BRPI0621415A2 - three dimensional plastic sheet - Google Patents

Abstract

THREE-DIMENSIONAL PLASTIC SHEET. The present invention relates to a three-dimensional plastic sheet that forms an array of convex lenses having a plurality of semi-spherical convex lenses arranged horizontally and vertically on the surface thereof, such that a three-dimensional image can be clearly seen equally in all positions regardless of the position or direction of the plastic sheet, while greatly minimizing the generation of glossy patterns caused by the interference of different colored dots. The three-dimensional plastic sheet includes a layer of convex lens formed from a transparent synthetic resin and having an arrangement of identical semi-spherical convex lenses formed on the upper surface thereof; a transparent plate disposed on the lower surface of the convex lens layer and formed of a synthetic resin plate having a thickness that corresponds to the focal distance of each convex lens; a printed layer of non-focal distance arranged on the upper surface of the transparent plate by means of offset printing to provide a real image screen on it; and a printed layer of focal length arranged on the bottom surface of the transparent plate by means of offset printing to provide a three-dimensional screen on the same through the printing by dots of four colors computed and segmented by image by means of a computer graphic process.

Description

Patent Descriptive Report for "THREE-DIMENSION PLASTIC SHEET".

Technical Field

The present invention relates to a three-dimensional plastic foil that can be produced in large quantities by offset printing, and more particularly to a three-dimensional plastic foil having an arrangement of identical semi-spherical convex lenses formed on the upper surface, so that a three-dimensional image can be clearly seen equally in all positions regardless of the position or direction of the plastic sheet, while greatly minimizing the generation of glossy patterns caused by the interference of different colored dots.

Background Technique

Generally, a three-dimensional plastics sheet is formed of an Ienticular mesh having a semi-cylindrical lens arrangement, each having a spacing of about 0.5 mm formed on the upper surface of the sheet. In the case of a three-dimensional photographic print, the images of an object seen through the left and right eyes are each printed on a lenticular canvas, thus obtaining a three-dimensional image where the object appears to float in space or sumin. - in space when viewed through both eyes.

In this case, the lenticular screen showing the plurality of semicylindrical lenses arranged serially on the upper surface of the plastic sheet gives the three-dimensional effect exactly to the left and right sides with respect to the length direction of each lens, but does not. There is no three-dimensional effect to the top and bottom sides of the screen, such that the viewing angle for the three-dimensional image is limited.

On the other hand, a conventional three-dimensional plastic sheet is formed such that a printed surface viewed through a lens layer having a lens arrangement formed therein is therefore recognized to observe a desired three-dimensional image, where the surface The printed material is processed by ordinary offset printing for bulk production. At this point, the problem arises that the printed screen cannot be sharp and clear, as the conventional plastic sheet has no high resolution due to the embossing effect of the lens seen through the lens layer.

In addition, on an ordinary offset printing screen, numerous dots that make up the printed canvas are refracted into the lens layer to generate brilliant Patterns or bewildered illusion due to dot interference, so that a dot cannot be provided. sharper three-dimensional screen.

With conventional three-dimensional plastic sheet processed by offset printing, however, a simple three-dimensional image pattern should be displayed by printing in one color, which makes it difficult to display a three-dimensional effect through four-color printing. primary effects or special effects (eg bilateral transformation, movement and morphology effects) in a lenticular technique.

In some cases, of course, a three-dimensional method has been presented using the IP (integral photography) technique as introduced by M.G. Lippmann, France, 1908, which is not practical in use because it requires a high precision of working technique and a high resolution of photography technique.

Description of the Invention

Technical problem

Accordingly, the present invention has been created in view of the aforementioned problems occurring in the prior art, and its purpose is to provide a three-dimensional plastic sheet forming a convex lens array having a plurality of horizontally and vertically arranged semi-spherical convex lenses on the surface. so that a three-dimensional image can be clearly seen equally in all positions regardless of the position or direction of the plastic sheet, which adopts a three-dimensional method of integral photography as one of the conventional techniques for conducting the inverse tracking of the conventional photography method to reconstitute the photographed image as a computer graphic screen, and which is applied to offset printing through digital output, while obtaining the special effects in both full-frame and Ienticu techniques. - home, minimizing large Thus, the generation of Illuminated patterns commonly caused by offset printing to provide a sharper three-dimensional image is thus created in large quantities. Technical Solution

To achieve the above objective according to the present invention there is provided a three dimensional plastics sheet comprising: a convex lens layer formed of a transparent synthetic resin and having an arrangement of identical semispherical convex lenses formed on the upper surface thereof. ; a transparent plate disposed on the bottom surface of the convex lens layer and formed of a synthetic resin plate having a thickness corresponding to a focal length of each convex lens; a non-focal distance printed layer disposed on the upper surface of the transparent plate by offset printing to provide a true image screen thereon; and a focal distance printed layer disposed on the bottom surface of the transparent plate by offset printing to provide a three-dimensional screen thereon by computed and image-segmented four-color dot printing by means of a computer graphic process, wherein the convex lens layer is attached to the transparent plate with the non-focal distance printed layer and the focal distance printed layer disposed on the upper and lower surfaces thereof.

