CN220626788U

CN220626788U - Transmission-reflection integrated microlens magnifying imaging film and anti-counterfeiting product

Info

Publication number: CN220626788U
Application number: CN202321660475.4U
Authority: CN
Inventors: 刘晓宁; 杨颖�; 张国勇; 任家安
Original assignee: SVG Tech Group Co Ltd
Current assignee: SVG Tech Group Co Ltd
Priority date: 2023-06-28
Filing date: 2023-06-28
Publication date: 2024-03-19
Anticipated expiration: 2033-06-28

Abstract

The application discloses a transmission and reflection integrated microlens magnifying imaging film and an anti-counterfeiting product. The microlens magnifying imaging film is of a layer structure and comprises: a base layer comprising oppositely disposed first and second planes; the first micro-lens layer comprises a plurality of first micro-lenses which are arranged on the first plane and partially cover the first plane so as to form a coverage area and a blank area on the first plane; the first image-text layer comprises a plurality of first image-text microstructures which are arranged on the second plane and correspond to the first image-text areas of the coverage area; the second image-text layer comprises a plurality of second image-text microstructures and is arranged on the second plane and corresponds to the second image-text area of the blank area; the second micro-lens layer comprises a plurality of second micro-lenses, is arranged on one side of the second image-text layer far away from the basal layer and covers the second image-text layer; and a coating layer laminated on the second microlens layer.

Description

Transmission-reflection integrated microlens magnifying imaging film and anti-counterfeiting product

Technical Field

The application relates to the technical field of materials, in particular to an integrated micro-lens magnifying imaging film with a transmission type structure and a reflection type structure, and an anti-counterfeiting product with the micro-lens magnifying imaging film.

Background

The micro lens array is formed by focusing light rays by utilizing a plurality of micro lenses arranged in an array mode so as to image an object. Generally, microlens arrays are used for imaging, and periodic array graphics are matched, so that array amplified suspension graphics can be formed. A single suspended image may also be formed using 3D integrated imaging based on microlens arrays.

Microlens array imaging typically employs a transmissive structure. Namely, the lens layer, the spacing layer, the image-text layer and the spacing layer are arranged from the observation surface, the thickness of the spacing layer can meet the focal length of the lens, the depth of field can reach about +/-10 mm, and the depth of field is not limited by the observation visual angle. If a reflective structure is adopted, namely an image-text layer, a spacing layer, a lens layer and a reflecting layer are arranged from an observation surface, the focal length is greatly shortened, and the depth of field generated by the same image-text arrangement is also reduced to about + -2mm.

The 3D integrated imaging based on the micro-lens array generally adopts a reflective structure, namely an image-text layer, a spacing layer, a lens layer and a reflecting layer from an observation surface, and the focal length is greatly shortened, so that the angle of view is larger and is not limited by the observation visual angle. If a projection type structure is adopted, namely a lens layer, a spacing layer and an image-text layer are arranged from an observation surface, the observation view angle is in the range of 10-35 degrees, and the phenomenon of image deletion and position jump of a suspended image occurs along with the change of the observation view angle.

Disclosure of Invention

The technical problem to be solved by the application is how to realize the optimal combination of the depth of field of an image and the viewing angle when the micro lens array is imaged.

In order to solve the problems, the application discloses a transmission and reflection integrated microlens magnifying imaging film and an anti-counterfeiting product.

One aspect of the present application provides a microlens magnifying imaging film. The microlens magnifying imaging film is of a layer structure and comprises: a base layer comprising oppositely disposed first and second planes; the first micro-lens layer comprises a plurality of first micro-lenses which are arranged on the first plane and partially cover the first plane so as to form a coverage area and a blank area on the first plane; the first image-text layer comprises a plurality of first image-text microstructures which are arranged on the second plane and correspond to the first image-text areas of the coverage area; the second image-text layer comprises a plurality of second image-text microstructures and is arranged on the second plane and corresponds to the second image-text area of the blank area; the second micro-lens layer comprises a plurality of second micro-lenses, is arranged on one side of the second image-text layer far away from the basal layer and covers the second image-text layer; and a coating layer laminated on the second microlens layer.

