Decorative device

Abstract

To provide a decorative device that is rich in variations and interesting even thought it has two pattern layers, the first pattern layer and the second pattern layer.SOLUTION: Two pattern layers, a first pattern layer (W1) and a second pattern layer (W2), are formed by arranging shading parts and light-transmitting parts in multiple rows alternately along a predetermined direction. This allows two moire images, a moire image (MA) on one side and a moire image (MB) on the other side, to be visible. When one viewpoint A is moved along an X-axis direction or when one viewpoint A is fixed and either the first pattern layer (W1) or the second pattern layer (W2) is moved along the X-axis, the moire image (MA) on one side and the moire image (MB) on the other side move relative to each other regularly in a predetermined cycle.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a decoration device in which a plurality of pattern layers in which light-shielding portions and light-transmitting portions are alternately arranged in a plurality of rows along a predetermined direction are laminated with a space therebetween, and a moiré image is visually recognized when the pattern layer is viewed from the outside.

Background Art

[0002] Conventionally, as this type of decoration device, for example, the one described in Japanese Patent No. 3131771 (Patent Document 1) is known. This includes a first pattern layer having a pattern formed on one surface of a transparent sheet and consisting of a plurality of light-transmitting portions repeated at a predetermined pitch, and a second pattern layer formed on the other surface of the transparent sheet and having a pattern similar to the pattern of the first pattern layer. These pattern layers form a rectangular moiré image formed vertically in a plurality at a predetermined period. Further, a third pattern layer having a pattern such as a bird is interposed between the first pattern layer and the second pattern layer so that the pattern appears in the moiré image formed by the first pattern layer and the second pattern layer.

[0003] Also, the inventor of the present application has previously proposed the technology described in Japanese Patent No. 7053080 (Patent Document 2). This includes a first pattern layer having a first pattern set portion having a plurality of light-transmitting portions partitioned by the contour lines of the light-shielding portions, a second pattern layer having a second pattern set portion, and a third pattern layer having a third pattern set portion. These are stacked in order with a space therebetween, and a moiré image specified as one lump visually recognized when the outermost pattern layer is viewed from the outside is defined as a specific moiré image, and this specific moiré image is formed by sharing among sets of adjacent pattern layers. That is, one-side moiré images related to the sharing of the specific moiré image are formed by the first pattern set portion and the second pattern set portion, and the other-side moiré images related to the sharing of the specific moiré image are formed by the second pattern set portion and the third pattern set portion.

Prior Art Documents

Patent Documents

[0004] Patent Document 1 Japanese Patent No. 3131771 Patent Document 2 Japanese Patent No. 7053080 Summary of the Invention Problems to be Solved by the Invention

[0005] By the way, in the former conventional decoration device, a moiré image is formed by the first pattern layer and the second pattern layer. However, there is a problem that the moiré image that appears is unambiguous, lacks variation, and is lacking in interest. Conventionally, a third pattern layer is provided, but this only shows the pattern and does not contribute to the change of the moiré image itself because it does not have the function of forming a moiré image by the light-transmitting part (light-shielding part).

[0006] On the other hand, in the latter conventional decoration device, since a moiré image is formed by sharing with the third pattern layer, by relatively changing the positional relationship between the sets of adjacent pattern layers, the moiré image viewed from one outer viewpoint can be expressed as a moiré image having a different shape from the specific moiré image. Therefore, it is richer in variation, has more degrees of freedom, and has more interest than the former conventional decoration device. However, the number of parts increases by providing the third pattern layer, and accordingly, the efficiency of manufacturing and the like is impaired.

[0007] The present invention has been made in view of the above points, and an object thereof is to provide a decorative device that is rich in variation and interesting even with two pattern layers, namely, a first pattern layer and a second pattern layer. Means for Solving the Problems

[0008] The decorative device of the present invention for achieving the above object is a decorative device in which two pattern layers in which light-transmitting parts and light-shielding parts are alternately arranged in a plurality of rows along a predetermined direction are laminated with a space therebetween, and a moiré image is visually recognized when the two pattern layers are viewed from the outside. The above two pattern layers are, in order from the viewing side, the first pattern layer (W1) and the second pattern layer (W2). An X-axis passing through the origin O is set along the plane direction of the pattern layer and along the predetermined direction, a Y-axis passing through the origin O and perpendicular to the X-axis is set along the plane direction of the pattern layer, and a Z-axis passing through the origin O and perpendicular to the plane direction of the pattern layer and defining a spacing is set in the stacking direction of the pattern layer. On an arbitrary cross-section cut by a plane perpendicular to the Y-axis, a moiré image identified by visual recognition from one viewing point A on the outer side in the Z-axis direction is composed of two moiré images, i.e., one-side moiré image (MA) and the other-side moiré image (MB). When the one viewing point A is moved along the X-axis direction, or when the one viewing point A is fixed and either the first pattern layer (W1) or the second pattern layer (W2) is moved along the X-axis, the one-side moiré image (MA) and the other-side moiré image (MB) are configured to move regularly relative to each other. Here, a light-shielding portion exists between adjacent light-transmitting portions, and a light-transmitting portion exists between adjacent light-shielding portions.

[0009] Here, the one-side moiré image (MA) and the other-side moiré image (MB) refer to images (interference fringes) having a predetermined form such as a figure, character, symbol, etc. that can be visually recognized as one mass. It may be either symmetric or asymmetric. Also, the one-side moiré image (MA) and the other-side moiré image (MB) can be made mirror-symmetric to each other, or have the same shape, or be similar shapes.

[0010] Here, the meaning of overlapping the pattern layers with a gap means that a gap is necessary when the thickness t of the pattern layer is t=0. When the thickness t of the pattern layer is t>0, for example, when the pattern layer is created by opening a light-transmitting portion on a sheet of a predetermined thickness, or when the pattern layer is created by printing a light-shielding portion on a transparent sheet, even if the pattern layers are closely stacked, there is a gap of the thickness of the sheet. The larger the gap, the more three-dimensional the moire image becomes. The black first pattern layer (W1) and second pattern layer (W2) shown in this drawing are, for example, front views of black paper with a thickness t=0.15 mm on which light-transmitting portions are formed using, for example, a laser processing machine, and the one-side moire image (MA) and the other-side moire image (MB) shown in the drawing are visually recognized when the first pattern layer (W1) and the second pattern layer (W2) are closely stacked.

[0011] As a result, when the first pattern layer (W1) and the second pattern layer (W2) are overlapped, two moire images, one side moire image (MA) and the other side moire image (MB), are visually recognized. Then, when one viewpoint A is moved along the X-axis direction, or when one viewpoint A is fixed and either the first pattern layer (W1) or the second pattern layer (W2) is moved along the X-axis, the one side moire image (MA) and the other side moire image (MB) move regularly relative to each other. Therefore, the moire images change, which makes it more interesting. In addition, since the pattern layers that form the moire images that change with each other are the first pattern layer (W1) and the second pattern layer (W2), the number of parts can be reduced compared to the conventional technology, the structure can be simplified, and the manufacturing efficiency can be improved.

[0012] If necessary, the one-side moire image (MA) and the other-side moire image (MB) are each formed in a plurality of portions at a predetermined period along the X-axis direction when viewed from the one viewpoint A. Compared to a case where one one-side moire image (MA) and one other-side moire image (MB) are each formed, a plurality of one-side moire images (MA) and other other-side moire images (MB) having the same shape are formed, which can add even more interest.

[0013] In this case, if necessary, the period of the above-mentioned one-sided moire image (MA) and the period of the other-sided moire image (MB) are made different, and when viewed from the above one viewpoint A, the number of visible ones of the above one-sided moire image (MA) and the other-sided moire image (MB) is made different. Thus, since the moire image with the shorter period can be made to appear more numerous than the moire image with the longer period, the interest can be further increased. Figures 65 to 70 (Example 3 described later), Figures 71 to 76 (Example 4 described later), etc. are examples in which the number of visible ones of the other-sided moire image (MB) is made larger than that of the one-sided moire image (MA).

[0014] Also, if necessary, the above-mentioned one-sided moire image (MA) is composed of a transmissive moire that transmits light or a light-shielding moire that blocks light, and the above-mentioned other-sided moire image (MB) corresponds to the above-mentioned one-sided moire image (MA) and is composed of a transmissive moire that transmits light or a light-shielding moire that blocks light. Thereby, when the moire image is a transmissive moire, it is visually recognized in a state where light is transmitted, and when the moire image is a light-shielding moire, it is visually recognized in a state where light is blocked. The transmissive moire is shown in Figures 4 to 8, Figure 9, Figure 11, Figure 13(a), Example 1 described later (Figures 53 to 58), Example 4 (Figures 71 to 76), Example 5 (Figures 77 to 81), a modified example of Example 5 (Figures 82 to 84), Example 6 (Figures 85 to 89), a modified example of Example 6 (Figures 90 to 92), Example 7 (Figures 93 to 97), Example 8 (Figures 98 to 103), Example 9 (Figures 104 to 108), Example 11 (Figures 114 to 118), Example 13 (Figures 124 to 128), Example 14 (Figures 129 to 133), Example 15 (Figures 134 to 138). The light-shielding moire is shown in Figures 10, 12, Figure 13(b), Example 2 described later (Figures 59 to 64), Example 3 (Figures 65 to 70), Example 10 (Figures 109 to 113), Example 12 (Figures 119 to 123).

[0015] Also, if necessary, a transmissive pattern set portion (TPA) is composed of a single transmissive portion or a plurality of transmissive portions arranged in a row in the Y-axis direction, and is a set of unit transmissive portion patterns of a predetermined shape having a center line. The unit transmissive portion patterns are regularly arranged at a predetermined pitch along the X-axis direction. And a light-shielding pattern set portion (SPA) is composed of a single light-shielding portion or a plurality of light-shielding portions arranged in a row in the Y-axis direction, and is a set of unit light-shielding portion patterns of a predetermined shape having a center line. The light-shielding portion patterns are regularly arranged at a predetermined pitch along the X-axis direction. These are used. <In the case of the above transmissive moiré> Respectively, a first pattern set portion (PA1), a second pattern set portion (PA2), and a common pattern set portion (PA3) composed of transmissive pattern set portions (TPA) in which the shapes and pitches of the unit transmissive portion patterns are different are used. The first pattern set portion (PA1) is formed on the first pattern layer (W1), the second pattern set portion (PA2) is formed on the second pattern layer (W2), and the common pattern set portion (PA3) is formed on either the first pattern layer (W1) or the second pattern layer (W2).

