CN203164523U - Lens array and image display sheet with lens array - Google Patents

Abstract

The utility model relates to a lens array and an image display sheet with the lens array. Two cylindrical lens arrays with curvatures in different directions are matched with a combined image having image periods in the two different directions, so that the combined image can be displayed. Effects of image changing, dynamic, three-dimensional, depth and size changes.

Description

Lens array and image display sheet with lens array

technical field

The utility model relates to an image display sheet material with a lens displaying images, in particular to an image display sheet material with a lenticular lens display image. the

Background technique

3D imaging technology is one of the booming technologies nowadays. The current 3D technology can be roughly divided into stereoscopic and autostereogram. The main commercializers of glass technology include polarizing glasses and shutter glasses, and the main commercializers of naked-view 3D technology include grating (parallax barrier) and lenticular lens technology (lenticular lens). Two techniques. the

FIG. 1 is a schematic diagram of a conventional lenticular lens sheet imaging method. A lenticular lens sheet 10 is composed of parallel elongated convex lenses 101 , and a synthetic image 12 is placed adjacent to the flat surface 102 of the lenticular lens sheet 10 . The composite image 12, for example, is composed of two sub-images 121, 122, which are partial strip-shaped images, wherein the sub-image 121 takes an odd-numbered strip-shaped part, and the sub-image 122 takes an even-numbered strip-shaped part to combine with the sub-image. 121 are interspersed with each other to form a composite image 12 . When the human eye 14 views the synthetic image 12 through the lenticular lens sheet 10 from a certain distance adjacent to the convex lens surface 104 , the synthetic image 12 can be viewed in 3D or animation-like effect. the

Generally speaking, the parameters of the elongated convex lens 101 include angle, pitch or period, radius of curvature of a lenticule, thickness, thickness of the substrate below the curved surface of a lens) and the lens's index of refraction. The viewing angle at which the human eye can see an image is related to the angle and the refractive index of the lens. When the refractive index of the lens is fixed, the synthetic image 12 under the narrow-angle lenticular lens sheet 10 is more inclined to 3D display effect, and the synthetic image 12 under the wide-angle lenticular lens sheet 10 is more inclined to 3D display effect. The synthetic image 12 tends to display more dynamic effects. the

Moreover, since the general lenticular lens sheet 10 has only one-dimensionally repeated curvature radii, the human eye 14 can only observe the dynamic effect in one-dimensional direction. Similar to the lenticular lens sheet 10, please refer to Fig. 2, there is an array by a plurality of spherical lenses (spherical lens), or there is a so-called lens array (lens array) 25, and each lens has a curvature of 360 degrees, so it can 3D or dynamic effects showing multi-dimensional directions. However, the fabrication of the microlens array currently requires a precisely designed mold, and thus the production cost is high, so the microlens array is not easy to be widely used in general products. the

Utility model content

One of the technical problems to be solved by the utility model is to provide an image display sheet for the above-mentioned deficiencies in the prior art, which can display images through a lens array composed of two cylindrical lenses with curvatures in different directions. various visual effects. the

One of the technical problems to be solved by the utility model is to provide an image display sheet for the above-mentioned deficiencies in the prior art, which can Display the effect of changing the image in two directions of the combined image, three-dimensional effect, dynamic effect, depth effect or zoom in and out effect. the

One of the technical problems to be solved by the utility model is to provide an image display sheet for the above-mentioned deficiencies in the prior art, which can use the existing manufacturing process to manufacture cylindrical lenses with two curvatures in different directions, saving the cost of conventional production of spherical surfaces. The cost of the lens. the

The technical solution adopted by the utility model to solve the technical problem is to provide an image display sheet, which includes: combined image, which includes a plurality of combination units arranged into a two-dimensional array, and these combination units are arranged on a first side There is a first image period upwards and a second image period in a second direction, wherein the first direction is different from the second direction; and a lens array superimposed with the combined image, the lens array includes distributed A first surface of a plurality of lenticular lenses and a second surface opposite to the first surface, wherein the lenticular lenses have a first lens period in the first direction of the first surface and in the second direction There is a second lens period on the surface, and the combined image is superimposed on the second surface. the

Preferably, the first image period is equal to the first lens period or the second lens period; and, the second image period is equal to the first lens period or the second lens period. the

Preferably, the first direction is orthogonal to the second direction. the

Preferably, any one of the lenticular lenses includes four curved surfaces with the same curvature, and the size of each curvature projected on the second surface is equal to the first lens period or the second lens period. the

Preferably, the combined image at least includes a part of a first interlaced image and a part of a second interlaced image, and wherein: the first interlaced image and the second interlaced image are divided in parallel to the first direction respectively processing the multiple columns of first interleaved sub-image strips forming the first interlaced image and the multiple columns of second interlaced sub-image strips forming the second interlaced image, the combined image consists of a plurality of odd columns of the first interlaced sub-image strips and The second interlaced sub-image strips of a plurality of even columns are staggered, each of the first interlaced sub-image strips is adjacent to two second interlaced sub-image strips, and the second image period is equal to the first interlaced sub-image strip and An integer multiple of the sum of the widths of the second interlaced sub-image strips. the