Another aspect of the present application provides another microlens magnifying imaging film. The microlens magnifying imaging film is of a layer structure and comprises: a base layer comprising oppositely disposed first and second planes; the first micro-lens layer comprises a plurality of first micro-lenses which are arranged on the first plane and partially cover the first plane so as to form a coverage area and a blank area on the first plane; the first image-text layer comprises a plurality of first image-text microstructures which are arranged on the second plane and cover the second plane; the second image-text layer comprises a plurality of second image-text microstructures, the second image-text microstructures are arranged on one side of the first image-text layer, which is far away from the basal layer, and the arrangement area corresponds to the blank area; the second micro-lens layer comprises a plurality of second micro-lenses, is arranged on one side of the second image-text layer far away from the basal layer and covers the second image-text layer; and a coating layer laminated on the second microlens layer.

Another aspect of the present application provides another transflective integrated microlens magnifying imaging film. The microlens magnifying imaging film is of a layer structure and comprises: a base layer comprising oppositely disposed first and second planes; the first micro-lens layer comprises a plurality of first micro-lenses which are arranged on the first plane and partially cover the first plane so as to form a coverage area and a blank area on the first plane; the first image-text layer comprises a plurality of first image-text microstructures which are arranged on the second plane and correspond to the first image-text areas of the coverage area; the second image-text layer comprises a plurality of second image-text microstructures which are arranged in a blank area above the first plane; the second micro-lens layer comprises a plurality of second micro-lenses, is arranged on one side of the first image-text layer far away from the basal layer and corresponds to the second image-text layer; and a coating layer laminated on the second microlens layer.

In a possible implementation manner, the coating layer may also be laminated on the first image-text layer.

In one possible implementation, the first microlens has a transmission focal length of 20-200 μm and the second microlens has a reflection focal length of 20-50 μm.

In one possible implementation, the parameters of the first and second microlenses are different, and the reflected focal length of the second microlens is equal to the sum of the transmitted focal length of the first microlens and the height of the second microlens layer.

In one possible implementation, the first microlens layer and the first image-text layer form a transmissive array amplifying dynamic effect; the second micro-lens layer, the second image-text layer and the film coating layer form a reflective single-image space suspension imaging effect

In one possible implementation, the thickness of the base layer is equal to the transmissive focal length of the first microlenses.

In one possible implementation, the material of the substrate layer includes polyethylene terephthalate, glass, polycarbonate, polymethyl methacrylate, polyimide, transparent polyimide, and UV glue.

In one possible implementation, the distance between the top of the second microlens and the second image-text microstructure is greater than the reflection focal length of the second microlens.

In one possible implementation, the first graphic microstructure and the second graphic microstructure are ink-filled graphic microstructures.

In a possible implementation, the parameters of the first and second microlenses may be the same or different.

In another aspect, the present application provides a method for preparing a microlens magnifying imaging film. The microlens magnifying imaging film is of a layer structure, and the method comprises the following steps: providing a substrate layer comprising a first plane and a second plane disposed opposite each other; the first micro-lens layer is arranged on the first plane through ultraviolet curing glue copying operation, and the first image-text layer is arranged on the second plane; the first micro-lens layer comprises a plurality of first micro-lenses and partially covers the first plane to form a coverage area and a blank area on the first plane; the first image-text layer comprises a plurality of first image-text microstructures which are arranged on the second plane and correspond to the first image-text areas of the coverage area; setting a second image-text layer on the second plane corresponding to the second image-text area of the blank area through ultraviolet curing glue copying operation, wherein the second image-text layer comprises a plurality of second image-text microstructures; a second micro-lens layer is arranged on one side of the second image-text layer far away from the basal layer through ultraviolet curing glue copying operation, and covers the second image-text layer, wherein the second micro-lens layer comprises a plurality of second micro-lenses; and coating the first microlens layer or the second microlens layer to laminate a coating layer over the second microlens layer and the second image-text layer.

Another aspect of the present application provides another method of preparing a microlens magnifying imaging film. The microlens magnifying imaging film is of a layer structure, and the method comprises the following steps: providing a substrate layer comprising a first plane and a second plane disposed opposite each other; the first micro-lens layer is arranged on the first plane through ultraviolet curing glue copying operation, and the first image-text layer is arranged on the second plane; the first micro-lens layer comprises a plurality of first micro-lenses and partially covers the first plane to form a coverage area and a blank area on the first plane; the first image-text layer comprises a plurality of first image-text microstructures which are arranged on the second plane and cover the second plane; setting a second image-text layer in a setting area corresponding to the blank area on one side of the first image-text layer far away from the substrate layer through ultraviolet curing glue copying operation; the second image-text layer comprises a plurality of second image-text microstructures; a second micro-lens layer is arranged on one side of the second image-text layer far away from the basal layer through ultraviolet curing glue copying operation, and covers the second image-text layer, wherein the second micro-lens layer comprises a plurality of second micro-lenses; and performing a coating operation on the second microlens layer to laminate a coating layer over the second microlens layer.