Advantageous Effects

As explained in the foregoing, according to the three-dimensional plastic card of this invention, when plastic card 1 is viewed through the convex lens layer 10, product images or person images printed on the ordinary printed surface will appear to float. in space or fading into space in the background with many figures printed on the special printed surface, thus providing a high quality three-dimensional effect, and since convex lenses have an identical semi-spherical shape, a three-dimensional image can be clearly seen equally in all positions regardless of the position or direction of the three-dimensional plastic sheet 1.

Additionally, the printed layers 31 and 32 formed on the upper and lower surfaces of the transparent plate 20 are processed by offset printing, thus allowing the plastic card 1 of this invention to be formed in large quantities. The focal length printed layer 32 is also processed by computed four-color dot printing and image segmentation by means of a computer graphics process as formed by enhancing the existing integral photography technique. Since the four-color dots (C, Μ, Υ, K) providing a high resolution have different optimized gradients, the generation of bright patterns or distorted illusion can be greatly suppressed, thus providing a better effect. three-dimensionally high resolution quality. This allows to satisfy the buying desires of modern consumers seeking exclusivity and a variety of designs, so that the plastic card compatibility of this invention can be greatly promoted.

Brief Description of the Drawings

Figure 1 is a perspective view showing a three dimensional plastic sheet according to a first embodiment of the present invention.

Figure 2 is an exploded perspective view showing the three-dimensional plastic sheet according to the first embodiment of the present invention.

Figure 3 is a sectional view showing the three-dimensional plastic sheet according to the first embodiment of the present invention.

Figure 4 is a partially enlarged sectional view showing the three-dimensional plastics sheet according to the first embodiment of the present invention.

Figure 5 is an exploded perspective view showing a three dimensional plastic sheet in accordance with the second embodiment of the present invention.

Figure 6 is a partially enlarged sectional view showing the three-dimensional imaging plastic sheet in accordance with the second embodiment of the present invention.

Figure 7 is a view showing the image of the special effect printed surface on a focal distance printed layer that is separated by a computer graphic process.

Figure 8 is an enlarged view showing a part of Figure 7 where the dot structure is enlarged by offset printing.

Figure 9 is a plan view showing convex lenses being disposed at a 45 ° inclination on a convex lens layer adopted in the present invention.

Figure 10 is a plan view showing convex lenses that are arranged at a 60 ° inclination on a convex lens layer adopted in the present invention.

Figure 11 is a view showing the inclination angles of the four color dots processed by offset printing.

Figure 12 is a sectional view showing a three-dimensional plastic sheet according to a third embodiment of the present invention.

Figure 13 is a perspective view showing the underside of the three dimensional plastic sheet according to the third embodiment of the present invention.

Best Mode for Performing the Invention

The drawings below show the most desirable example of a structure of the invention. The part number of each part is valid for all drawings.

As shown in Figures 1 to 4, a convex lens layer 10 is disposed on the uppermost surface of the three-dimensional plastics sheet 1.

The convex lens layer 10 is formed of a transparent synthetic resin by molding such that it has an arrangement of identical semi-spherical convex lenses 11 formed vertically and horizontally on the upper surface thereof.

The convex lenses 11 of the convex lens layer 10 are disposed as shown in Figure 9 at a 45 ° inclination such that the imaginary lines passing the centers of the convex lens 11 have a crossover angle. 90 °.

In some cases, convex lenses 11 are arranged, as shown in Figure 10, at an inclination of 60 ° such that the imaginary lines passing the centers of convex lenses 11 have a crossover angle of 60 °. °. In preferred embodiments of the present invention, however, convex lenses 11 preferably have a 45 ° inclination.

A transparent plate 20, which is formed of a transparent synthetic resin, is disposed on the lower surface of the convex lens layer 10, in which case the transparent plate 20 is the same thickness as a focal length of each convex lens 11.

A non-focal distance printed layer 31 is arranged on the upper surface of the transparent plate 20 by offset printing to provide a real image screen thereon.

The non-focal distance print layer 31 has a common printed surface which is a portion placed on the special effect printed surface of a focal distance printed layer 32 to provide a three dimensional screen thereon, as will be discussed. The common printed surface is displayed with person images, product photographs, various patterns, and so on.