Preferably, the first interlaced image or the second interlaced image is composed of a part of N original images, N is a positive integer greater than 1, and wherein: an Mth original image is formed by sorting the N original images , wherein M is sequentially equal to a plurality of positive integers from 1 to N; each of the Mth original images is processed in a manner parallel to the second direction to form a plurality of rows of Mth sub-image strips of the Mth original image; the first Or the second interlaced image is formed by interlacing the Mth sub-image strips of the (M+N*C)th rows of a plurality of Mth original images, where C is sequentially 0 and a plurality of positive integers greater than or equal to 1; And the first image period is equal to the sum of the widths of the Mth sub-image strips of the Mth original images. the

Preferably, any of the lenticular lenses includes four curved surfaces with the same radius of curvature, and the size of each of the curved surfaces projected on the second surface is equal to the first lens period or the second lens period, and the maximum of any of the curved surfaces The distance between the place protruding from the first surface and the second surface is equal to 3 times of the radius of curvature. the

Preferably, the difference between the first lens period and the first image period is less than 25%; or, the difference between the first lens period and the first image period is less than 10%. the

Preferably, the difference between the second lens period and the second image period is less than 25%; or, the difference between the second lens period and the second image period is less than 10%. the

Preferably, the combined image is composed of a part of J interlaced images, J is a positive integer greater than 2, and wherein: a K-th interlaced image is formed by sorting the J interlaced images, wherein K is sequentially equal to 1 to A plurality of positive integers of J; each of the K-th interlaced images is processed in parallel to the first direction to form a plurality of rows of K-th interlaced sub-image strips of the K-th interlaced image; the combined image is composed of a plurality of K-th interlaced images The K-th interlaced sub-image strips of the (K+J*L)-th columns are interlaced, where L is a plurality of positive integers greater than or equal to 0 in sequence; and the second image period is equal to the K-th interlaced The total width of the Kth interlaced sub-image strips of the image. the

Preferably, any of the interlaced images is composed of a part of N original images, N is a positive integer greater than 1, and wherein: an Mth original image is formed by sorting the N original images, wherein M is sequentially equal to A plurality of positive integers from 1 to N; each of the Mth original images is processed in parallel to the second direction to form multiple rows of Mth sub-image strips of the Mth original image; the interlaced image consists of multiple Mth original images The Mth sub-image strips of the (M+N*C)th rows of the image are formed alternately, where C is a plurality of positive integers greater than or equal to 0 in sequence; and the first image cycle is equal to the Mth original The total width of the Mth sub-image strip of the image. the

The utility model also provides a lens array, which includes a first surface on which a plurality of lenticular lenses are distributed and a second surface opposite to the first surface, wherein the lenticular lenses are arranged in an X direction of the first surface There is a first lens period on the top and a second lens period on a Y direction. the

Preferably, any one of the lenticular lenses includes four curved surfaces with the same curvature, and the size of each curved surface projected on the second surface is equal to the first lens period or the second lens period. the

Preferably, any of the lenticular lenses includes four curved surfaces with the same radius of curvature, and the size of each of the curved surfaces projected on the second surface is equal to the first lens period or the second lens period; and any of the curved surfaces The distance between the place most protruding from the first surface and the second surface is equal to 3 times of the radius of curvature. the

Preferably, the first lens period is equal to the second lens period. the

The utility model also provides. A combined image viewed by the above-mentioned lens array, the combined image includes a plurality of combined units arranged in a two-dimensional array, and the combined units have a first image period in the X direction and There is a second image period in the Y direction. the

Preferably, the combined image is composed of a part of J interlaced images, J is a positive integer greater than 2, and wherein: a K-th interlaced image is formed by sorting the J interlaced images, wherein K is sequentially equal to 1 to A plurality of positive integers of J; each K-th interlaced image is processed in parallel to the X-direction to form a plurality of rows of K-th interlaced sub-image strips of the K-th interlaced image; the combined image is composed of the multiple K-th interlaced images The K-th interlaced sub-image strips of the (K+J*L)-th columns are interlaced, wherein L is a plurality of positive integers greater than or equal to 0 in sequence, and the second image period is equal to the number of the K-th interlaced images The total width of the Kth interlaced sub-image strips. the

Preferably, any of the interlaced images is composed of a part of N original images, N is a positive integer greater than 1, and wherein: an Mth original image is formed by sorting the N original images, wherein M is sequentially equal to A plurality of positive integers from 1 to N; each of the Mth original images is processed in parallel to the Y direction to form a plurality of rows of M sub-image strips of the Mth original image; the interlaced image consists of a plurality of Mth original images The M-th sub-image strips of the (M+N*C)-th rows are formed alternately, where C is sequentially 0 and a plurality of positive integers greater than or equal to 1, and the first image cycle is equal to the M-th original images The sum of the widths of the Mth sub-image strips. the