Another aspect of the present application provides another method of preparing a microlens magnifying imaging film. The microlens magnifying imaging film is of a layer structure, and the method comprises the following steps: providing a substrate layer comprising a first plane and a second plane disposed opposite each other; the first micro-lens layer is arranged on the first plane through ultraviolet curing glue copying operation, and the first image-text layer is arranged on the second plane; the first micro-lens layer comprises a plurality of first micro-lenses and partially covers the first plane to form a coverage area and a blank area on the first plane; the first image-text layer comprises a plurality of first image-text microstructures which are arranged on the second plane and correspond to the image-text areas of the coverage area; setting a second image-text layer on the blank area above the first plane through ultraviolet curing glue copying operation, wherein the second image-text layer comprises a plurality of second image-text microstructures; setting a second micro-lens layer on the second plane corresponding to the lens area of the blank area and corresponding to the second image-text layer through ultraviolet curing glue copying operation, wherein the second micro-lens layer comprises a plurality of second micro-lenses; and performing a coating operation on the first microlens layer or the second microlens layer to laminate a coating layer on the second microlens layer.

In another aspect, a security article is disclosed that includes a transflective integrated microlens magnifying imaging film as described above.

The microlens amplifying imaging film provided by the embodiment adopts the nested use of the double-sided lenses and combines the transmission type structure and the reflection type structure, so that the array amplifying dynamic image and the single-image suspended image can be well combined, and the optimal state of depth of field and view angle is achieved.

Drawings

The present application will be further illustrated by way of example embodiments, which will be described in detail with reference to the accompanying drawings. The embodiments are not limiting, in which like numerals represent like structures, wherein:

FIG. 1 is an exemplary schematic diagram of a microlens magnifying imaging film according to some embodiments of the present application;

FIG. 2 is another exemplary schematic diagram of a microlens magnifying imaging film according to some embodiments of the present application;

FIG. 3 is another exemplary schematic diagram of a microlens magnifying imaging film according to some embodiments of the present application;

FIG. 4 is an exemplary flow chart of a method of preparing a microlens magnifying imaging film according to some embodiments of the present application;

FIG. 5 is an exemplary flow chart of another method of preparing a microlens magnifying imaging film according to some embodiments of the present application;

fig. 6 is an exemplary flow chart of another method of preparing a microlens magnifying imaging film according to some embodiments of the present application.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

The terms "first," "second," and the like, as used herein, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" and/or "as used herein includes any and all combinations of one or more of the associated listed items.

Some embodiments of the present application are described below with reference to the accompanying drawings. It should be noted that the following description is for illustrative purposes and is not intended to limit the scope of the present application.

FIG. 1 is an exemplary schematic diagram of a microlens magnifying imaging film according to some embodiments of the present application. As shown in fig. 1, the microlens magnifying imaging film 100 may include a base layer 110, a first microlens layer 120, a first graphic layer 130, a second graphic layer 140, a second microlens layer 150, and a coating layer 160.

The base layer 110 may act as a support element for the entire microlens magnification imaging film 100 for supporting the other layers. The material of the base layer 110 may include polyethylene terephthalate (PET), glass, polycarbonate (PC), polymethyl methacrylate (PMMA), polyimide (PI), transparent polyimide (CPI), ultraviolet curing glue (UV glue), and the like. Alternatively or preferably, the substrate layer 110 may be PET. Since the microlens magnifying imaging film 100 images by means of the action of light (including transmission, reflection, etc.), the base layer 110 may be transparent. For example, the substrate layer 110 may be a transparent PET layer.