At this time, the special effect printed surface of the focal length printed layer 32 is used to display the three-dimensional effect or special effect of the pattern continuously formed from top to bottom and left to right. of the same.

As a result, differences in depth detections and visual differences in special effects can be recognized between the special effect printed surface (featuring a non-dimensional effect, a three-dimensional effect, a motion effect, a transform effect, and the like). ) of the focal length printed layer 32 and the common printed surface of the non-focal distance printed layer 31.

The focal length printed layer 32 is arranged on the bottom surface of the transparent plate 20 by offset printing to provide the three-dimensional screen by computed and image segmented four-color dot printing by a computer graphics process. such that the three-dimensional screen can be seen through the convex lens layer 10.

The focal length printed layer 32 is formed by four-color dot printing having the same ranges and arrangements as convex lenses 11, and as shown in Figures 7 and 8, is formed by segmenting the image in the graphics process. Computer Image segmentation is formed in such a way as to conduct image segmentation simultaneously to the left and right Ienticular Screen and to the upper and lower Ienticular Screen, thus providing the printed screen.

The convex lens layer 10 is bonded to the transparent layer 20 with the printed layers 31 and 32 disposed therein by lamination or adhesive.

Mode for the Invention

According to the above construction of the three-dimensional plastic sheet 1 according to the present invention, the images between the common printed surface of the non-focal distance printed layer 31 and the special effect printed surface of the printed non-focal printed layer. focal lengths 32 are seen as a sharper printed screen where bright patterns that cause a bewildered illusion do not occur in them. In addition, the common printed surface of the focal distance printed layer 31 and the special effect printed surface of the distance printed layer 32 exhibit the differences in depth detections or special effects therebetween, thus achieving a high quality image. special image.

On the other hand, the focal distance printed layer 32 screen is in a range that displays the three-dimensional effects, special effects, or common background effects, using real images, pictures, patterns, and so on. Also, Glossy patterns and a draft printed state, which can generally be generated on the three dimensional plastic sheet 1, should be removed from the focal distance printed layer screen 32.

However, if the focal-distance printed layer 32 is formed by ordinary offset printing, it will be difficult to achieve a clear offset printed screen. This is due to the fact that the three-dimensional leaf forms the three-dimensional effect by refraction of light transmitted through convex lenses 11 and by binocular disparity in humans. That is, the convex lenses 11 constituting the convex lens layer 10 serve to refract numerous points in the printed focal length layer 32 through the offset printing, which results in the generation of bewildered illusion on the printed screen.

Therefore, as shown in Figure 11, the printed point angles are adjusted such that they differ greatly from the arrangement angles of the semi-spherical convex lenses 11 to have widely differing angles, which preferably causes the generation Glossy standards is substantially suppressed.

The primary color print of the focal length printed layer 32 is formed from four primary colors of C (cyan), M (magenta), Y (yellow), and K (black), and the printed dots that make up the offset printing must be have a high resolution (Ipi).

That is, as appreciated from Table 1, the point angles can be varied according to the density of the convex lens arrangement 11. For example, if the density of the convex lens 11 is 80lpi (which indicates the number of lines vertically and horizontally within an area of 1 inch (2.54 cm)), if the slope with respect to a horizontal line is 45 °, and if the point density is 400lpi, the angles of points where the Illuminated pattern is hardly generated or the bewildered illusion will be about 19.5 °, 27.5 °, 62.5 ° and 70.5 °. Since the convex lens angles 11 intersecting the points are 90 °, they are identical to about 109.5 °, 117.5 °, 152.5 ° and 160.5 °.

Since common offset printing is conducted at a resolution of 175 Ipi, the three-dimensional plastic sheet 1 of this invention exhibits better effects as the resolution becomes higher, ie the Ipi reaches 200, 300 and 400. .

The angles of the displaced points that allow the generation of the Iustrous patterns to be minimized vary as shown in Table 1 according to the degrees of resolution, and the four color points (C, Μ, Υ, K) select any of the angles listed below in their respective degrees of resolution, so as to present different angles to each other, thereby establishing their respective inclinations.

Table 1

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In addition, the non-focal length printed layer 31, which is disposed on the upper surface of the transparent plate 20, forms the common printed surface, and since the common printed surface, which is processed by printing on The four-color offset is positioned within the non-focal length of the convex lens layer 10, the refraction and distortion of the convex lens is minimized to provide a sharper screen with person images or figures where glossy patterns and draft print disappear. thus protecting the functional effect of the convex lens layer 10.