Preferably, the original images are multiple view images of an object. the

Preferably, the difference between the first lens period and the first image period is less than 25%, and the difference between the second lens period and the second image period is less than 25%; or, the first lens period and the first The difference between the image period is less than 10%, and the difference between the second lens period and the second image period is less than 10%. the

The image display sheet of the utility model can display a variety of visual effects of images through a lens array composed of two cylindrical lenses with curvatures in different directions; Image changing effect in two directions, three-dimensional effect, dynamic effect, depth effect or zoom in and out effect. In addition, the lenticular lens with two curvatures in different directions of the present invention can be manufactured by using the existing manufacturing process, so as to save the cost of traditional spherical lens manufacturing. the

Description of drawings

FIG. 1 is a schematic diagram of a conventional imaging method of a lenticular lens sheet. the

FIG. 2 is a schematic top view of a conventional spherical lens array. the

FIG. 3 is a three-dimensional schematic view of the image display sheet according to the first embodiment of the present invention. the

FIG. 4 is an enlarged perspective view of a single lenticular lens of the first embodiment of the present invention. the

FIG. 5 is an enlarged schematic side view of the single lenticular lens of the first embodiment of the present invention. the

FIG. 6 is a schematic diagram of a combined image that can be combined with the lenticular lens of the present invention. the

FIG. 7 is a schematic diagram of an embodiment of the original image production of the present invention. the

FIG. 8 is a schematic diagram of an embodiment of producing a combined image of the present invention from the original image in FIG. 7 . the

Detailed ways

The utility model hereinafter referred to as the lenticular lens sheet, its material can be thermosetting resin (thermosetting resin), thermoplastic resin (thermoplastic resin), thermosetting plastic (thermosetting plastic), thermoplastic (thermoplastic plastic) or other polymer materials, for example But not limited, such as biaxial oriented polyester (OPET) or amorphous polyester (amorphous polyester, APET) and so on. The material of the lenticular lens sheet can also be a composite material, such as a substrate plus a coated substrate, such as heat sealable polymer (heat sealable polymer) or heat sealable resin (heat sealable resin) coated Distributed in ethylene-methyl methacrylate copolymer (EMA), ethylene-vinyl acetate (EVA), ethylene-acrylic acid T-ester copolymer (EBA), polypropylene (PP), polyethylene (PE), etc. the

The interlacing method (interlacing method) used in the following description of the utility model basically utilizes the existing interlacing technology. For example, the original image is a complete image from a capture device or a computer design. First, the sorted original image is divided into strip-shaped sub-image strips through a slicing strip in a single direction; then, the Take two original images as an example. Among the two original images that have been cut into strips, the first original image retains odd columns, the second original image retains even columns, and then the two are interleaved with odd and even columns. The interlaced image is generated in a manner, and then the interlaced image is interleaved to generate the combined image applicable to the utility model. Take three original images as an example, among the three original images that have been cut into strips, the first original image retains 1, 4, 7 and other sub-image strips, and the second original image retains 2, 5, 7 and so on. 8 equal columns of sub-image strips, and the third original image retains 3, 6, 9 etc. sub-image strips, and then the three sub-image strips are arranged alternately in order to generate an interlaced image. the

It should be noted that the above-mentioned sub-image strips are strip-shaped in appearance, that is, a rectangle with long sides adjacent to short sides; in terms of pixels, the number of pixels parallel to the cutting direction (constituting the long side) Number of pixels greater than the non-parallel cut direction (constituting the short side). For the convenience of description, in the following embodiments of the present invention, the short side of the sub-image bar is described as a single pixel and the long side includes multiple pixels; however, it can be understood that the short side is not limited to a single pixel in practice. . the

The current mass-produced lenticular sheet has a lens period in a single direction or a lens array density, which is generally expressed by the number of lenses per inch (Lenses Per Inch, LPI). Referring to FIG. 3 , the lenticular lens sheet in the present invention is a lens array with two lens periods. Viewed from a general Cartesian coordinate system, the length of a lenticular lens sheet 40 in the X and Y axis directions is greater than the length in the Z axis direction, wherein the first surface 401 and the second surface 402 of the lenticular lens sheet 40 are parallel to the X-Y plane. In one embodiment, the first surface 401 is a lens surface with curvature, and the second surface 402 is a substantially flat surface. The lenticular lens sheet 40 superimposes a combined image 42 with the second surface 402 adjacent to or in contact, and the viewer's eyes are closer to the first surface 401 to observe the combined image 42 through the lenticular lens sheet 40 . Therefore, such a lenticular lens sheet and combined image can be combined into an image-displaying sheet. the