[0016] <In the case of the above light-shielding moiré> Respectively, a first pattern set portion (PA1) and a common pattern set portion (PA3) composed of light-shielding pattern set portions (SPA) in which the shapes and pitches of the unit light-shielding portion patterns are different, and a second pattern set portion (PA2) composed of transmissive pattern set portions (TPA) in which the shapes and pitches of the unit light-shielding portion patterns of the first pattern set portion (PA1) and the common pattern set portion (PA3) are different from those of the unit transmissive portion patterns are used. The first pattern set portion (PA1) and the common pattern set portion (PA3) are formed on the first pattern layer (W1), and the second pattern set portion (PA2) is formed on the second pattern layer (W2). Or A first pattern set portion (PA1) composed of a light-transmitting portion pattern set portion (TPA), and a second pattern set portion (PA2) and a shared pattern set portion (PA3) each composed of a light-shielding portion pattern set portion (SPA) in which the shapes and pitches of the unit light-shielding portion patterns are different from those of the unit light-transmitting portion patterns of the first pattern set portion (PA1) are used. The first pattern set portion (PA1) is formed on a first pattern layer (W1), and the second pattern set portion (PA2) and the shared pattern set portion (PA3) are formed on a second pattern layer (W2).

[0017] And The one-side moiré image (MA) is formed by the first pattern set portion (PA1) and the second pattern set portion (PA2). The other-side moiré image (MB) When the shared pattern set portion (PA3) is formed on the first pattern layer (W1), it is formed by the shared pattern set portion (PA3) and the second pattern set portion (PA2). When the shared pattern set portion (PA3) is formed on the second pattern layer (W2), it is configured to be formed by the first pattern set portion (PA1) and the shared pattern set portion (PA3).

[0018] As will be described later, FIGS. 2(a), (c), (e), (g), (i), (k), (m), (o), (q), and (s) show examples in which the unit light-transmitting portion pattern 10A is composed of one light-transmitting portion 4. FIGS. 2(b), (d), (f), (h), (j), (l), (n), (p), (r), and (t) show examples in which the unit light-transmitting portion pattern 10A is composed of a plurality of light-transmitting portions 4 arranged in a row in the Y-axis direction. Further, FIGS. 3(a), (c), (e), (g), (i), (k), (m), (o), (q), and (s) show examples in which the unit light-blocking portion pattern 10B is composed of one light-blocking portion 3. FIGS. 3(b), (d), (f), (h), (j), (l), (n), (p), (r), and (t) show examples in which the unit light-blocking portion pattern 10B is composed of a plurality of light-blocking portions 3 arranged in a row in the Y-axis direction. Here, arranging in a row in the Y-axis direction means that the light-transmitting portions 4 or the light-blocking portions 3 are arranged so to speak upward, and it is not necessarily along an axis parallel to the Y-axis, and the center line may be inclined or curved with respect to the Y-axis. Also, when the unit light-transmitting portion pattern is composed of a plurality of light-transmitting portions arranged in a row in the Y-axis direction, or when the unit light-blocking portion pattern is composed of a plurality of light-blocking portions arranged in a row in the Y-axis direction, in the Y-axis direction, the number of light-transmitting portions, the number of light-blocking portions, the length of the light-transmitting portions, and the length of the light-blocking portions may be determined as appropriate.

[0019] Thereby, the common pattern set portion (PA3) is formed in the first pattern layer (W1) having the first pattern set portion (PA1) or the second pattern layer (W2) having the second pattern set portion (PA2), so that the design becomes easier and the manufacturing can be facilitated. In this case, when the unit light-transmitting portion pattern is configured by arranging a plurality of light-transmitting portions in a row in the Y-axis direction, in the unit light-transmitting portion pattern, since a light-blocking portion is interposed between the light-transmitting portions, when the pattern layer is configured by opening light-transmitting portions in a thin sheet, for example, the strength of the sheet can be increased by the light-blocking portion. As shown in FIG. 145, when a plurality of light-blocking portions 3 are arranged in a row in the Y-axis direction, in the unit light-blocking portion pattern 10B, it cannot be formed by cutting a thin sheet, so it is formed, for example, by printing the light-blocking portions 3 on a transparent sheet 30.

[0020] Here, the principle is demonstrated by taking the case of transmissive moiré. FIGS. 4 to 8, FIG. 9, and FIG. 13(a) show the principle diagrams of transmissive moiré when the common pattern set portion (PA3) is formed in the first pattern layer (W1). For example, one-side moiré image (MA) shown in FIG. 6(a) is formed by the first pattern set portion (PA1) shown in FIG. 4(a) and the second pattern set portion (PA2) shown in FIG. 4(b). On the other hand, the other-side moiré image (MB) shown in FIG. 6(b) is formed by the common pattern set portion (PA3) shown in FIG. 5(a) and the second pattern set portion (PA2) shown in FIG. 4(b). Then, as shown in FIGS. 5(b) and 9, for example, in the first pattern layer (W1), the first pattern set portion (PA1) and the common pattern set portion (PA3) are formed. That is, two pattern set portions are synthesized in one pattern layer. As shown in FIGS. 4(b) and 9, the second pattern set portion (PA2) is formed in the second pattern layer (W2). Thus, as shown in FIG. 6(c), when the first pattern layer (W1) and the second pattern layer (W2) are stacked in order from the viewing side, two moiré images, namely the one-side moiré image (MA) and the other-side moiré image (MB), are visually recognized.

[0021] Then, as shown in FIGS. 7 and 8, when one viewpoint A is moved along the X-axis direction, or when one viewpoint A is fixed and either the first pattern layer (W1) or the second pattern layer (W2) is moved along the X-axis, the one-side moiré image (MA) and the other-side moiré image (MB) move relative to each other regularly at a predetermined period.

[0022] FIG. 11 shows the case where the common pattern set portion (PA3) is formed in the second pattern layer (W2) in transmissive moiré. The principle in the case of opaque moiré is the same. FIGS. 10 and 13(b) show the principle diagrams of opaque moiré when the common pattern set portion (PA3) is formed in the first pattern layer (W1). FIG. 12 shows the case where the common pattern set portion (PA3) is formed in the second pattern layer (W2) in opaque moiré.

[0023] Also, if necessary, each unit transmissive portion pattern of the first pattern set portion (PA1) is formed in the same shape with parallel axes to each other. Each unit light-transmitting part pattern of the second pattern set part (PA2) is formed into the same shape having parallel axes with respect to each other. Each unit light-transmitting part pattern of the shared pattern set part (PA3) is formed into the same shape having parallel axes with respect to each other. When forming the shared pattern set part (PA3) on the first pattern layer (W1), each of these unit light-transmitting part patterns is formed into the same shape having parallel axes with respect to each other. When forming the shared pattern set part (PA3) on the second pattern layer (W2), it is configured such that each of these unit light-transmitting part patterns is formed into the same shape having parallel axes with respect to each other.

[0024] For example, as shown in FIG. 4(a), in the first pattern layer (W1), the first pattern set part (PA1) and the shared pattern set part (PA3) are composed of a plurality of rectangular light-transmitting parts in which the unit light-transmitting part patterns are arranged with their axes perpendicular in the Y-axis direction. As shown in FIG. 4(b), in the second pattern layer (W2), the second pattern set part (PA2) is composed of a plurality of elongated parallelogram light-transmitting parts in which the unit light-transmitting part patterns are arranged with their axes slightly inclined in the Y-axis direction.

[0025] Thereby, in the first pattern layer (W1) and the second pattern layer (W2), each of the unit light-transmitting part patterns formed therein has a shape having parallel axes and contour lines with respect to each other, so that the shape becomes simple, and accordingly, the design becomes easier and the manufacturing can be facilitated.

[0026] Furthermore, if necessary, a setting in which the one-side moiré image (MA) is visible behind the second pattern layer (W2) and the other-side moiré image (MB) is visible in front of the first pattern layer (W1), A setting in which the one-side moiré image (MA) is visible behind the second pattern layer (W2) and the other-side moiré image (MB) is visible behind the second pattern layer (W2). The first pattern set portion (PA1), the second pattern set portion (PA2), and the shared pattern set portion (PA3) are configured such that either the above-described one-side moiré image (MA) is visible in front of the first pattern layer (W1) or the other-side moiré image (MB) is visible in front of the first pattern layer (W1). This creates diversity in the way moiré appears.

[0027] As shown in FIG. 14, FIGS. 14(a) and (c) show the case where the one-side moiré image (MA) is visible behind the second pattern layer (W2) and the other-side moiré image (MB) is visible in front of the first pattern layer (W1), FIGS. 14(b) and (d) show the case where the one-side moiré image (MA) is visible behind the second pattern layer (W2) and the other-side moiré image (MB) is visible behind the second pattern layer (W2), and FIGS. 14(e) and (f) show the case where the one-side moiré image (MA) is visible in front of the first pattern layer (W1) and the other-side moiré image (MB) is visible in front of the first pattern layer (W1). Regarding the case where the one-side moiré image (MA) is visible in front of the first pattern layer (W1) and the other-side moiré image (MB) is visible behind the second pattern layer (W2), in the case of FIGS. 14(a) and (c), since the relationship between the one-side moiré image (MA) and the other-side moiré image (MB) is reversed, this can be achieved by defining them in reverse.