The substrate layer 110 has oppositely disposed first and second planes. For example, a first plane is located above in the vertical direction, and a second plane is located below. The first microlens layer 120 is disposed over a first plane of the base layer 110. The first microlens layer 120 may include a plurality of first microlenses in a periodic arrangement or a random arrangement. The first microlenses may be prepared using methods such as etching (e.g., photo-etching or chemical etching, etc.), replication (e.g., mold replication, etc.). For example, a resin layer may be first laid on the first plane of the base layer 110 to form a resin layer, and then the resin layer may be etched using a laser etching apparatus to remove the excess resin to form the first microlenses. Alternatively, a layer of ultraviolet curing glue (UV glue) is laid on the first plane of the substrate layer 110, and then the UV glue is subjected to imprint molding and UV curing by using a mold (e.g., a microlens array mold), so as to finally form a plurality of first microlenses. The transmission focal length of the first microlens may be 20-200 μm. For example, 20 μm, 40 μm, 60 μm, 80 μm, 100 μm, 120 μm, 140 μm, 160 μm, 180 μm, 200 μm, etc. Alternatively or preferably, the transmission focal length of the first microlens may be 100 μm. In one possible embodiment, the thickness of the base layer 110 may be the same as the transmissive focal length of the first microlenses. For example, assuming that the transmission focal length of the first microlens is 100 μm, the thickness of the base layer 110 may also be 100 μm.

The first microlens layer 120 may partially cover the first plane. As shown in fig. 1, the first microlens layer may include a coverage area 121 and a blank area 122. The blank area 122 shown in fig. 1 may be surrounded by a coverage area 121. For example, a middle portion of the first plane is not covered by the first microlens layer 120, thereby forming a blank region 122.

The first graphics layer 130 may be disposed on the second plane. For example, the first teletext layer 130 can be disposed on a first teletext region 131 on the second plane corresponding to a coverage area (e.g., coverage area 121) on the first plane. The second graphics layer 140 may also be disposed on the second plane. For example, the second teletext layer 140 can be disposed on a second plane in a second teletext region 142 corresponding to a blank region (e.g., blank region 122) on the first plane. The first graphic layer 130 may include a plurality of first graphic microstructures in a periodic arrangement or a random arrangement. For example, the arrangement of the plurality of first graphic microstructures may be the same as the arrangement of the plurality of first microlenses. That is, the two are the same in number and arrangement. The second graphic layer 140 may include a plurality of second graphic microstructures, which may also be periodically arranged or randomly arranged.

The first graphic microstructure and the second graphic microstructure may also be formed on the second plane by etching or replication, either identical or similar. For example, after a layer of resin is laid on the second plane of the substrate layer 110, the resin in the first graphic region 132 and the second graphic region 142 is etched by using a laser etching method to form a plurality of first graphic microstructures and a plurality of second graphic microstructures. For another example, a layer of UV glue is laid on the second plane of the substrate layer 110, and then the UV glue is embossed using a mold corresponding to the first graphic microstructure. For example, the portion of the mold corresponding to the first graphic region 132 has a corresponding microstructure, and the UV glue can be made to form the first graphic microstructure during imprinting. The partial blank corresponding to the second text area 142 does not imprint the UV glue. After completion, the UV glue in the second graphic region 142 may be imprinted using a mold corresponding to the second graphic microstructure. After ultraviolet curing, a corresponding first image-text microstructure and a corresponding second image-text microstructure can be formed.

The first graphic microstructure and the second graphic microstructure may be ink filled. As shown in fig. 1, the first teletext microstructure is filled with lighter colored ink and the second teletext microstructure is filled with darker colored ink. Of course, the color of the ink to be filled may be selected differently depending on the purpose. For example, the first graphic microstructure and the second graphic microstructure are filled with ink of the same color. For another example, inks of both red and blue may be selected to fill the first and second graphic microstructures. The present application is not particularly limited.

The second microlens layer 150 may be disposed at one side of the second graphic layer 140 and cover the second graphic layer 140. For example, a layer remote from the substrate layer 110. The second microlens layer 150 may include a plurality of second microlenses, and the arrangement of the plurality of second microlenses may be identical to the arrangement of the plurality of second graphic microstructures of the second graphic layer 140. The second microlenses may also be fabricated using etching or replication methods. Examples may refer to relevant portions of the first microlens.

The second microlens may have a reflection focal length of 20-50 μm. For example, 20 μm, 25 μm, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm, etc. Alternatively or preferably, the reflective focal length of the second microlens may be 20 μm. In one possible embodiment, the distance between the top of the second microlens and the second image microstructure may be greater than the reflective focal length of the second microlens. For example, when the reflective focal length of the second microlens may be 20 μm, the distance between the top of the second microlens and the second image-text microstructure may be 21 μm, 22 μm, or 20.5 μm.

The coating layer 160 may be laminated over the second microlens layer 150 and the second graphic composition 130. The plating layer 160 may be a metal film, for example, an aluminum film, a chromium film, or the like. A vacuum particle sputtering process may be used to form the coating layer 160 on the second lens layer 150 and the second image-text layer 130.