Secondly, lenses with curvature are distributed on the first surface 401, and these lenses have a first lens period (LPI) in a first direction and a second lens period in a second direction, wherein the first direction Different from the second direction, it is preferable that the first direction is orthogonal to the second direction. For example, as shown in FIG. 3 , the first lens period of the lenticular lens sheet 40 in the X-axis direction is the first lens period 20, and the second lens period in the Y-axis direction is the second lens period 22. Preferably, the lens period 20 and the second lens period 22 are the same, but the present invention is not limited thereto. the

It should be noted that, structurally, the lenticular lens sheet 40 with two lens periods of the present invention is arranged in an array (or so-called lens array) with existing spherical lenses (spherical lens) or honeycomb lenses. ) are still different. In comparison with a spherical lens array, each spherical lens in the prior art is distributed on the array surface with a circular curvature and forms a circular projection on the array surface, and there are several places without curvature distribution between the spherical lenses. Secondly, in terms of production, the existing lens arrays of spherical lenses or honeycomb lenses must be manufactured with precisely designed molds, so the cost is high and it is difficult to popularize in the production of cheap products. the

Therefore, the lenticular lens sheet 40 proposed by the present invention has two lens periods. Structurally, the lenticular lenses with curvature can be adjacent to the adjacent lenticular lenses without gaps, and the effect is better when used for displaying images. Secondly, in terms of production, cylinder lenticular engraving can be used to engrave in the two directions of the X and Y axes to obtain a cylindrical lens array with lens periods in two different directions. the

The above-mentioned lenticular lens array obtained by engraving the lenticular lens can be called a lenticular lens sheet pattern, which can be applied to mass production of lenticular lens sheets. For example, casting (casting) a planar form sheet including a lenticular lens template from a thermosetting resin; or forming it by thermoforming a cast; or forming it on a polished plate Apply heat or pressure to a template with lenticular lenses to cut (cut into) or engrave (engraved into) lenticular lens arrays; or form by injection molding; or use resin extrusion It is pressed on a transparent pre-plate or pre-produced sheet or film, and the lenticular lens template can be carved in the resin by embossing roll. All of the above are existing mass production methods. the

Therefore, the production of the lenticular lens sheet of the present invention is simpler than that of the existing spherical lens or honeycomb lens, and is suitable for mass production, and is applied to cheap and popular products, billboards, decoration materials, furniture and more. For example, the above-mentioned lenticular lens sheet and combined image are produced on both sides of a sheet by direct extrusion with double flower wheels of an extruder, which can have a watermark effect due to changes in the refractive index, and can be made into wrapping paper, table mats, Shower curtains, glass trim, stickers or tape, etc. Alternatively, the prepared lenticular lens sheet is printed in color or laminated, and the combined image is produced or laminated on the lenticular lens sheet. Alternatively, the combined image is placed on another carrier, making it close to the lenticular lens sheet, such as the use of a lighting sheet, a projection sheet, or a slide, and the like. the

Therefore, FIG. 4 and FIG. 5 are enlarged schematic diagrams of the single lenticular lens of the first embodiment of the present invention. Referring to Fig. 4 and Fig. 5, each lenticular lens 50 of the present utility model has two lens period T1 and lens period T2 respectively in two different directions, wherein lens period T1 and lens period T2 can be the same or different, such as making In consideration of convenience, it is better to have the same lens period T1 and lens period T2. Secondly, the first surface 501 corresponding to the lens period T1 has a lens with a radius of curvature R, and the opposite side also has a lens with a radius of curvature R; and the first surface 501 corresponding to the lens period T2 also has a lens with a radius of curvature R, and on the opposite side The side also has a radius of curvature R, and the second surface 502 is a flat surface. The distance from the highest point of the lens on the first surface 501 to the second surface 502 is the thickness t of the lens, wherein the thickness t of the lens is generally The magnification of the radius of curvature R, in the present invention, t is about 3 times of R, but the present invention is not limited thereto. Therefore, the first surface 501 of the lenticular lens 50 has four curved surfaces with the same curvature and encloses the range of the quadrilateral projection of the surface of the lenticular lens 50, and the four curvatures are a pair of transverse curvatures (plane curvature) and a pair of Profile curvature. Secondly, any transverse curvature is adjacent to the pair of longitudinal curvatures; similarly, any longitudinal curvature is adjacent to the pair of transverse curvatures. the

Furthermore, please refer to Fig. 3 and Fig. 4 at the same time. In the same direction, the adjacent two transverse curvatures or the adjacent two longitudinal curvatures are contacted and connected without other parts, that is, there is no gap between the adjacent two transverse curvatures. Other curvatures or straight lines exist. For lenticular lenses, any two adjacent lenticular lenses are close to each other without gaps. That is to say, the size of the projection of the curved surface of the curvature radius R on the second surface 502 is the lens period T1, and the projection of the curvature radius R of the curved surface on the second surface 502 is the lens period T2; of course, the curvature radius R, the lens period T1 or the lens period T2 are used to illustrate the technology of the present invention. Here, the projection of a curved surface with a radius of curvature R onto the second surface 502 is the lens period T2 or the lens period T1. the