Advantages of the Invention

[0028] According to the present invention, when the first pattern layer (W1) and the second pattern layer (W2) are overlapped, two moiré images, i.e., one-side moiré image (MA) and the other-side moiré image (MB), can be visually recognized. Then, when one viewpoint A is moved along the X-axis direction, or when one viewpoint A is fixed and either the first pattern layer (W1) or the second pattern layer (W2) is moved along the X-axis, the one-side moiré image (MA) and the other-side moiré image (MB) regularly move relative to each other at a predetermined period. Therefore, since the moiré image changes, the diversity increases and the interestingness can be enhanced. Further, since the pattern layers forming the mutually changing moiré images are two, i.e., the first pattern layer (W1) and the second pattern layer (W2), the number of components can be reduced as compared with the conventional case, the structure can be simplified, and the manufacturing efficiency can also be improved.

Brief Description of Drawings

[0029]

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Embodiments for Carrying Out the Invention

[0031] Hereinafter, the decoration device according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings. As shown in FIGS. 1(a) and 1(b), the decoration device T according to the embodiment is a screen, and includes a rectangular frame-shaped main body 1 and legs 2 provided on the main body 1 for standing up and supporting the main body 1. On the main body 1, two pattern layers in which light-shielding parts 3 and light-transmitting parts 4 are alternately arranged in a plurality of rows along a predetermined direction are laminated with a space therebetween, and when these two pattern layers are viewed from the outside, a moiré image is visually recognized.

[0032] As shown in FIGS. 1(a) and 1(b), the two pattern layers are, in order from the viewing side, the first pattern layer W1 and the second pattern layer W2. An X-axis passing through the origin O is set along the plane direction and a predetermined direction of the pattern layers, a Y-axis passing through the origin O and perpendicular to the X-axis is set along the plane direction of the pattern layers, and a Z-axis passing through the origin O and perpendicular to the plane direction of the pattern layers and defining an interval in the stacking direction of the pattern layers is set. On an arbitrary cross-section cut by a plane perpendicular to the Y-axis, a moiré image identified when viewed from one viewing point A on the outer side in the Z-axis direction is composed of two moiré images, i.e., one-side moiré image MA and the other-side moiré image MB. When one viewing point A is moved along the X-axis direction, the light-shielding portions 3 and the light-transmitting portions 4 of the first pattern layer W1 and the second pattern layer W2 are formed such that the one-side moiré image MA and the other-side moiré image MB regularly move relative to each other with a predetermined period.

[0033] In the embodiment, in the decoration device T, as shown in FIG. 1(b), the first pattern layer W1 and the second pattern layer W2 are fixed to the main body 1 with an interval d therebetween. Each pattern layer W1, W2 is formed of, for example, a plate material such as a resin plate, a metal plate, a wooden plate, or paper, or a sheet material. The light-shielding portions 3 and the light-transmitting portions 4 are formed, for example, by opening holes of the light-transmitting portions 4 in the plate material or the sheet material with a laser processing machine or the like, or by printing the light-shielding portions 3 on a transparent sheet material or the like. In FIG. 1(a), although the moiré image shows a transmissive moiré to be described later, since the light-transmitting portions 4 of the first pattern layer W1 and the second pattern layer W2 are difficult to illustrate, the light-transmitting portions 4 are represented by solid lines, the light-shielding portions 3 are represented by white portions, and the moiré image is also represented in black.

[0034] Also, in the embodiment, when viewed from one perspective A, a plurality of one-side moiré images MA and the other-side moiré images MB can be visually recognized at a predetermined period along the X-axis direction, respectively. In this case, the period of the one-side moiré image MA and the period of the other-side moiré image MB can be made different, and when viewed from one perspective A, the number of the one-side moiré images MA and the other-side moiré images MB that can be visually recognized can be made different. In the examples of FIGS. 1, 4 to 8, the numbers of the one-side moiré images MA and the other-side moiré images MB are the same. FIGS. 65 to 70 (Example 3 described later), FIGS. 71 to 76 (Example 4 described later), etc. are examples in which the number of the other-side moiré images MB that can be visually recognized is larger than that of the one-side moiré images MA.

[0035] Furthermore, the one-side moiré image MA is composed of a transmissive moiré that transmits light or an opaque moiré that blocks light, and the other-side moiré image MB corresponds to the one-side moiré image MA and is composed of a transmissive moiré that transmits light or an opaque moiré that blocks light. The transmissive moiré is shown in FIGS. 4 to 8, FIG. 9, FIG. 11, FIG. 13(a), Example 1 (FIGS. 53 to 58) described later, Example 4 (FIGS. 71 to 76), Example 5 (FIGS. 77 to 81), a modified example of Example 5 (FIGS. 82 to 84), Example 6 (FIGS. 85 to 89), a modified example of Example 6 (FIGS. 90 to 92), Example 7 (FIGS. 93 to 97), Example 8 (FIGS. 98 to 103), Example 9 (FIGS. 104 to 108), Example 11 (FIGS. 114 to 118), Example 13 (FIGS. 124 to 128), Example 14 (FIGS. 129 to 133), Example 15 (FIGS. 134 to 138). The opaque moiré is shown in FIGS. 10, 12, FIG. 13(b), Example 2 (FIGS. 59 to 64) described later, Example 3 (FIGS. 65 to 70), Example 10 (FIGS. 109 to 113), Example 12 (FIGS. 119 to 123).

[0036] Specifically, in the embodiment, it uses a light-transmitting pattern set portion TPA which is composed of one light-transmitting portion 4 or a plurality of light-transmitting portions 4 arranged in a row in the Y-axis direction and is a set of unit light-transmitting pattern 10A of a predetermined shape having a center line Q, and the unit light-transmitting pattern 10A is regularly arranged at a predetermined pitch along the X-axis direction, and a light-shielding pattern set portion SPA which is composed of one light-shielding portion 3 or a plurality of light-shielding portions 3 arranged in a row in the Y-axis direction and is a set of unit light-shielding pattern 10B of a predetermined shape having a center line Q, and the light-shielding pattern 10B is regularly arranged at a predetermined pitch along the X-axis direction.

[0037] FIG. 2 shows a formation example of the unit light-transmitting pattern 10A. FIGS. 2(a), (c), (e), (g), (i), (k), (m), (o), (q), (s) show examples in which the unit light-transmitting pattern 10A is composed of one light-transmitting portion 4. FIGS. 2(b), (d), (f), (h), (j), (l), (n), (p), (r), (t) show examples in which the unit light-transmitting pattern 10A is composed of a plurality of light-transmitting portions 4 arranged in a row in the Y-axis direction.

[0038] FIG. 3 shows a formation example of the unit light-shielding pattern 10B. FIGS. 3(a), (c), (e), (g), (i), (k), (m), (o), (q), (s) show examples in which the unit light-shielding pattern 10B is composed of one light-shielding portion 3. FIGS. 3(b), (d), (f), (h), (j), (l), (n), (p), (r), (t) show examples in which the unit light-shielding pattern 10B is composed of a plurality of light-shielding portions 3 arranged in a row in the Y-axis direction.

[0039] Here, arranging in a column in the Y-axis direction means that the light-transmitting portions 4 or the light-blocking portions 3 are arranged, so to speak, upward, and it is not necessarily along an axis parallel to the Y-axis. The center line may be inclined or curved with respect to the Y-axis. Also, when the unit light-transmitting portion pattern 10A is composed of a plurality of light-transmitting portions 4 arranged in a column in the Y-axis direction, or when the unit light-blocking portion pattern 10B is composed of a plurality of light-blocking portions 3 arranged in a column in the Y-axis direction, in the Y-axis direction, the number of light-transmitting portions 4, the number of light-blocking portions 3, the length of the light-transmitting portions 4, and the length of the light-blocking portions 3 may be determined as appropriate. Incidentally, as shown in FIG. 145, when a plurality of light-blocking portions 3 are arranged in a column in the Y-axis direction, in the unit light-blocking portion pattern 10B, it cannot be formed by cutting a thin sheet. Therefore, for example, it is formed by printing the light-blocking portion 3 on a transparent sheet 30 or the like.

[0040] And in the case of light-transmitting moiré and in the case of light-blocking moiré, the forming methods of these light-blocking portions 3 and light-transmitting portions 4 are different. <In the case of light-transmitting moiré> In the embodiment, it is composed of a unit light-transmitting portion pattern 10A having a predetermined shape with a center line Q, which is composed of one light-transmitting portion 4 or a plurality of light-transmitting portions 4 arranged in a column in the Y-axis direction. The unit light-transmitting portion patterns 10A are regularly arranged at a predetermined pitch along the X-axis direction, and the first pattern set portion PA1, the second pattern set portion PA2, and the common pattern set portion PA3, which are composed of light-transmitting portion pattern sets TPA having different shapes and pitches of the unit light-transmitting portion patterns 10A, are used.

[0041] Also, in the embodiment, the first pattern set portion PA1 is formed on the first pattern layer W1, the second pattern set portion PA2 is formed on the second pattern layer W2, and the shared pattern set portion PA3 is formed on either the first pattern layer W1 or the second pattern layer W2. FIGS. 4 to 8 and FIG. 9 show the case where the shared pattern set portion PA3 is formed on the first pattern layer W1 where the first pattern set portion PA1 is formed. FIG. 11 shows the case where the shared pattern set portion PA3 is formed on the second pattern layer W2 where the second pattern set portion PA2 is formed. That is, FIGS. 9 and 13(a) show the principle diagram of transmissive moiré when the shared pattern set portion PA3 is formed on the first pattern layer W1, and FIG. 11 shows the principle diagram of transmissive moiré when the shared pattern set portion PA3 is formed on the second pattern layer W2.

[0042] Then, when forming one-side moiré image MA with the first pattern set portion PA1 and the second pattern set portion PA2, and forming the other-side moiré image MB, when the shared pattern set portion PA3 is formed on the first pattern layer W1, it is formed with the shared pattern set portion PA3 and the second pattern set portion PA2, while when the shared pattern set portion PA3 is formed on the second pattern layer W2, it is formed with the first pattern set portion PA1 and the shared pattern set portion PA3.