Since the special effect printed surface of the focal distance printed layer 32 and the common printed surface of the non-focal distance printed layer 31 are arranged on the upper and lower surfaces of the transparent plate 20, the effects that can be seen through the convex lens layer 10 are differently displayed. That is, product images or person images printed on the common printed surface appear to float in space or fade into the background space with many figures printed on the special printed surface, thus providing a high quality three-dimensional effect. for the three-dimensional plastics sheet of this invention.

On the other hand, as shown in Figures 5 and 6, a generally flat viewport 12 is partially formed on the convex lens layer 10, and the non-focal length printed layer 31 is partially formed on the focal length printed layer. 32, such that it is arranged well below the viewing window 12.

Of course, the non-focal distance printing layer 31 may be arranged on the upper surface of the transparent plate 20. Preferably, however, when the non-focal distance printed layer 31 is formed on the portion of the focal distance printed layer 32, printing efficiency could be further improved.

The viewing window 12 is formed by applying a transparent resin to a portion of the convex lens layer 10 and hardening the applied transparent resin and may in some cases be formed by pressurizing and heating a mold plan. In accordance with preferred embodiments of the present invention, methods for forming viewing window 12 may be appropriately selected within the spirit and scope of this invention.

As mentioned above, the formation of the flat viewport 12 in the convex lens layer 10 confers some advantages, that is, the printed screen may be sharper compared to text or thin figures on the common printed surface of the convex lens layer. non-focal length 31, a high print resolution can be achieved, and the plastic sheet looks like a transparent material.

Although the common printed surface of the non-focal distance printed layer 31 exhibits high resolution, the formation of the viewing window 12 prevents the resolution of the non-focal distance printed layer 31 from decreasing due to interference from convex lenses 11. refraction of light and additionally overcomes the problem that the resolution of the common printed surface is determined only within the density of convex lenses 11 in the convex lens layer 10.

On the other hand, as shown in Figures 12 and 13, instead of the focal length printed layer 32, an embossing pattern arrangement 33 is formed on the bottom surface of the transparent plate 20. A plurality of slots 33a, which are formed between the respective relief patterns 33 may be arranged at the focal positions of the respective convex lenses 11.

In this case, a large and sharp three-dimensional effect is obtained such that the product or person images on the ordinary printed surface appear to float in space or fade into space on a background where three-dimensionally salient relief patterns are formed. 33.

Embossing patterns 33 are formed by applying a transparent resin to the bottom surface of the transparent plate 20 and hardening the applied transparent resin, and in some cases may be formed by pressurizing and heating a mold. formed of an arrangement of grooves against the bottom surface of the transparent plate 20. In accordance with preferred embodiments of the present invention, the methods for forming the relief patterns 33 may be appropriately selected within the spirit and scope of this invention.

While the present invention has been described with reference to specific illustrative embodiments, it should not be limited by embodiments, but only by the appended claims, and therefore, it should be understood that other modifications and variations may be made without departing from the substance. and scope of the present invention, as will be readily appreciated by those skilled in the art. Such alternative modifications and variations are within the scope of the present invention, which is intended to be limited by the appended claims and equivalents thereof.

Claims (4)

A three-dimensional plastics sheet comprising: a convex lens layer formed of a transparent synthetic resin and having an arrangement of identical semi-spherical convex lenses formed on the upper surface thereof; a transparent plate disposed on the bottom surface of the convex lens layer and formed of a synthetic resin plate having a thickness corresponding to a focal length of each convex lens; a non-focal distance printed layer disposed on the upper surface of the transparent plate by offset printing to provide a true image screen thereon; and a focal length printed layer disposed on the bottom surface of the transparent plate by offset printing to provide a three-dimensional screen on it by printing four-color computed and image segmented dots by means of a computer graphics process. wherein the convex lens layer is attached to the transparent plate with the non-focal distance printed layer and the focal distance printed layer disposed on the upper and lower surfaces thereof. A three-dimensional plastics sheet according to claim -1, wherein a generally flat viewing window is partially formed on the convex lens layer, and the non-focal distance printed layer is partially formed on the distance printed layer. focus in such a way as to be arranged well below the viewport. A three-dimensional plastics sheet according to claim -1, wherein, instead of the focal distance printed layer, an arrangement of relief patterns is formed on the bottom surface of the transparent plate, and a plurality of grooves that are formed between the respective relief patterns are arranged at the focal positions of the respective convex lenses. A three-dimensional plastics sheet according to claim -1, wherein the four-point inclined angles of four colors (C, Μ, Y, K) processed by offset printing are adjusted to differ according to each other. with the density of convex lenses arranged on the convex lens layer to minimize the generation of luscious patterns or bewildered illusion on the printed screen.