In this utility model, when the radius of curvature R is larger, the thickness t of the lens is also larger, which can be applied to applications with larger allowable thickness; when the radius of curvature R is smaller, it can be applied to applications with smaller allowable thickness . Compared with the current mass-produced lenticular lens sheets that only have curvature in a single direction, the lenticular lens of the present invention has a radius of curvature R in two directions, so as long as an appropriate combined image and lens thickness t are designed, no matter it is Tilt or flip the lenticular lens left or right, or tilt or flip the lenticular lens up and down, and you can see three-dimensional effects with depth or jumping images in two directions. What's more, through the matching of the lens period T1 and the lens period T2 of the lenticular lens of the present invention and the combined image, the image effect of zooming in or out can still be achieved, which will be described in detail later. Secondly, the thickness t of the lens in the present invention is the distance between the most protruding surface of the curvature radius R and the second surface 501 and the second surface 502, preferably approximately equal to 3 times the curvature radius R. the

FIG. 6 is a schematic diagram of a combined image that can be combined with the lenticular lens of the present invention. The two-dimensional combined image 62 is composed of a plurality of combining units 621, 622, 623 and 624 and arranged into a two-dimensional array, wherein the combining unit has a first image period T3 in the first direction and a period T3 in the second direction. The second image period T4. In this embodiment, the combined image 62 includes pixels of the original images 63, 65, 67 and 69, wherein the original images 63 and 65 form a first interlaced image 64 (interlaced image), and the original images 67 and 69 form a second interlaced image 66 . The method of interlacing images can utilize the known prior art. Taking the first interlaced image 64 as an example, the original images 63 and 65 are respectively divided into sub-image strips 631, 632, 651, 652 (a strip of sub image), wherein the sub-image bars 631, 651 respectively represent the sub-image strips of odd-numbered rows, and the sub-image bars 632, 652 respectively represent the sub-image strips of even-numbered rows, and the sub-image bars 631, 652 again The interlaced setting becomes the first interlaced image 64, wherein the first interlaced image 64 captures the odd-numbered sub-image strips 631 of the original image 63 and the even-numbered sub-image strips 652 of the original image 65 to sequentially interleave to become the interlaced image of the first interlaced image 64 The sub image bars 631' and 652'. Similarly, the original images 67, 69 are also divided into sub-image strips 671, 672, 691, 692 along one direction respectively, and the sub-image strips 671, 692 are arranged alternately to form the second interlaced image 66, and become the interlaced image of the second interlaced image 66. Sub image strips 671', 692'. It can be understood that, for the first interlaced image 64 , the even-numbered sub-image strips 632 of the original image 63 and the odd-numbered sub-image strips 651 of the original image 65 may also be sequentially interleaved, and details will not be repeated here. the

According to the above, any interlaced image is composed of a part of N original images, and N is a positive integer greater than 1. The interlaced image can be produced in the following way:

(1) Sort N original images into an M-th original image, where M is sequentially equal to multiple positive integers from 1 to N;

(2) Process the Mth original image in a splitting manner parallel to the second direction (in this case, the Y direction), so as to form multiple rows of Mth sub-image strips of the Mth original image;

(3) Select the Mth sub-image strip of the (M+N*C)th row of the Mth original image, where C is 0 and multiple positive integers greater than or equal to 1 in sequence; and

(4) Interlacing the Mth sub-image strips of the (M+N*C)th row of the Mth original images to form the interlaced image, and the first image period is equal to the sum of the widths of the Mth sub-image strips. the

It should be noted that, as in the aforementioned interlacing method, each sub-image bar 631, 652, 671, 692 is in an array of 1*I (1 is the number of pixels in the X direction on the figure, and I is the number of pixels in the Y direction) , taking the first interlaced image 64 as an example, the interleaved sub-image bar 631' of order 1 in the X direction includes pixels A11, A12, A13, A14, etc., and the interleaved sub-image bar 631' of order 3 includes A31, A32, A33, For pixels such as A34, the interleaved sub-image bar 652' of order 2 includes pixels such as B21, B22, B23, and B24, and the interleaved sub-image bar 652' of order 4 includes pixels such as B41, B42, B43, and B44. By analogy with the second interlaced image 66, the interlaced sub-image bar 671' of order 1 in the X direction includes pixels C11, C12, C13, C14, etc., and the interleaved sub-image bar 671' of order 3 includes C31, C32, C33, and C34 equal pixels, the interleaved sub-image bar 692' of order 2 includes pixels D21, D22, D23, D24, etc., and the interleaved sub-image bar 692' of order 4 includes pixels of D41, D42, D43, D44, etc. the