[0043] <In the case of opaque moiré> The first pattern set portion PA1 and the shared pattern set portion PA3 each consist of an opaque portion pattern set portion SPA with different shapes and pitches of the unit opaque portion patterns 10B. The unit opaque portion patterns 10B of the first pattern set portion PA1 and the shared pattern set portion PA3 are different from the unit transmissive portion patterns 10A in terms of shape and pitch, and the second pattern set portion PA2 consisting of a transmissive portion pattern set portion TPA is used. The first pattern set portion PA1 and the shared pattern set portion PA3 are formed on the first pattern layer W1, and the second pattern set portion PA2 is formed on the second pattern layer W2.

[0044] Figures 10 and 13(b) show the principle diagrams of light-shielding moiré when the common pattern set portion PA3 is formed in the first pattern layer W1. Visually, this light-shielding moiré is shown in Example 2 (Figs. 59 to 64) and Example 12 (Figs. 119 to 123) described later.

[0045] Alternatively, a first pattern set portion PA1 composed of a light-transmitting portion pattern set portion TPA, and the unit light-transmitting portion pattern 10A of this first pattern set portion PA1 are respectively a second pattern set portion PA2 and a common pattern set portion PA3 composed of a light-shielding portion pattern set portion SPA in which the shape and pitch of the unit light-shielding portion pattern 10B are different. The first pattern set portion PA1 is formed in the first pattern layer W1, and the second pattern set portion PA2 and the common pattern set portion PA3 are formed in the second pattern layer W2.

[0046] Figure 12 shows the principle diagram of light-shielding moiré when the common pattern set portion PA3 is formed in the second pattern layer W2. Visually, this light-shielding moiré is shown in Example 3 (Figs. 65 to 70) and Example 10 (Figs. 109 to 113) described later.

[0047] Thus, in the case of light-transmitting moiré and in the case of light-shielding moiré, in either case, one-side moiré image MA is formed by the first pattern set portion PA1 and the second pattern set portion PA2, and the other-side moiré image MB is formed by the common pattern set portion PA3 and the second pattern set portion PA2 when the common pattern set portion PA3 is formed in the first pattern layer W1, and is formed by the first pattern set portion PA1 and the common pattern set portion PA3 when the common pattern set portion PA3 is formed in the second pattern layer W2.

[0048] Furthermore, in the embodiment, each unit light-transmitting part pattern 10A or each unit light-shielding part pattern 10B of the first pattern set part PA1 is formed into a shape having parallel axes and contour lines with each other, each unit light-transmitting part pattern 10A or each unit light-shielding part pattern 10B of the second pattern set part PA2 is formed into a shape having parallel axes and contour lines with each other, each unit light-transmitting part pattern 10A or each unit light-shielding part pattern 10B of the shared pattern set part PA3 is formed into a shape having parallel axes and contour lines with each other. When forming the shared pattern set part PA3 on the first pattern layer W1, each unit light-transmitting part pattern 10A or each unit light-shielding part pattern 10B formed thereon is formed into a shape having parallel axes and contour lines. When forming the shared pattern set part PA3 on the second pattern layer W2, each unit light-transmitting part pattern 10A or each unit light-shielding part pattern 10B formed thereon is formed into a shape having parallel axes and contour lines.

[0049] Furthermore, as shown in FIG. 14, in the embodiment, the unit light-transmitting part pattern 10A or the unit light-shielding part pattern 10B of the first pattern set part PA1, the unit light-transmitting part pattern 10A or the unit light-shielding part pattern 10B of the second pattern set part PA2, and the unit light-transmitting part pattern 10A or the unit light-shielding part pattern 10B of the shared pattern set part PA3 are formed such that one-side moire image MA is visible behind the second pattern layer W2, the other-side moire image MB is visible in front of the first pattern layer W1, or one-side moire image MA is visible behind the second pattern layer W2, the other-side moire image MB is visible behind the second pattern layer W2, or one-side moire image MA is visible in front of the first pattern layer W1, the other-side moire image MB is visible in front of the first pattern layer W1.

[0050] As shown in Fig. 14, Figs. 14(a)(c) show the case where one-sided moiré image MA is seen behind the second pattern layer W2 and the other-sided moiré image MB is seen in front of the first pattern layer W1, Figs. 14(b)(d) show the case where one-sided moiré image MA is seen behind the second pattern layer W2 and the other-sided moiré image MB is seen behind the second pattern layer W2, and Figs. 14(e)(f) show the case where one-sided moiré image MA is seen in front of the first pattern layer W1 and the other-sided moiré image MB is seen in front of the first pattern layer W1.

[0051] Specifically, as shown in the table of Fig. 15, in the decoration device T according to the embodiment of the present invention, the first pattern layer W1 and the second pattern layer W2 have the first to sixth configuration forms ((a) to (f)). That is, regarding the first pattern layer W1 and the second pattern layer W2, the pitch of the unit light-transmitting part pattern 10A or the unit light-blocking part pattern 10B of the first pattern set part PA1 is P1, the pitch of the unit light-transmitting part pattern 10A or the unit light-blocking part pattern 10B of the second pattern set part PA2 is P2, and the pitch of the unit light-transmitting part pattern 10A or the unit light-blocking part pattern 10B of the common pattern set part PA3 is P3. When the common pattern set part PA3 is formed on the first pattern layer W1, each unit light-transmitting part pattern 10A or each unit light-blocking part pattern 10B of the first pattern set part PA1, the second pattern set part PA2, and the common pattern set part PA3 (a) is set such that P1 > P2 > P3, where the one-sided moiré image MA is seen in the back and the other-sided moiré image MB is seen in the front. (b) is set such that P3 > P1 > P2, where the one-sided moiré image MA is seen in the back and the other-sided moiré image MB is also seen in the back. (e) is set such that P3 < P1 < P2, where the one-sided moiré image MA is seen in the front and the other-sided moiré image MB is also seen in the front. is created with any of these settings.

[0052] On the other hand, when the common pattern set part PA3 is formed on the second pattern layer W2, each unit light-transmitting part pattern 10A or each unit light-blocking part pattern 10B of the first pattern set part PA1, the second pattern set part PA2, and the common pattern set part PA3 (c) Set P3 > P1 > P2, such that the one - side moiré image MA appears to be in the back and the other - side moiré image MB appears to be in the front. (d) Set P1 > P2 > P3, such that the one - side moiré image MA appears to be in the back and the other - side moiré image MB also appears to be in the back. (f) Set P1 < P2 < P3, such that the one - side moiré image MA appears to be in the front and the other - side moiré image MB also appears to be in the front. It is configured to be created in any of the following settings.

[0053] That is, the setting in (a) is the first configuration form, the setting in (b) is the second configuration form, the setting in (c) is the third configuration form, the setting in (d) is the fourth configuration form, the setting in (e) is the fifth configuration form, and the setting in (f) is the sixth configuration form. Hereinafter, each configuration form will be described in detail. Figures 16 and 17 show the definitions of symbols used in the formation conditions of the first to sixth configuration forms ((a) - (f)).

[0054] <The first configuration form... the setting in (a)> As shown in Figure 18, this is formed by creating the common pattern set portion PA3 in the first pattern layer W1, and is formed to satisfy the general formulas (1a) - (6a) shown in Figure 19 so that the one - side moiré image MA appears to be in the back and the other - side moiré image MB appears to be in the front.

[0055] n, m, K, and R are integers greater than or equal to 1, m > Kn, P1 > P2 > P3, and Pmin is the minimum lattice interval (in the case of transmissive moiré, it is the minimum dimension between adjacent unit transmissive pattern parts; in the case of light-blocking moiré, it is the minimum dimension between adjacent unit light-blocking pattern parts, see FIGS. 9 and 10). For the definitions of other symbols, refer to FIGS. 16 and 17. In the first pattern layer W1, for the minimum lattice interval Pmin, the width S1 of the transmissive part of the first pattern set part of transmissive moiré, the width S1 of the transmissive part of the shared pattern set part PA3, the width B1 of the light-blocking part of the first pattern set part of light-blocking moiré, and the width B1 of the light-blocking part of the shared pattern set part, in the case of transmissive moiré, select numerical values such that a light-blocking part can exist between the widths S1 of adjacent transmissive parts; in the case of light-blocking moiré, select numerical values such that a transmissive part can exist between the widths B1 of adjacent light-blocking parts. First, set the lower limit value of the X-axis width processing (the limit value due to the performance of the processing equipment, the material of the processed material, etc.). Let the numerical value that cannot be processed narrower than this for the transmissive part be SLL, and the numerical value that cannot be processed thinner than this for the light-blocking part be BLL. In the case of transmissive moiré, the numerical values of S1, S2, Pmin - S1 (see FIG. 9(a)) are calculated by formulas (1a) to (5a), (7a) to (10a), and are numerical values proportional to ω1 and inversely proportional to n. Select numerical values of ω1, n, and S1 that satisfy the conditions S1 ≥ SLL, S2 ≥ SLL, and Pmin - S1 ≥ BLL. In the case of light-blocking moiré, the numerical values of B1, S2, Pmin - B1 (see FIG. 10(a)) are calculated by formulas (1a) to (5a), (11a) to (14a), and are numerical values proportional to ω1 and inversely proportional to n. Select numerical values of ω1, n, and B1 that satisfy the conditions B1 ≥ BLL, S2 ≥ SLL, and Pmin - B1 ≥ SLL.

[0056] In this case, when the one-sided moiré image MA and the other-sided moiré image MB are composed of transmissive moiré that transmits light, the widths Mw1’ and Mw2’ of the moiré images on the first pattern layer W1 formed by the width S1 of the transmissive part of the first pattern set part PA1 and the shared pattern set part PA3 and the width S2 of the transmissive part of the second pattern set part PA2 are calculated by the formulas (7a) to (10a) shown in FIG. 19. The general formula is the formula when two pattern set parts are combined in one pattern layer (the same applies hereinafter).