The first microlens has a transmission focal length of 100 μm and the second microlens has a reflection focal length of 20 μm. The first image-text microstructure is five-pointed star, and the filling ink is light-color ink. The effect of the second image-text microstructure combined with the second micro lens and the film coating layer is a single-image 'waving flag', and the filling ink is dark ink. The upper view is a view plane, and the first microlens array layer 120 covers an area, which is a light-colored array type enlarged dynamic image of a plurality of five-pointed star, and has a depth of field of-10 mm. The second microlens array 150 covers an area that presents a dark single suspended "flying flag" image with a depth of field of +7mm.

The first micro-lens layer and the first image-text layer form a transmission type array amplifying dynamic effect; the second micro-lens layer, the second image-text layer and the coating layer form a reflective single-image space suspension imaging effect, so that the integration of transmission type and reflection type is achieved, and the appearance of multiple effects is formed.

FIG. 2 is another exemplary schematic diagram of a microlens magnifying imaging film according to some embodiments of the present application. The microlens magnification imaging film 200 may contain the same elements as the microlens magnification imaging film 100, except for the arrangement between the elements. As shown in fig. 2, the arrangement of the base layer 110 and the first microlens layer 120 is not different from that in fig. 1. For example, the substrate layer 110 also has oppositely disposed first and second planes. The first microlens layer 120 includes a plurality of first microlenses disposed on a first plane in an etched or replicated manner, also forming a coverage area and a blank area. The thickness of the base layer 110 is also the same as the transmission focal length of the first microlenses of the first microlens layer 120. The first teletext layer 130 is arranged above the second plane and covers the whole second plane. The second graphic layer 140 is disposed on a side of the first graphic layer 130 away from the substrate layer 110. Its set area on the first image-text layer 130 corresponds to the blank area of the first microlens layer 120. The second microlens layer 150 may be disposed at one side of the second graphic layer 140 and cover the second graphic layer 140. For example, a layer remote from the substrate layer 110. And the plating layer 160 may be laminated on the second microlens layer 150.

In the microlens magnifying imaging film 200, the distance between the top of the second microlens included in the second microlens layer 150 and the second image-text microstructure included in the second image-text layer 140 is greater than the reflection focal length of the second microlens. For example, when the reflective focal length of the second microlens may be 20 μm, the distance between the top of the second microlens and the second image-text microstructure may be 20.5 μm, 21 μm, 22 μm, 23 μm, etc. The parameters of the second microlenses may be the same or different from those of the first microlenses. Such as diameter, curvature, thickness, etc. For example, a UV replication method may be employed, and the UV gel is subjected to imprint molding and ultraviolet curing using the same mold or a different mold.

The first microlens has a transmission focal length of 100 μm and the second microlens has a reflection focal length of 20 μm. The first image-text microstructure is five-pointed star, and the filling ink is light-color ink. The effect of the second image-text microstructure combined with the second micro lens and the film coating layer is a single-image 'waving flag', and the filling ink is dark ink. The upper view is a view plane, and the first microlens array layer 120 covers an area, which is a light-colored array type enlarged dynamic image of a plurality of five-pointed star, and has a depth of field of-10 mm. The second microlens array 150 covers the area, presenting a dark single suspended "flyaway flag" image with a single suspended image depth of field of +7mm and an array magnified dynamic image depth of field of-2 mm.

FIG. 3 is another exemplary schematic diagram of a microlens magnifying imaging film according to some embodiments of the present application. The microlens magnifier imaging film 300 may contain the same elements as the microlens magnifier imaging film 100 or the microlens magnifier imaging film 200, except for the arrangement between the elements. As shown in fig. 3, the arrangement of the base layer 110 and the first microlens layer 120 is not different from that in fig. 1. For example, the substrate layer 110 also has oppositely disposed first and second planes. The first microlens layer 120 includes a plurality of first microlenses disposed on a first plane in an etched or replicated manner, also forming a coverage area and a blank area. The thickness of the base layer 110 is also the same as the transmission focal length of the first microlenses of the first microlens layer 120. The first teletext layer 130 is arranged above the second plane, corresponding to a first teletext area 131 of the coverage area (e.g. coverage area 121) on the first plane. The second graphics layer 140 may be disposed in a blank area on the first plane. The second microlens layer 150 can be disposed in a lens region of the second plane corresponding to the blank region to correspond to the second image-text layer 140. And the coating layer 160 may be laminated on the second microlens layer 150

In the microlens magnification imaging film 300, the parameters of the plurality of first microlenses included in the first microlens layer 140 and the plurality of second microlenses included in the second microlens layer 150 are different. Such as diameter, curvature, thickness, etc. The reflection focal length of the second microlens may be equal to the sum of the transmission focal length of the first microlens and the height of the second microlens layer 150. The microlens amplifying imaging film disclosed by the application adopts the nested use of the double-sided lenses and combines a transmission type structure and a reflection type structure, so that an array amplifying dynamic image and a single image suspension image can be well combined, and the optimal state of depth of field and visual angle is achieved.