It can be understood that, also taking the first interlaced image 64 as an example, the interleaved sub-image bar 641 sorted 1 in the Y direction includes pixels A11, B21, A31, B41, etc., and the interlaced sub-image bar 642 sorted 2 includes A12, B22, A32 , B42 and other pixels, and so on. Similarly, for the second interlaced image 66, the interlaced sub-image strip 661 of order 1 in the Y direction includes pixels such as C11, D21, C31, and D41, and the interlaced sub-image strip 662 of order 2 includes C12, D22, C32, and D42 pixels, and so on. the

One of the features of the present invention is that the first interlaced image 64 and the second interlaced image 66 will undergo a second interlacing process. For images that have not been rotated, this second interleaving process is performed in a different direction than the first interlacing process. With continued reference to Fig. 6, the direction during the first interleaving process is the X direction, and the sub-image strips of the 1*I array are interleaved to generate the first interlaced image 64 and the second interlaced image 66; the direction of the second interleaved process In the Y direction, the interlaced sub-image strips 641 of odd columns in the first interlaced image 64 and the interlaced sub-image strips 662 of even columns in the second interlaced image 66 are respectively captured to form a combined image 62 . Secondly, for the combination image 62, taking the combination unit 621 as an example, in the first direction (X direction), the sum of the widths of the interlaced sub-image bars 631', 652' is equal to the first image period T3, or The sum of the widths of the interlaced sub-image strips 671', 692' is equal to the first image period T3. Still taking the combination unit 621 as an example, in the second direction (Y direction), the sum of the widths of the interlaced sub-image bars 641 and 662 is equal to the second image period T4. Furthermore, whether it is the combination unit 621, 622, 623 or 624, each includes a part of the original image 63, 65, 67, 69, and the original image can be observed by tilting the lenticular lens sheet when the lenticular lens sheet is used. 63, 65, 67, 69. the

For N original images (N greater than 1), such as the original images 63, 65, 67, and 69 (N=4) in this embodiment, first obtain half of the total number of interlaced images by interlacing technology, such as the first An interlaced image 64 and a second interlaced image 66 are combined to form a combination unit forming a combined image. In this case, the width of the interlaced unit of the first interlaced image 64 in the first direction (X direction) is the sum of the widths of the interlaced sub-image bars 631 ′, 652 ′; similarly, the width of the interlaced unit of the second interlaced image 66 The width of the interleaved unit in the first direction (X direction) is the sum of the widths of the interleaved sub-image strips 671' and 692'. Therefore, for the combination units 621, 622, 623, and 624, in the first direction (X direction), the width of the interlaced unit of the interlaced image is equal to the first image period T3, that is, the interleaved direction in the first interlaced process The sum of the widths of the sub-image strips 631', 652' is equal to the first image period T3, or the sum of the widths of the interlaced sub-image strips 671', 692' is equal to the first image period T3. Secondly, in the second direction (Y direction), the width of the interlaced unit of the interlaced image is equal to the second image period T4, that is, the sum of the widths of the interlaced sub-image strips 641 and 662 is equal to the second image period T4, or the interleaved sub-image The sum of the widths of the image bars 661, 642 is equal to the second image period T4. the

Accordingly, the combined image includes at least a portion of a first interlaced image and a portion of a second interlaced image, and the combined image is formed in the following manner:

(1) Separately process the first interlaced image and the second interlaced image in a splitting manner parallel to the first direction (X direction), so as to form multiple rows of first interlaced sub-image strips and the second interlaced image of the first interlaced image multiple columns of second interleaved sub-image strips of the image;

(2) Select the first interlaced sub-image strips of odd columns and the second interlaced sub-image strips of even columns; and

(3) Interleave the first interleaved sub-image strips of the odd columns and the second interleaved sub-image strips of the even columns to form the combined image, each of the first interleaved sub-image strips is adjacent to two second interleaved sub-image strips , and the second image period is equal to an integer multiple of the sum of the widths of the first interlaced sub-image strip and the width of the second interlaced sub-image strip. the

It should be noted that the above description of the production of the combination unit is only used to illustrate that the application of the lenticular lens sheet of the present utility model can observe a number of original images combined in a staggered manner. It can be understood that other combination images can also be designed according to needs, and the above is not intended to limit the design of the combination images matched with the lenticular lens sheet of the present invention. the

Please refer to FIG. 3 and FIG. 6 at the same time. For example, when the composite image 62 is used as the composite image 42 in FIG. Parallel to the X direction, swing the both sides of the lenticular lens sheet 40 in the X direction, then the observer can see the first interlaced image 64 in the combined image 42; if the observer swings the both sides of the lenticular lens sheet 40 in the Y direction, Then the second interlaced image 66 in the combined image 42 can be seen. Therefore, by using the lenticular lens sheet of the present invention and the combined image whose period is matched, the effect of image transformation, dynamic image or stereoscopic image in the two-dimensional direction of the combined image can be obtained. the