[0057] Also, in this case, when the one-side moiré image MA and the other-side moiré image MB are composed of a light-shielding moiré that blocks light, the widths Mv1' and Mv2' of the moiré images on the first pattern layer W1 that can be obtained are calculated by the expressions (11a) to (14a) shown in FIG. 19, based on the width B1 of the light-shielding portion of the first pattern set portion PA1 and the shared pattern set portion PA3, and the width S2 of the light-transmitting portion of the second pattern set portion PA2.

[0058] Furthermore, the period λ1' of the one-side moiré image MA' on the surface of the first pattern layer W1 and the period λ2' of the other-side moiré image MB' on the surface of the first pattern layer W1 are calculated by the expressions (15a) and (16a) shown in FIG. 20. The displacement coordinates M1' of the X-axis coordinate of the one-side moiré image MA' on the surface of the first pattern layer W1 and the displacement coordinates M2' of the X-axis coordinate of the other-side moiré image MB' on the surface of the first pattern layer W1 are calculated by the expressions (17a) and (18a) shown in FIG. 20.

[0059] In this calculation, as shown in FIG. 23, by setting n, m, K, and R, the periods of the one-side moiré image MA and the other-side moiré image MB can be made different, and when viewed from one viewpoint A, the visible numbers of the one-side moiré image MA and the other-side moiré image MB can be made the same or different.

[0060] As a result, when the viewpoint is moved parallel at a certain distance from the first pattern layer W1, it appears that MA' and MB' are moving in opposite directions to each other. In particular, when the viewpoint is moved parallel to W while maintaining the distance F, the relationship shown in FIG. 21 holds. The moving directions of the one-side moiré image MA and the other-side moiré image MB on the first pattern layer W1 are represented by positive and negative, with the left being negative. Also, when the distance from the first pattern layer W1 to the viewpoint is f, the relationship shown in FIG. 22 is obtained.

[0061] <Second configuration mode... setting of (b)> This is formed by forming the shared pattern set portion PA3 on the first pattern layer W1 as shown in FIG. 24, and satisfying the general expressions (2b) to (6b) shown in FIG. 25 so that the one-side moiré image MA appears to be in the back and the other-side moiré image MB also appears to be in the back.

[0062] n, m, and K are integers greater than or equal to 1, R is an integer greater than or equal to 2, m < Kn, P3 > P1 > P2, and Pmin is the minimum lattice interval (in the case of transmissive moiré, it is the minimum dimension between adjacent unit transmissive part patterns; in the case of light-blocking moiré, it is the minimum dimension between adjacent unit light-blocking part patterns; see FIGS. 9 and 10). For the definitions of other symbols, refer to FIGS. 16 and 17. In the first pattern layer W1, for the minimum lattice interval Pmin, the width S1 of the transmissive part of the first pattern set part of transmissive moiré, the width S1 of the transmissive part of the shared turn set part, the width B1 of the light-blocking part of the first pattern set part of light-blocking moiré, and the width B1 of the light-blocking part of the shared pattern set part, in the case of transmissive moiré, select numerical values such that a light-blocking part can exist between the widths S1 of adjacent transmissive parts, and in the case of light-blocking moiré, select numerical values such that a transmissive part can exist between the widths B1 of adjacent light-blocking parts. First, set the lower limit value of the X-axis width processing (the limit value due to the performance of the processing equipment, the material of the processed material, etc.). In the case of the transmissive part, let the numerical value that cannot be processed narrower than this be SLL, and in the case of the light-blocking part, let the numerical value that cannot be processed thinner than this be BLL. In the case of transmissive moiré, the numerical values of S1, S2, and Pmin - S1 (see FIG. 9(b)) are calculated by formulas (1b) to (5b), (7b) to (10b), and are numerical values proportional to ω1 and inversely proportional to n. Select numerical values of ω1, n, and S1 that satisfy the conditions S1 ≥ SLL, S2 ≥ SLL, and Pmin - S1 ≥ BLL. In the case of light-blocking moiré, the numerical values of B1, S2, and Pmin - B1 (see FIG. 10(b)) are calculated by formulas (1b) to (5b), (11b) to (14b), and are numerical values proportional to ω1 and inversely proportional to n. Select numerical values of ω1, n, and B1 that satisfy the conditions B1 ≥ BLL, S2 ≥ SLL, and Pmin - B1 ≥ SLL.

[0063] In this case, when one-sided moiré image MA and the other-sided moiré image MB are composed of transmissive moiré that transmits light, the widths Mw1' and Mw2' of the moiré images on the first pattern layer W1 that can be formed are calculated by the formulas (7b) to (10b) shown in FIG. 25 based on the width S1 of the transmissive part of the first pattern set part PA1 and the shared pattern set part PA3 and the width S2 of the transmissive part of the second pattern set part PA2.

[0064] Also, in this case, when the one-sided moiré image MA and the other-sided moiré image MB are composed of a light-shielding moiré that shields light, the widths Mv1' and Mv2' of the moiré images on the first pattern layer W1 that can be formed are calculated by the expressions (11b) to (14b) shown in FIG. 25 based on the width B1 of the light-shielding part of the first pattern set part PA1 and the shared pattern set part PA3, and the width S2 of the light-transmitting part of the second pattern set part PA2.

[0065] Furthermore, the period λ1' of the one-sided moiré image MA' on the surface of the first pattern layer W1 and the period λ2' of the other-sided moiré image MB' on the surface of the first pattern layer W1 are calculated by the expressions (15b) and (16b) shown in FIG. 26. The displacement coordinates M1' of the X-axis coordinate of the one-sided moiré image MA' on the surface of the first pattern layer W1 and the displacement coordinates M2' of the X-axis coordinate of the other-sided moiré image MB' on the surface of the first pattern layer W1 are calculated by the expressions (17b) and (18b) shown in FIG. 26.

[0066] In this calculation, as shown in FIG. 29, by setting n, m, K, and R, the periods of the one-sided moiré image MA and the other-sided moiré image MB are made different, and when viewed from one viewpoint A, the visible numbers of the one-sided moiré image MA and the other-sided moiré image MB can be made the same or different.

[0067] As a result, when the viewpoint is moved parallel at a certain distance from the first pattern layer W1, the one-sided moiré image MA and the other-sided moiré image MB appear to move in the same direction, but at different speeds. In particular, when the viewpoint is moved parallel by only W while maintaining the distance F, the relationship shown in FIG. 27 holds. The moving directions of the one-sided moiré image MA and the other-sided moiré image MB on the first pattern set part PA1 are represented by positive and negative, with the left being negative. Also, when the distance from the first pattern layer W1 to the viewpoint is f, the relationship shown in FIG. 28 is obtained.

[0068] <The third configuration mode... setting of (c)> This is formed by forming the shared pattern set part PA3 on the second pattern layer W2 as shown in FIG. 30, and satisfies the general expressions (1c) to (7c) shown in FIG. 31 so that the one-sided moiré image MA appears to be in the back and the other-sided moiré image MB appears to be in the front.

[0069] u, q, K, and R are integers greater than or equal to 1, q < Ku, P3 > P1 > P2, and Pmin is the minimum lattice interval (in the case of transmissive moiré, it is the minimum dimension between adjacent unit transmissive part patterns; in the case of opaque moiré, it is the minimum dimension between adjacent unit opaque part patterns, see FIGS. 11 and 12). For the definitions of other symbols, refer to FIGS. 16 and 17. In the second pattern layer W2, for the minimum lattice interval Pmin, the width S2 of the transmissive part of the second pattern set part of transmissive moiré, the width S2 of the transmissive part of the shared pattern set part PA3, the width B2 of the opaque part of the second pattern set part of opaque moiré, and the width B2 of the opaque part of the shared pattern set part, in the case of transmissive moiré, select numerical values that allow an opaque part to exist between the widths S2 of adjacent transmissive parts; in the case of opaque moiré, select numerical values that allow a transmissive part to exist between the widths B2 of adjacent opaque parts. First, set the lower limit value of the X-axis width processing (the limit value due to the performance of the processing equipment, the material of the processed material, etc.). Let it be the numerical value SLL that cannot be processed narrower than this for the transmissive part, and let it be the numerical value BLL that cannot be processed thinner than this for the opaque part. In the case of transmissive moiré, the numerical values of S1, S2, Pmin - S2 (see FIG. 11(a)) are calculated by formulas (1c) to (6c), (8c) to (11c), and are numerical values proportional to ω2 and inversely proportional to u. Select the numerical values of ω2, u, and S2 that satisfy the conditions S1 ≥ SLL, S2 ≥ SLL, Pmin - S2 ≥ BLL. In the case of opaque moiré, the numerical values of S1, B2, Pmin - B2 (see FIG. 12(a)) are calculated by formulas (1c) to (6c), (12c) to (15c), and are numerical values proportional to ω2 and inversely proportional to u. Select the numerical values of ω2, u, and B2 that satisfy the conditions S1 ≥ SLL, B2 ≥ BLL, Pmin - B2 ≥ SLL.

[0070] In this case, when the one-side moiré image MA and the other-side moiré image MB are composed of transmissive moiré that transmits light, the widths Mw1' and Mw2' of the moiré images on the first pattern layer W1 that can be formed are calculated by the formulas (8c) to (11c) shown in FIG. 31 based on the width S1 of the transmissive part of the first pattern set part PA1 and the widths S2 of the transmissive parts of the second pattern set part PA2 and the shared pattern set part PA3.

[0071] Also, in this case, when the one-sided moiré image MA and the other-sided moiré image MB are constituted by a light-shielding moiré, the widths Mv1’ and Mv2’ of the moiré images on the first pattern layer W1 formed are calculated by the expressions (12c) to (15c) shown in FIG. 31, based on the width S1 of the light-transmitting portion of the first pattern set portion PA1 and the width B2 of the light-shielding portion of the second pattern set portion PA2 and the shared pattern set portion PA3.