The application also discloses a preparation method of the microlens magnifying imaging film. Fig. 4 is an exemplary flow chart of a method of preparing a microlens magnifying imaging film according to some embodiments of the present application. As shown in fig. 4, the flow 400 may include the following operations.

At step 410, a base layer is provided.

The substrate layer comprises a first plane and a second plane which are oppositely arranged, and the substrate layer can be made of polyethylene terephthalate (PET), glass, polycarbonate (PC), polymethyl methacrylate (PMMA), polyimide (PI), transparent polyimide (CPI), ultraviolet curing glue (UV glue) and the like.

Step 420, disposing the first microlens layer on the first plane and disposing the first image-text layer on the second plane by ultraviolet curing glue replication operation.

The first micro-lens layer comprises a plurality of first micro-lenses and partially covers the first plane to form a coverage area and a blank area on the first plane. The first image-text layer comprises a plurality of first image-text microstructures which are arranged on the second plane and correspond to the first image-text areas of the coverage area.

Illustratively, a layer of ultraviolet curing glue (UV glue) is laid on two planes of the substrate layer, and then the UV glue is subjected to imprint molding and UV curing by using a mold (e.g., a microlens array mold), so as to finally form a plurality of first microlenses. The transmission focal length of the first microlens may be 20-200 μm. For example, 20 μm, 40 μm, 60 μm, 80 μm, 100 μm, 120 μm, 140 μm, 160 μm, 180 μm, 200 μm, etc. Alternatively or preferably, the transmission focal length of the first microlens may be 100 μm. In one possible embodiment, the thickness of the base layer 110 may be the same as the transmissive focal length of the first microlenses.

Similarly, a layer of Ultraviolet (UV) glue is laid on the second plane of the substrate layer, and then a mold (for example, a micro-graphic structure mold) is used for embossing the UV glue and UV curing, so as to finally form a plurality of first micro-graphic structures. When UV replication is performed, a replication area can be reserved to form a blank area and a second image-text area corresponding to the blank area.

And step 430, setting a second image-text layer on the second plane corresponding to the second image-text area of the blank area through ultraviolet curing glue copying operation.

The second image-text layer comprises a plurality of second image-text microstructures.

Step 440, disposing a second microlens layer on a side of the second image-text layer away from the substrate layer by ultraviolet curing adhesive replication operation, and covering the second image-text layer.

The two micro-lens layers comprise a plurality of second micro-lenses. The second microlens may have a reflection focal length of 20-50 μm. For example, 20 μm, 25 μm, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm, etc. Alternatively or preferably, the reflective focal length of the second microlens may be 20 μm. In one possible embodiment, the distance between the top of the second microlens and the second image microstructure may be greater than the reflective focal length of the second microlens. For example, when the reflective focal length of the second microlens may be 20 μm, the distance between the top of the second microlens and the second image-text microstructure may be 21 μm, 22 μm, or 20.5 μm.

And step 450, performing coating operation on the second micro-lens layer to laminate a coating layer on the second micro-lens layer and the second image-text layer.

The plating layer may be a metal film, for example, an aluminum film, a chromium film, or the like. A vacuum particle sputtering process may be used to form the coating layer.

FIG. 5 is an exemplary flow chart of another method of preparing a microlens magnifying imaging film according to some embodiments of the present application. As shown in fig. 5, the flow 500 may include the following operations.

Step 510, providing a base layer.

Wherein, the basal layer includes the first plane and the second plane of relative setting.

Step 520, disposing a first microlens layer on the first plane and disposing a first image-text layer on the second plane by ultraviolet curing glue replication operation.

The first micro-lens layer comprises a plurality of first micro-lenses and partially covers the first plane to form a coverage area and a blank area on the first plane; the first image-text layer comprises a plurality of first image-text microstructures which are arranged on the second plane and cover the second plane.

