 are made of one or more polymers, respectively. That is, the spacer layer 3 may be made of a resin material such as PET (polyethylene terephthalate), PVC (polyvinyl chloride), PC (Polycarbonate), or PMMA (polymethyl methacrylate), or may be made of a photo-curable adhesive or a thermosetting adhesive such as uv (ultravioletrays), oca (optically clear adhesive). Wherein, the light transmittance of the spacing layer 3 can be more than 70%.

The focusing layer 1 may be directly formed on the upper surface of the spacing layer 3 or constitute an integral structure with the spacing layer 3, wherein: the end face of the focusing unit 11 may be in direct contact with the upper surface of the spacer layer 3; the end face of the focusing unit 11 may not be in direct contact with the upper surface of the spacer layer 3, i.e. there is a certain distance (e.g. fig. 10); the focusing unit 11 may also be formed directly on the spacer layer 3, in which case the focusing layer 1 and the spacer layer 3 constitute an integral structure.

The image-text layer 2 can be directly formed on the lower surface of the spacing layer 3 or form an integral structure with the spacing layer 3, wherein: the end surface of the micro graph and text 11 can be directly contacted with the lower surface of the spacing layer 3; the image-text layer 2 can also be directly formed on the spacing layer 3, at this time, the image-text layer 2 and the spacing layer 3 form an integral structure, and the micro image-text can be made of the same or different materials as the spacing layer 3.

In the preparation process, after the spacing layer 3 can be prepared, the focusing layer 1 and the image-text layer 2 are respectively prepared on the upper surface and the lower surface of the spacing layer 3; or preparing the focusing layer 1 or the image-text layer 2 at first, and then preparing the spacing layer 3 and the image-text layer 2 or the focusing layer 1 on one surface of the focusing layer in sequence. In both cases, there is an interface between the focusing layer 1 and the image and text layer 2 and the spacing layer 3 when the polymers constituting the focusing layer 1 and the image and text layer 2 are different from the polymers constituting the spacing layer 3.

In the preparation process, a focusing layer 1 and a spacing layer 3 can be respectively formed on two opposite surfaces in the same polymer; it is also possible to form the fused portion 12 between adjacent portions of the two polymers or to use the two polymers having the fused portion 12 between the adjacent portions and then form the focusing layer 1 and the spacing layer 3 on the opposite surfaces of the two polymers, respectively. For both cases, the focusing layer 1 and the spacing layer 3 form an integral structure, i.e. there is no interface between the focusing layer 1 and the spacing layer 3, and after the focusing layer 1 and the spacing layer 3 are formed, the image-text layer 2 is formed on the lower surface of the spacing layer 3.

In the preparation process, a groove structure and a spacing layer 3 can be respectively formed on two opposite surfaces of the same polymer, and the groove structure is filled with fillers to form micro-pictures and texts; it is also possible to form the fused portion 12 between adjacent portions of the two polymers or to use the two polymers having the fused portion 23 between the adjacent portions, and then to form the groove structure and the spacer layer 3 on the opposite surfaces of the two polymers, and then to fill the groove structure with the filler to form the micropattern. In both cases there is no interface between the groove structure and the spacer layer 3, i.e. the image layer 2 and the spacer layer 3 are of one piece construction. After the image-text layer 2 and the spacing layer 3 are formed, the focusing layer 1 is formed on the upper surface of the spacing layer 3.

Referring to fig. 12, the present invention further provides an electronic device case (taking an imaging film including a protruding structure 23 provided with a coating layer 24 as an example), where the electronic device case includes a base layer 4 and an imaging film bonded on the base layer 4, and the imaging film is the above-mentioned imaging film.

The electronic equipment comprises a 3C product and can also be a white appliance. For example, the electronic device is a mobile phone, an ipad, a notebook, a smart watch, an ipod, a camera, a video camera, or a smart bracelet, and the electronic device cover plate is a front cover and/or a rear cover of the mobile phone, or a front cover and/or a rear cover of a tablet computer. The electronic equipment has very good gradually-changed decorative three-dimensional effect, stable pictures and texts and lower cost.

The imaging film provided by the invention can also be used in industries such as anti-counterfeiting and packaging, and when the imaging film is used in industries such as anti-counterfeiting and packaging, the imaging film can be in a transmission type or a reflection type, and the reflection type effect film can be provided with a reflection layer 6 on one side of a focusing layer 1, so that an observation surface can be arranged on one side of an image-text layer 2, and marks such as holographic patterns, images and texts can be arranged at a blank position in the imaging film to enhance the diversification of the imaging film.

Preferably, when the imaging film is a reflective imaging film, the imaging film further comprises a reflective layer 6 disposed on the focusing layer 1, a coloring layer 7 disposed on the reflective layer 6, and an adhesive layer 5 disposed on the image-text layer 2, and the imaging film is bonded to the base layer 4 through the adhesive layer 5. Wherein, the base layer 4 can be a glass sheet, a plastic sheet or a metal sheet; the colored layer 7 may be a primer layer formed of ink; the adhesive layer 5 may be formed of OCA or other transparent jelly.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An imaging film is characterized by comprising a body, wherein the body is provided with two opposite sides, a focusing layer is formed on one side, an image-text layer is formed on the other side, and the image-text layer comprises a plurality of micro images and texts;

2. The imaging film of claim 1, wherein the microimages are formed by plating.

3. The imaging film as claimed in claim 2, wherein the micro-pattern comprises a groove structure, and the groove structure is filled with a filler, and the filler is filled in the groove structure by a coating method.

4. The imaging film of claim 2, wherein the microimages comprise raised structures formed by plating.

5. The imaging film of claim 1, wherein the surface of the microimages is coated.

6. The imaging film of claim 5, wherein the microimages comprise groove structures and/or protrusion structures, and the coating layer is disposed on the inner surface of the groove structures and/or the outer surface of the protrusion structures.

7. The imaging film of claim 6, wherein the groove structure is filled with a filler, the outer surface of which is provided with the coating layer.

8. The imaging film of claim 2, wherein there is a gradation in each of the microimages and/or a gradation in the distribution of the plurality of microimages in the image layer.

9. The imaging film of claim 6 wherein there is a gradual change in the coating layer for each of the microimages and/or a gradual change in the distribution of the coating layers for a plurality of the microimages in the image layer.

10. An imaging film according to claim 8 or 9, wherein the kind of gradation comprises one or more of gradation of color, gradation of gray scale, gradation of transmittance, gradation of reflectance, and gradation of brightness.

11. The imaging film of any one of claims 1-9, wherein the focusing layer has a plurality of focusing elements, the focusing elements being adapted to the microimages.

12. The imaging film of claim 11, wherein the focusing unit is one or more of a cylindrical lens, a micro lens and a fresnel lens.

13. The imaging film of claim 11, wherein adjacent two of the focusing units are disposed without space or with space.

14. The imaging film of any one of claims 1-9, wherein the focusing layer and the graphics layer are each made of one or more polymers.

15. The imaging film of any one of claims 1-9, wherein the body further comprises a spacer layer, and the focusing layer and the graphics layer are disposed on either side of the spacer layer.

16. The imaging film of claim 15 wherein said spacer layer and said focusing layer are each made of one or more polymers and said spacer layer and said image layer are each made of one or more polymers.

17. An electronic device housing comprising a base layer and an imaging film bonded to the base layer, the imaging film being according to any one of claims 1 to 16;

the imaging film is bonded on the base layer through the adhesive layer.