[0072] Furthermore, the period λ1´ of the one-sided moiré image MA´ on the surface of the first pattern layer W1 and the period λ2´ of the other-sided moiré image MB´ on the surface of the first pattern layer W1 are calculated by the expressions (16c) and (17c) shown in FIG. 32. The displacement coordinates M1´ of the X-axis coordinate of the one-sided moiré image MA´ on the surface of the first pattern layer W1 and the displacement coordinates M2´ of the X-axis coordinate of the other-sided moiré image MB´ on the surface of the first pattern layer W1 are calculated by the expressions (18c) and (19c) shown in FIG. 32.

[0073] In this calculation, as shown in FIG. 34, by setting u, q, K, and R, the periods of the one-sided moiré image MA and the other-sided moiré image MB can be made different, and when viewed from one viewpoint A, the visible numbers of the one-sided moiré image MA and the other-sided moiré image MB can be made the same or different.

[0074] As a result, when the viewpoint is moved parallel at a certain distance from the first pattern layer W1, MA’ and MB’ appear to move in opposite directions to each other. In particular, when the viewpoint is moved parallel to W while maintaining the distance F, the relationship shown in FIG. 33 holds. The moving directions of MA’ and MB’ on the first pattern layer W1 are represented by positive and negative, with the left being negative.

[0075] <Fourth Configuration Mode... Settings of (d)> This is formed by forming the shared pattern set portion PA3 on the second pattern layer W2 as shown in FIG. 35, and satisfies the general expressions (1d) to (7d) shown in FIG. 36 so that the one-sided moiré image MA appears to be in the back and the other-sided moiré image MB also appears to be in the back.

[0076] u, q, and K are integers greater than or equal to 1, R is an integer greater than or equal to 2, q > Ku, P1 > P2 > P3, and Pmin is the minimum lattice interval (in the case of transmissive moiré, it is the minimum dimension between adjacent unit transmissive pattern portions; in the case of light-blocking moiré, it is the minimum dimension between adjacent unit light-blocking pattern portions; see FIGS. 11 and 12). For the definitions of other symbols, refer to FIGS. 16 and 17. In the second pattern layer W2, for the minimum lattice interval Pmin, the width S2 of the transmissive portion of the second pattern set portion of transmissive moiré, the width S2 of the transmissive portion of the shared pattern set portion, the width B2 of the light-blocking portion of the second pattern set portion of light-blocking moiré, and the width B2 of the light-blocking portion of the shared pattern set portion, in the case of transmissive moiré, select numerical values such that a light-blocking portion can exist between the widths S2 of adjacent transmissive portions, and in the case of light-blocking moiré, select numerical values such that a transmissive portion can exist between the widths B2 of adjacent light-blocking portions. First, set the lower limit value of the X-axis width processing (limit value due to the performance of the processing equipment, the material of the processed material, etc.). Let the numerical value that cannot be processed narrower than this for the transmissive portion be SLL, and the numerical value that cannot be processed thinner than this for the light-blocking portion be BLL. In the case of transmissive moiré, the numerical values of S1, S2, and Pmin - S2 (see FIG. 11(b)) are calculated by equations (1d) to (6d), (8d) to (11d), and are numerical values proportional to ω2 and inversely proportional to u. Select numerical values of ω2, u, and S2 that satisfy the conditions S1 ≥ SLL, S2 ≥ SLL, and Pmin - S2 ≥ BLL. In the case of light-blocking moiré, the numerical values of S1, B2, and Pmin - B2 (see FIG. 12(b)) are calculated by equations (1d) to (6d), (12d) to (15d), and are numerical values proportional to ω2 and inversely proportional to u. Select numerical values of ω2, u, and B2 that satisfy the conditions S1 ≥ SLL, B2 ≥ BLL, and Pmin - B2 ≥ SLL.

[0077] In this case, when the one-sided moiré image MA and the other-sided moiré image MB are composed of transmissive moiré that transmits light, the widths Mw1' and Mw2' of the moiré images on the first pattern layer W1 that can be formed are calculated by the equations (8d) to (11d) shown in FIG. 36 based on the width S1 of the transmissive portion of the first pattern set portion PA1 and the widths S2 of the transmissive portions of the second pattern set portion PA2 and the shared pattern set portion PA3.

[0078] Also, in this case, when the one-sided moiré image MA and the other-sided moiré image MB are composed of a light-shielding moiré that blocks light, the widths Mv1' and Mv2' of the moiré images on the first pattern layer W1 formed are calculated by the expressions (12d) to (15d) shown in FIG. 36, based on the width S1 of the light-transmitting portion of the first pattern set portion PA1 and the width B2 of the light-blocking portion of the second pattern set portion PA2 and the shared pattern set portion PA3.

[0079] Furthermore, the period λ1' of the one-sided moiré image MA' on the surface of the first pattern layer W1 and the period λ2' of the other-sided moiré image MB' on the surface of the first pattern layer W1 are calculated by the expressions (16d) and (17d) shown in FIG. 37. The displacement coordinates M1' of the X-axis coordinate of the one-sided moiré image MA' on the surface of the first pattern layer W1 and the displacement coordinates M2' of the X-axis coordinate of the other-sided moiré image MB' on the surface of the first pattern layer W1 are calculated by the expressions (18d) and (19d) shown in FIG. 37.

[0080] In this calculation, as shown in FIG. 39, by setting u, q, K, and R, the periods of the one-sided moiré image MA and the other-sided moiré image MB can be made different, and when viewed from one viewpoint A, the visible numbers of the one-sided moiré image MA and the other-sided moiré image MB can be made the same or different.

[0081] As a result, when the viewpoint is moved parallel at a certain interval from the first pattern layer W1, MA' and MB' appear to move in the same direction but at different speeds. In particular, when the viewpoint is moved parallel by W while maintaining the distance F, the relationship shown in FIG. 38 holds. The moving directions of MA' and MB' on the first pattern layer W1 are represented by positive and negative, with the left being negative.

[0082] <The Fifth Configuration Form... Setting of (e)> As shown in FIG. 40, this is formed by forming the shared pattern set portion PA3 on the first pattern layer W1 and satisfying the general expressions (1e) to (6e) shown in FIG. 41 so that the one-sided moiré image MA appears in the front and the other-sided moiré image MB also appears in the front.

[0083] n, m, and K are integers greater than or equal to 1, R is an integer greater than or equal to 2, m > Kn, P3 < P1 < P2, and Pmin is the minimum lattice interval (in the case of transmissive moiré, it is the minimum dimension between adjacent unit transmissive pattern parts; in the case of light-blocking moiré, it is the minimum dimension between adjacent unit light-blocking pattern parts, see FIGS. 9 and 10). For the definitions of other symbols, refer to FIGS. 16 and 17. In the first pattern layer W1, for the minimum lattice interval Pmin, the width S1 of the transmissive part of the first pattern set part of transmissive moiré, the width S1 of the transmissive part of the shared turn set part, the width B1 of the light-blocking part of the first pattern set part of light-blocking moiré, and the width B1 of the light-blocking part of the shared pattern set part, in the case of transmissive moiré, select numerical values such that a light-blocking part can exist between the widths S1 of adjacent transmissive parts; in the case of light-blocking moiré, select numerical values such that a transmissive part can exist between the widths B1 of adjacent light-blocking parts. First, set the lower limit value of the X-axis width processing (the limit value due to the performance of the processing equipment, the material of the processing material, etc.). Let the numerical value that cannot be processed narrower than this for the transmissive part be SLL, and the numerical value that cannot be processed thinner than this for the light-blocking part be BLL. In the case of transmissive moiré, the numerical values of S1, S2, and Pmin - S1 (see FIG. 9(a)) are calculated by equations (1e) to (5e), (7e) to (10e), and are numerical values proportional to ω1 and inversely proportional to n. Select numerical values of ω1, n, and S1 that satisfy the conditions S1 ≥ SLL, S2 ≥ SLL, and Pmin - S1 ≥ BLL. In the case of light-blocking moiré, the numerical values of B1, S2, and Pmin - B1 (see FIG. 10(a)) are calculated by equations (1e) to (5e), (11e) to (14e), and are numerical values proportional to ω1 and inversely proportional to n. Select numerical values of ω1, n, and B1 that satisfy the conditions B1 ≥ BLL, S2 ≥ SLL, and Pmin - B1 ≥ SLL.

[0084] In this case, when the one-sided moiré image MA and the other-sided moiré image MB are composed of transmissive moiré that transmits light, the widths Mw1' and Mw2' of the moiré images on the first pattern layer W1 that can be formed are calculated by the equations (7e) to (10e) shown in FIG. 41 based on the width S1 of the transmissive part of the first pattern set part PA1 and the shared pattern set part PA3 and the width S2 of the transmissive part of the second pattern set part PA2.

[0085] Also, in this case, when the one-side moiré image MA and the other-side moiré image MB are composed of a light-shielding moiré that blocks light, the widths Mv1’ and Mv2’ of the moiré images on the resulting first pattern layer W1 are calculated by the expressions (11e) to (14e) shown in FIG. 41 based on the width B1 of the light-shielding portion of the first pattern set portion PA1 and the shared pattern set portion PA3, and the width S2 of the light-transmitting portion of the second pattern set portion PA2.

[0086] Furthermore, the period λ1’ of the one-side moiré image MA´ on the surface of the first pattern layer W1 and the period λ2’ of the other-side moiré image MB´ on the surface of the first pattern layer W1 are calculated by the expressions (15e) and (16e) shown in FIG. 42. The displacement coordinates M1’ of the X-axis coordinate of the one-side moiré image MA´ on the surface of the first pattern layer W1 and the displacement coordinates M2’ of the X-axis coordinate of the other-side moiré image MB´ on the surface of the first pattern layer W1 are calculated by the expressions (17e) and (18e) shown in FIG. 42.

[0087] In this calculation, as shown in FIG. 45, by setting n, m, K, and R, the periods of the one-side moiré image MA and the other-side moiré image MB can be made different, and when viewed from one viewpoint A, the visible numbers of the one-side moiré image MA and the other-side moiré image MB can be made the same or different.