FIG. 7 is a schematic diagram of an embodiment of the original image production of the present invention. FIG. 8 is a schematic diagram of an embodiment of producing a combined image of the present invention from the original image in FIG. 7 . Referring to FIG. 7 , it is assumed that an object 77 is set at a space coordinate X-Y-Z, with the user's intended focus point as the origin, and the user intends to shoot at the root (origin) of the object 77 from different angles. Then, the included angle with the Z axis is θ1. Firstly, the user can photograph the tree root (origin) of the object 77 at angles of 1', 2', 3', and 4' and obtain four original images with an included angle of θ1 with the Z axis. image. Similarly, at the fixed angle θ2 with the Z axis, the tree root (origin) of the subject 77 at angles 1, 2, 3, and 4 is also taken to obtain four original images with an angle θ2 with the Z axis. the

Please refer to FIG. 8 , the original images with the same angle but different viewing angles can be interlaced through the above-mentioned first interlacing process to form a first interlaced image 73 and a second interlaced image 75 . Secondly, for the first interlaced image 73, the interlaced sub-image bar 731 represents the sub-image bar of the 1*I array whose angle with the Z axis is θ1 and the order of the viewing angle 1' is 1, 5, 9, etc.; The sub-image bar 732 represents the sub-image bar of the 1*I array whose included angle with the Z axis is θ1 and the order of the viewing angle 2′ is 2, 6, 10, etc.; the interlaced sub-image bar 733 indicates that the included angle with the Z-axis is θ1 and the sub-image bar of the 1*I array whose order of viewing angle 3' is 3, 7, 11, etc.; the interlaced sub-image bar 734 indicates that the angle with the Z axis is θ1 and the ordering of viewing angle 4' is 4, 8, 12 etc. 1*I array of sub-image strips. Secondly, for the first interlaced image 73, the interleaved sub-image strip 731 sorted 1 in the X direction includes pixels A11, A12, A13, A14, etc.; the interlaced sub-image strip 732 sorted 2 includes B21, B22, B23, B24, etc. Pixels: the interleaved sub-image bar 733 of order 3 includes pixels C31, C32, C33, C34, etc.; the interleaved sub-image bar 734 of order 4 includes pixels of D41, D42, D43, D44, etc. Also, for the first interlaced image 73, the interleaved sub-image strip 735 sorted 1 in the Y direction includes pixels such as A11, B21, C31, and D41; the interleaved sub-image strip 736 sorted 2 includes A12, B22, C32, D42, etc. pixels. the

Similarly, for the second interlaced image 75, the interlaced sub-image bar 751 represents a 1*I array of sub-image bars whose included angle with the Z axis is θ2 and the order of the viewing angle 1 is 1, 5, 9, etc.; The interleaving sub-image bar 752 represents the sub-image bar of the 1*I array whose included angle with the Z axis is θ2 and the order of the viewing angle 2 is 2, 6, 10, etc.; the interlaced sub-image bar 753 indicates that the included angle with the Z-axis is θ2 and the sub-image bar of the 1*I array whose angle of view 3 is sorted as 3, 7, 11, etc.; the interlaced sub-image bar 754 indicates that the included angle with the Z axis is θ2 and the sorting of the angle of view 4 is 4, 8, 12, etc. Equal 1*I array of sub-image strips. Secondly, for the second interlaced image 75, the interlaced sub-image strip 751 sorted 1 in the X direction includes pixels such as a11, a12, a13, a14, etc.; the interlaced sub-image strip 752 sorted 2 includes b21, b22, b23, b24, etc. Pixels: the interlaced sub-image strip 753 of order 3 includes pixels such as c31, c32, c33, and c34; the interleaved sub-image bar 754 of order 4 includes pixels such as d41, d42, d43, and d44. Also, for the second interlaced image 75, the interlaced sub-image strip 755 sorted 1 in the Y direction includes pixels such as a11, b21, c31, and d41; the interlaced sub-image strip 756 sorted 2 includes a12, b22, c32, d42, etc. pixels. the

Next, similar to FIG. 6 , the first interlaced image 73 and the second interlaced image 75 are subjected to a second interleaving process, and the direction of the second interlacing process is different from that of the first interlacing process. The direction of the second interleaving process is the Y direction, and the odd-numbered sub-image strips 735 of the first interlaced image 73 and the interlaced sub-image strips 756 of the even-numbered rows of the second interlaced image 75 are interleaved to form the combined image 74 . Therefore, the combined image 74 includes a part of the images of each viewing angle whose included angles with the Z axis are θ1 and θ2. When the lenticular lens sheet is used, the tree roots of the object 77 viewed from different angles can be observed by tilting the lenticular lens sheet. image. the