And 530, setting a second image-text layer in a setting area corresponding to the blank area on one side of the first image-text layer far away from the substrate layer through ultraviolet curing glue copying operation.

Step 540, disposing a second microlens layer on a side of the second image-text layer away from the substrate layer by ultraviolet curing glue replication operation, and covering the second image-text layer.

The two micro-lens layers comprise a plurality of second micro-lenses.

And step 550, performing a coating operation on the second microlens layer to laminate a coating layer on the second microlens layer.

Some steps in flow 500 may be the same or similar to some steps of flow 400 and may be referenced. Some differences are that the first teletext layer may be arranged above the second plane and cover the entire second plane. The second image-text layer is arranged on one side of the first image-text layer far away from the basal layer. The setting area of the first image-text layer corresponds to the blank area of the first micro-lens layer. The second microlens layer may be disposed on one side of the second image-text layer and covers the second image-text layer. For example, a layer remote from the substrate layer. The coating layer can be laminated on the second microlens layer

The distance between the top of the second micro lens contained in the second micro lens layer and the second image-text microstructure contained in the second image-text layer is larger than the reflection focal length of the second micro lens. For example, when the reflective focal length of the second microlens may be 20 μm, the distance between the top of the second microlens and the second image-text microstructure may be 21 μm, 23 μm, etc. In addition, the parameters of the second microlenses may be the same as those of the first microlenses. Such as diameter, curvature, thickness, etc. For example, a UV replication method may be employed, and the UV gel is embossed and UV cured using the same mold.

FIG. 6 is an exemplary flow chart of another method of preparing a microlens magnifying imaging film according to some embodiments of the present application. As shown in fig. 6, the flow 600 may include the following operations.

At step 610, a base layer is provided.

In step 620, the first microlens layer is disposed on the first plane and the first image-text layer is disposed on the second plane through the ultraviolet curing adhesive replication operation.

The first micro-lens layer comprises a plurality of first micro-lenses and partially covers the first plane to form a coverage area and a blank area on the first plane; the first image-text layer comprises a plurality of first image-text microstructures which are arranged on the second plane and correspond to the image-text areas of the coverage area.

In step 630, the second image layer is disposed in the blank area above the first plane by the ultraviolet curing adhesive replication operation.

And step 640, setting a second micro-lens layer in a lens area of the second plane corresponding to the blank area through ultraviolet curing glue copying operation so as to correspond to the second image-text layer.

The two micro-lens layers comprise a plurality of second micro-lenses.

And 650, performing a coating operation on the second microlens layer to laminate a coating layer on the second microlens layer.

Some steps in flow 600 may be the same as or similar to some steps of flow 400 and reference may be made thereto. Wherein the parameters of the first microlenses contained in the first microlens layer and the parameters of the second microlenses contained in the second microlens layer are different. Such as diameter, curvature, thickness, etc. The reflection focal length of the second microlens may be equal to a sum of the transmission focal length of the first microlens and a height of the second microlens layer.

It should be noted that the above description of the steps in fig. 4-6 is for illustration and description only, and is not intended to limit the scope of applicability of the present description. Various modifications and changes may be made to the individual steps of fig. 4-6 by those skilled in the art under the guidance of this specification. However, such modifications and variations are still within the scope of the present description.

The application also discloses a false proof product which can comprise the transmission and reflection integrated microlens magnifying imaging film.

Having described the basic concepts herein, it will be apparent to those skilled in the art that the foregoing detailed disclosure is by way of example only and is not intended to be limiting. Although not explicitly described herein, various modifications, improvements, and adaptations to the present disclosure may occur to one skilled in the art. Such modifications, improvements, and modifications are intended to be suggested within this specification, and therefore, such modifications, improvements, and modifications are intended to be included within the spirit and scope of the exemplary embodiments of the present utility model.

It should be noted that in order to simplify the presentation disclosed in this specification and thereby aid in understanding one or more embodiments, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of the preceding description of the embodiments of the present specification. This method of disclosure, however, is not intended to imply that more features than are presented in the claims are required for the present description. Indeed, less than all of the features of a single embodiment disclosed above.