[0088] As a result, when the viewpoint is moved parallel at a certain interval from the first pattern layer W1, the one-side moiré image MA and the other-side moiré image MB appear to move in the same direction, but the other-side moiré image MB moves more slowly than the one-side moiré image MA. When the viewpoint is moved parallel by W while maintaining the interval F from the first pattern set portion PA1, the relationship shown in FIG. 43 is established. The moving directions of the one-side moiré image MA and the other-side moiré image MB on the first pattern layer W1 are represented by positive and negative, with the left being negative. Also, when the distance from the first pattern layer W1 to the viewpoint is f, the relationship shown in FIG. 44 is obtained.

[0089] <The Sixth Configuration Mode... Setting of (f)> As shown in FIG. 46, the common pattern set portion PA3 is formed in the second pattern layer W2 and is formed to satisfy the general formulas (1f) to (7f) shown in FIG. 47 so that the one-side moire image MA can be seen in the front and the other-side moire image MB can also be seen in the front.

[0090] u, q, and K are integers of 1 or more, R is an integer of 2 or more, q < Ku, P1 < P2 < P3, and Pmin is the minimum lattice interval (in the case of a transmissive moire, it is the minimum dimension between adjacent unit transmissive portion patterns; in the case of a light-blocking moire, it is the minimum dimension between adjacent unit light-blocking portion patterns; see FIGS. 11 and 12). For the definitions of other reference numerals, refer to FIGS. 16 and 17. In the second pattern layer W2, for the minimum lattice interval Pmin, the width S2 of the transmissive portion of the second pattern set portion of the transmissive moire, the width S2 of the transmissive portion of the common pattern set portion, the width B2 of the light-blocking portion of the second pattern set portion of the light-blocking moire, and the width B2 of the light-blocking portion of the common pattern set portion, in the case of a transmissive moire, numerical values are selected such that a light-blocking portion can exist between the widths S2 of adjacent transmissive portions, and in the case of a light-blocking moire, numerical values are selected such that a transmissive portion can exist between the widths B2 of adjacent light-blocking portions. First, the lower limit value of the X-axis width processing (the limit value due to the performance of the processing equipment, the material of the processing material, etc.) is set. Let the numerical value that cannot be processed narrower than this be SLL in the case of a transmissive portion, and let the numerical value that cannot be processed thinner than this be BLL in the case of a light-blocking portion. In the case of a transmissive moire, the numerical values of S1, S2, and Pmin - S2 (see FIG. 11(a)) are calculated by the formulas (1f) to (6f), (8f) to (11f) and are numerical values proportional to ω2 and inversely proportional to u. Numerical values of ω2, u, and S2 that satisfy the conditions of S1 ≧ SLL, S2 ≧ SLL, and Pmin - S2 ≧ BLL are selected. In the case of a light-blocking moire, the numerical values of S1, B2, and Pmin - B2 (see FIG. 12(a)) are calculated by the formulas (1f) to (6f), (12f) to (15f) and are numerical values proportional to ω2 and inversely proportional to u. Numerical values of ω2, u, and B2 that satisfy the conditions of S1 ≧ SLL, B2 ≧ BLL, and Pmin - B2 ≧ SLL are selected.

[0091] In this case, when the one-sided moiré image MA and the other-sided moiré image MB are composed of a transmissive moiré that transmits light, the widths Mw1’ and Mw2’ of the moiré images on the first pattern layer W1 formed are calculated by the expressions (8f) to (11f) shown in Fig. 47 based on the width S1 of the light-transmissive portion of the first pattern set portion PA1 and the width S2 of the light-transmissive portions of the second pattern set portion PA2 and the common pattern set portion PA3.

[0092] Also, in this case, when the one-sided moiré image MA and the other-sided moiré image MB are composed of an opaque moiré that blocks light, the widths Mv1’ and Mv2’ of the moiré images on the first pattern layer W1 formed are calculated by the expressions (12f) to (15f) shown in Fig. 47 based on the width S1 of the light-transmissive portion of the first pattern set portion PA1 and the width B2 of the light-blocking portions of the second pattern set portion PA2 and the common pattern set portion PA3.

[0093] Furthermore, the period λ1’ of the one-sided moiré image MA’ on the surface of the first pattern layer W1 and the period λ2’ of the other-sided moiré image MB’ on the surface of the first pattern layer W1 are calculated by the expressions (16f) and (17f) shown in Fig. 48. The displacement coordinates M1’ of the X-axis coordinate of the one-sided moiré image MA’ on the surface of the first pattern layer W1 and the displacement coordinates M2’ of the X-axis coordinate of the other-sided moiré image MB’ on the surface of the first pattern layer W1 are calculated by the expressions (18f) and (19f) shown in Fig. 48.

[0094] In this calculation, as shown in Fig. 50, by setting u, q, K, and R, the periods of the one-sided moiré image MA and the other-sided moiré image MB can be made different, and when viewed from one viewpoint A, the visible numbers of the one-sided moiré image MA and the other-sided moiré image MB can be made the same or different.

[0095] As a result, when the viewpoint is moved parallel at a certain interval from the first pattern layer W1, the one-sided moiré image MA and the other-sided moiré image MB appear to move in the same direction, but the other-sided moiré image MB appears to move more slowly than the one-sided moiré image MA. When the viewpoint is moved parallel by W while maintaining the interval F from the first pattern set portion PA1, the relationship shown in Fig. 49 holds. The moving directions of the one-sided moiré image MA and the other-sided moiré image MB on the first pattern set portion PA1 are represented by positive and negative, with the left being negative.

[0096] In each embodiment, when creating the first pattern layer W1 and the second pattern layer W2, first, the shapes of the one-side moiré image MA and the other-side moiré image MB are selected, and the shapes of the unit light-transmitting part patterns 10A or the unit light-blocking part patterns 10B of the first pattern set part PA1, the second pattern set part PA2, and the shared pattern set part PA3 corresponding thereto are determined, and either a light-transmitting moiré or a light-blocking moiré is selected. Then, for example, a distance W, a period ω1, an integer value K, an integer value R, a distance F, a width S1 of the light-transmitting part of the first pattern set part, a minimum dimension between adjacent unit light-transmitting part patterns or a minimum dimension Pmin between adjacent unit light-blocking part patterns, and a width S2 of the light-transmitting part of the second pattern set part are given, and necessary values are calculated so as to satisfy the above general formula. In this case, by setting the integer value n and the integer value m, or by setting the integer value u and the integer value q, the number of visible one-side moiré images MA and the other-side moiré images MB can be made the same or different when viewed from one viewpoint A.

[0097] Therefore, according to the decoration device according to the embodiment of the present invention, when moving one viewpoint A along the X-axis direction, or fixing one viewpoint A and moving either the first pattern layer W1 or the second pattern layer W2 along the X-axis, the one-side moiré image MA and the other-side moiré image MB move relative to each other regularly at a predetermined period. For this reason, since the moiré image changes, the interestingness can be increased. In addition, since the pattern layers forming the mutually changing moiré images are two, namely the first pattern layer W1 and the second pattern layer W2, the number of parts can be reduced as compared with the prior art, the structure can be simplified, and the manufacturing efficiency can also be improved.

[0098] Also, when viewed from one perspective A, a plurality of one-sided moiré images MA and the other-sided moiré images MB are formed at a predetermined period along the X-axis direction respectively. Therefore, compared with the case of forming one one-sided moiré image MA and one other-sided moiré image MB, the interestingness can be further increased. Furthermore, when the period of the one-sided moiré image MA is made different from the period of the other-sided moiré image MB, and when the number of visible one-sided moiré images MA and the other-sided moiré images MB is made different when viewed from one perspective A, the moiré image with the shorter period can be made to appear more numerous than the moiré image with the longer period. Therefore, the interestingness can be further increased.

[0099] FIG. 51 shows a decoration device T according to another embodiment of the present invention. This is a structure in which a pair of sliding doors 20 and 21 that move relative to each other in the X-axis direction are supported by a main body (not shown). And, the wall surface of one sliding door 20 is constituted by a first pattern layer W1, and the wall surface of the other sliding door 21 is constituted by a second pattern layer W2. In FIG. 51, the light-transmitting portions 4 of the first pattern layer W1 and the second pattern layer W2 are represented by solid lines. The light-shielding portion 3 is a blank portion. According to this, if one perspective A is moved along the X-axis direction, or if one perspective A is fixed and the first pattern layer W1 and the second pattern layer W2 are relatively moved along the X-axis, the one-sided moiré image MA and the other-sided moiré image MB move regularly relative to each other at a predetermined period, and the same operations and effects as described above are achieved.

[0100] FIG. 52 shows a decoration device T according to another embodiment of the present invention. In the above-described sliding door type decoration device T, a plurality of types (three types: W1a, W1b, and W1c in the embodiment) of the first pattern layer W1 are formed on one sliding door 20, and one type of the second pattern layer W2 is formed on the other sliding door 21. In FIG. 52, the light-transmitting portions and the light-shielding portions of the first pattern layer W1 are omitted, and the light-transmitting portion 4 of the second pattern layer W2 is represented by a solid line. The light-shielding portion 3 is a blank portion. According to this, since there are a plurality of types of the first pattern layer W1, a variety of moiré images can be visually recognized, further increasing the diversity and the interestingness.