According to the above, the method for making combined images with interlaced images in the present invention is composed of a part of J interlaced images, where J is a positive integer greater than 2, and wherein:

(1) Sort the J interlaced images into a K-th interlaced image, where K is sequentially equal to multiple positive integers from 1 to J, that is, K=1,2,...J;

(2) Process the K-th interlaced image in a splitting manner parallel to the first direction, so as to form a plurality of rows of K-th interlaced sub-image strips of the K-th interlaced image;

(3) Select the K-th interlaced sub-image strips in the (K+J*L)-th column of the K-th interlaced image, where L is sequentially 0 and multiple positive integers greater than or equal to 1, that is, for the first interlaced As far as images are concerned, the first interleaved sub-image strips of the 1st, 1+J, 1+2J, etc. are selected for subsequent processing; and

(4) Interleave the K-th interleaved sub-image strips of the (K+J*L)-th column of the K-th interlaced images to form the combined image, and the second image period is equal to the K-th interlaced sub-image strips The sum of the widths of . the

Based on the above, the observer can observe the changing images of objects at different angles of view (whether with the X-axis, Y-axis or Z-axis) at a specific angle, and the dynamic image effect of motion changes. Therefore, through the columnar The design of the lens sheet and combined image can present a variety of different effects of the image. The above-mentioned combined image design can also be applied to the viewer who wants to see images at different angles and different viewing angles through the lenticular lens sheet of the present invention, so as to increase the diversity of combined images presented. the

Furthermore, regarding the above-mentioned matching of the lens period and the image period, it can be that the lens period and the image period are completely equal and completely overlapped (the angles are completely matched), and then the combined image can present changing, three-dimensional, and dynamic image effects. In another situation, the period of the lens and the period of the image are completely equal but not completely overlapped (with a certain oblique angle), so that the zoom-in or zoom-out effect of the combined image can be presented. In another case, the lens period is not equal to the image period, but there is only a slight difference between the two. For example, the image period is smaller than the lens period, and the difference between the two periods is only within 25%. The difference is only within 10% to show a more magnified image; therefore, using the difference between the lens period and the image period, combined with the thickness t of the lens, can make the combined image produce the effect of depth or height change. That is to say, the thickness of the lenticular lens sheet is used to present the visual effect that the combined image under the lenticular lens sheet has depth or height changes. the

Although the utility model is described by the above-mentioned embodiments, its shape and detail design can still be changed without departing from the creative spirit of the utility model. Those of ordinary skill in the art can understand that the above-mentioned preferred embodiment of the utility model is only one of the modes that can be implemented according to the principle of the utility model, but it is not limited thereto, and should be in accordance with the claims of the utility model The scope is defined. the

Claims (8)

1. An image display sheet, characterized in that it comprises: A lens array, the lens array includes a first surface on which a plurality of lenticular lenses are distributed and a second surface opposite to the first surface, wherein the lenticular lenses have a first surface in the first direction of the first surface A lens period and a second lens period in the second direction, the first direction is perpendicular to the second direction. the 2. The image display sheet according to claim 1, wherein the second surface of the lens array is provided with a plurality of combination units arranged in a two-dimensional array and the combination units are arranged on the first side. a combined image having a first image period upwards and a second image period in a second direction, wherein the first image period is equal to the first lens period or the second lens period, and the second image The period is equal to the first lens period or the second lens period; the combined image is produced, laminated, printed or arranged on the second surface through a carrier. the 3. The image display sheet as claimed in claim 1, wherein any one of the lenticular lenses includes four curved surfaces with the same curvature, and the size of each curved surface projected on the second surface is equal to the period of the first lens or The second lens period. the 4. The image display sheet according to claim 1, wherein any one of the lenticular lenses includes four curved surfaces with the same radius of curvature, and the size of each curved surface projected on the second surface is equal to the first lens period Or the second lens period, the distance between any of the curved surfaces most protruding from the first surface and the second surface is equal to 3 times the radius of curvature. the 5. A lens array, characterized in that it comprises a first surface distributed with a plurality of lenticular lenses and a second surface opposite to the first surface, wherein the lenticular lenses are in an X direction of the first surface There is a first lens period on the top and a second lens period on a Y direction. the 6. The lens array according to claim 5, wherein any one of the lenticular lenses comprises four curved surfaces with the same curvature, and the size of each curved surface projected on the second surface is equal to the first lens period or the second lens period. Two lens cycles. the 7. The lens array according to claim 5, wherein any one of the lenticular lenses comprises four curved surfaces with the same radius of curvature, and the size of each curved surface projected on the second surface is equal to the first lens period or the The second lens period; the distance between the most protruding from the first surface and the second surface of any of the curved surfaces is equal to 3 times of the radius of curvature. the 8. The lens array of claim 5, wherein the first lens period is equal to the second lens period. the

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