In some embodiments, numbers describing the components, number of attributes are used, it being understood that such numbers being used in the description of embodiments are modified in some examples by the modifier "about," approximately, "or" substantially. Unless otherwise indicated, "about," "approximately," or "substantially" indicate that the number allows for a 20% variation. Accordingly, in some embodiments, numerical parameters set forth in the specification and claims are approximations that may vary depending upon the desired properties sought to be obtained by the individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and employ a method for preserving the general number of digits. Although the numerical ranges and parameters set forth herein are approximations that may be employed in some embodiments to confirm the breadth of the range, in particular embodiments, the setting of such numerical values is as precise as possible.

Finally, it should be understood that the embodiments described in this specification are merely illustrative of the principles of the embodiments of this specification. Other variations are possible within the scope of this description. Thus, by way of example, and not limitation, alternative configurations of embodiments of the present specification may be considered as consistent with the teachings of the present specification. Accordingly, the embodiments of the present specification are not limited to only the embodiments explicitly described and depicted in the present specification.

Claims

1. The integrated transmission and reflection type microlens magnifying imaging film is characterized in that the microlens magnifying imaging film is of a layer structure and comprises the following components:

a base layer comprising oppositely disposed first and second planes;

the first micro-lens layer comprises a plurality of first micro-lenses which are arranged on the first plane and partially cover the first plane so as to form a coverage area and a blank area on the first plane;

the first image-text layer comprises a plurality of first image-text microstructures which are arranged on the second plane and correspond to the first image-text areas of the coverage area;

the second image-text layer comprises a plurality of second image-text microstructures and is arranged on the second plane and corresponds to the second image-text area of the blank area;

the second micro-lens layer comprises a plurality of second micro-lenses, is arranged on one side of the second image-text layer far away from the basal layer and covers the second image-text layer; and

and the coating layer is laminated on the second micro-lens layer.

2. The integrated transmission and reflection type microlens magnifying imaging film is characterized in that the microlens magnifying imaging film is of a layer structure and comprises the following components:

a base layer comprising oppositely disposed first and second planes;

the first image-text layer comprises a plurality of first image-text microstructures which are arranged on the second plane and cover the second plane;

the second image-text layer comprises a plurality of second image-text microstructures, the second image-text microstructures are arranged on one side of the first image-text layer, which is far away from the basal layer, and the arrangement area corresponds to the blank area;

and the coating layer is laminated on the second micro-lens layer.

3. The integrated transmission and reflection type microlens magnifying imaging film is characterized in that the microlens magnifying imaging film is of a layer structure and comprises the following components:

a base layer comprising oppositely disposed first and second planes;

the first image-text layer comprises a plurality of first image-text microstructures which are arranged on the second plane and correspond to the image-text areas of the coverage area;

the second image-text layer comprises a plurality of second image-text microstructures which are arranged in a blank area above the first plane;

the second micro-lens layer comprises a plurality of second micro-lenses which are arranged in the lens area of the second plane corresponding to the blank area so as to correspond to the second image-text layer; and

and the coating layer is laminated on the second micro-lens layer.

4. The microlens magnifying imaging film according to claim 1 or 2, wherein the coating layer is further laminated on the first image-text layer.

5. A microlens magnifying imaging film according to any one of claims 1 to 3 wherein the first microlens has a transmission focal length of 20-200 μm and the second microlens has a reflection focal length of 20-50 μm.

6. The microlens magnifying imaging film according to claim 3, wherein the parameters of the first microlens and the second microlens are different, and the reflection focal length of the second microlens is equal to the sum of the transmission focal length of the first microlens and the height of the second microlens layer.

7. A microlens magnifying imaging film according to any one of claims 1 to 3 wherein the first microlens layer and the first image-text layer form a transmissive array magnification dynamic effect; the second micro-lens layer, the second image-text layer and the coating layer form a reflective single-image space suspension imaging effect.

8. A microlens magnifying imaging film according to any one of claims 1 to 3 wherein the thickness of the base layer is equal to the transmitted focal length of the first microlens.

9. The microlens magnifying imaging film according to claim 1, wherein a distance between the top of the second microlens and the second image-text microstructure is greater than a reflection focal length of the second microlens.

10. The microlens magnifying imaging film according to claim 2, wherein a distance between the top of the second microlens and the second image-text microstructure is greater than a reflection focal length of the second microlens.

11. The microlens magnifying imaging film according to claim 1 or 2, wherein the parameters of the first microlens and the second microlens are the same or different.

12. A microlens magnifying imaging film according to any one of claims 1 to 3 wherein the first and second graphic microstructures are ink filled graphic microstructures.

13. A security article comprising a transflective integrated microlens magnifying imaging film according to any one of claims 1 to 12.