Example

[0101] Next, FIGS. 53 to 138 show Examples 1 to 15 of the pattern layer that forms the one-sided moiré image MA and the other-sided moiré image MB. Further, FIGS. 139 to 142 show the calculation results from the corresponding general formulas for various elements in each example. The numerical values of each element can be easily calculated, for example, by using spreadsheet software "Excel (registered trademark)". Here, the drawings of the examples were created and printed under the conditions of d = 0 and ω? = ω?. Also, the numerical values of each element regarding MA' and MB', which are the coordinates on the W1 plane of MA and MB corresponding to the Y-axis and are visually recognized from point A, are shown. And also, the examples assume using a laser processing machine for paper with a thickness of 0.15 mm (hereinafter the unit is mm), set the lower limit value SLL of the X-axis width processing of the light-transmitting part to 0.8, and set the lower limit value BLL of the X-axis width processing of the light-blocking part to 1.0. Examples 1, 2, 5, 6, 7, 8, 9, 11, 12, 13 in which the common pattern set part PA3 is formed in the first pattern layer W1 select each element that satisfies the conditions of S1 ≧ 0.8, S2 ≧ 0.8, B1 ≧ 1.0, Pmin - S1 ≧ 1.0, Pmin - B1 ≧ 0.8, and Examples 3, 4, 10, 14 in which the common pattern set part PA3 is formed in the second pattern layer W2 select the numerical values of each element that satisfies the conditions of S1 ≧ 0.8, S2 ≧ 0.8, B2 ≧ 1.0, Pmin - S2 ≧ 1.0, Pmin - B2 ≧ 0.8.

[0102] <Example 1> Shown in FIGS. 53 to 58. This is an example of the first configuration form. Here, the one-sided moiré image MA has an oblique bar shape, and the other-sided moiré image MB has an oblique bar shape that is mirror-symmetrical to the one-sided moiré image MA, and it is a light-transmitting moiré.

[0103] <Example 2> Shown in FIGS. 59 to 64. This is an example of the first configuration form and shows a light-blocking moiré.

[0104] <Example 3> Shown in FIGS. 65 to 70. This is an example of the third configuration form and shows a light-blocking moiré.

[0105] <Example 4> Shown in FIGS. 71 to 76. This is an example of the fourth configuration form and exhibits a transmissive moire pattern.

[0106] <Example 5> Shown in FIGS. 77 to 81. This is an example of the first configuration form and exhibits a transmissive moire pattern. In the first pattern layer (W1), a first pattern set portion (PA1a) and a first pattern set portion (PA1b) are formed with a predetermined interval therebetween, and a shared pattern set portion (PA3a) and a shared pattern set portion (PA3b) are formed with a predetermined interval therebetween for these. In the second pattern layer (W2), only the second pattern set portion (PA2) is formed.

[0107] FIGS. 82 to 84 show a modified example of Example 5. This is formed by making the pattern set portion appearing in the first pattern layer (W1) appear in a cross shape. The second pattern layer (W2) is left as it is. The appearance of the moire image to be appeared changes.

[0108] <Example 6> Shown in FIGS. 85 to 89. This is formed by forming a transmissive portion of Example 5, and is similarly an example of the first configuration form and exhibits a transmissive moire pattern. In the first pattern layer (W1), a first pattern set portion (PA1a) and a first pattern set portion (PA1b) are formed with a predetermined interval therebetween, and a shared pattern set portion (PA3a) and a shared pattern set portion (PA3b) are formed with a predetermined interval therebetween for these. In the second pattern layer (W2), only the second pattern set portion (PA2) is formed.

[0109] FIGS. 90 to 92 show a modified example of Example 6. This is formed by making the pattern set portion appearing in the first pattern layer (W1) appear in a cross shape. The second pattern layer (W2) is left as it is. The appearance of the moire image to be appeared changes.

[0110] <Example 7> It is shown in FIGS. 93 to 97. This is an example of the first configuration form, and it exhibits a transmissive moiré. Here, the pattern set portion of the first pattern layer (W1) is formed in the shape of a horse and is exposed. In the portion corresponding to the legs of the horse, the first pattern set portions (PA1a), (PA1b) and the common pattern set portions (PA3a), (PA3b) are divided into four stages in order from the bottom, and the four-stage transmissive portions are synchronized to repeat reciprocation left and right.

[0111] <Example 8> It is shown in FIGS. 98 to 103. This is an example of the first configuration form, and it exhibits a transmissive moiré. In the first pattern layer (W1), the first pattern set portion (PA1a) and the first pattern set portion (PA1b) are formed with a predetermined interval therebetween, and the common pattern set portion (PA3a) and the common pattern set portion (PA3b) are formed with a predetermined interval therebetween. In the second pattern layer (W2), only the second pattern set portion (PA2) is formed.

[0112] <Example 9> It is shown in FIGS. 104 to 108. This is the same as Example 8, but in the first pattern layer (W1), the predetermined interval between the first pattern set portion (PA1a) and the first pattern set portion (PA1b), and the predetermined interval between the common pattern set portion (PA3a) and the common pattern set portion (PA3b) are different from those in Example 8.

[0113] <Example 10> It is shown in FIGS. 109 to 113. This is an example of the third configuration form, and it exhibits an opaque moiré. In the first pattern layer (W1), only the first pattern set portion (PA1) is formed. In the second pattern layer (W2), the second pattern set portion (PA2a) and the second pattern set portion (PA2b) are formed with a predetermined interval therebetween, and the common pattern set portion (PA3a) and the common pattern set portion (PA3b) are formed with a predetermined interval therebetween.

[0114] <Example 11> It is shown in FIGS. 114 to 118. This is an example of the first configuration form, showing a transmissive moiré.

[0115] <Example 12> It is shown in FIGS. 119 to 123. This is an example of the second configuration form, showing a light-shielding moiré.

[0116] <Example 13> It is shown in FIGS. 124 to 128. This is an example of the fifth configuration form, showing a transmissive moiré.

[0117] <Example 14> It is shown in FIGS. 129 to 133. This is an example of the sixth configuration form, showing a transmissive moiré.

[0118] <Example 15> It is shown in FIGS. 134 to 138. This is an example of the first configuration form, showing a transmissive moiré.

[0119] Furthermore, in the above-described embodiments, as shown in FIG. 143 (the light-transmitting portions of the first pattern layer W1 and the second pattern layer W2 are represented by solid lines, and the light-shielding portions are represented by white areas), as also shown in Examples 5, 8, 9, and 10, the method of forming the pattern set portion may be appropriately changed, such as forming it symmetrically about the center line J on the pattern layer, or providing a plurality of types a1, a2, a3 in multiple stages as also shown in Example 7 in FIG. 144. Also, in each of the above embodiments, each pattern layer W1, W2 is formed by making holes in a black sheet to form the light-shielding portion 3 and the light-transmitting portion 4, but it is not necessarily limited to this. For example, it may be formed of a plate material or a sheet material such as a resin plate, a metal plate, a wooden plate, or a glass plate, and may be appropriately changed. In particular, as shown in FIG. 145, when a plurality of light-shielding portions 3 are arranged in a row in the Y-axis direction, in the unit light-shielding portion pattern 10B, since it cannot be formed by making holes in a thin sheet, for example, it may be formed by printing the light-shielding portion 3 on a transparent sheet 30. Furthermore, it goes without saying that the shapes of the one-side moire image MA and the other-side moire image MB are not limited to those described above. In short, the present invention is not limited to the above-described embodiments of the present invention, and those skilled in the art can easily make many changes to these exemplary embodiments without substantially departing from the novel teachings and effects of the present invention, and many of these changes are included in the scope of the present invention.

Explanation of Reference Numerals

[0120] T Decorating device 1 Main body 2 Leg portion 3 Light-shielding portion 4 Light-transmitting portion W1 First pattern layer W2 Second pattern layer MA One-side moire image MB Other-side moire image 10A Unit light-transmitting portion pattern 10B Unit light-shielding portion pattern TPA Light-transmitting portion pattern set portion SPA Light-shielding portion pattern set portion PA1 First pattern set portion PA2 Second pattern set portion PA3 Common Pattern Set Section Widths of the light-transmitting portions 4 of S1, S2, S3 Widths of the light-shielding portions 3 of B1, B2, B3 Center Line Q Sliding Doors 20, 21 Central Axis J

Claims

1. A decorative device in which two pattern layers, each having a plurality of rows of light-shielding portions and light-transmitting portions arranged alternately along a predetermined direction, are stacked with a gap therebetween, and a moiré image is visible when the two pattern layers are viewed from the outside. The two pattern layers are, in order from the viewing side, a first pattern layer (W1) and a second pattern layer (W2). An X-axis passing through the origin O along the plane direction of the pattern layer and along the predetermined direction, a Y-axis passing through the origin O along the plane direction of the pattern layer and perpendicular to the X-axis, and a Z-axis perpendicular to the plane direction of the pattern layer and in the stacking direction of the pattern layer, defining the gap and passing through the origin O, are set. On an arbitrary cross-section cut by a plane perpendicular to the Y-axis, a moiré image identified when viewed from one viewing point A on the outer side in the Z-axis direction is composed of two moiré images, namely, one-side moiré image (MA) and the other-side moiré image (MB). When the one viewing point A is moved along the X-axis direction, or when the one viewing point A is fixed and either the first pattern layer (W1) or the second pattern layer (W2) is moved along the X-axis, the one-side moiré image (MA) and the other-side moiré image (MB) are caused to move relative to each other regularly. A decorative device characterized by this.

2. The decorative device according to claim 1, wherein when viewed from the one viewing point A, a plurality of the one-side moiré images (MA) and the other-side moiré images (MB) are formed at predetermined periods respectively along the X-axis direction.

3. The period of the one-side moiré image (MA) is made different from the period of the other-side moiré image (MB), and when viewed from the one viewing point A, the number of the one-side moiré images (MA) and the other-side moiré images (MB) that can be viewed is made different. The decorative device according to claim 2, characterized by this.

4. The one-side moiré image (MA) is composed of a light-transmitting moiré that transmits light or a light-shielding moiré that shields light. The other-side moiré image (MB) corresponds to the one-side moiré image (MA) and is composed of a light-transmitting moiré that transmits light or a light-shielding moiré that shields light. The decorative device according to any one of claims 1 to 3, characterized by this.

5. A light-transmitting portion pattern set portion (TPA) composed of a unit light-transmitting portion pattern of a predetermined shape having a center line, which is composed of one light-transmitting portion or a plurality of light-transmitting portions arranged in a row in the Y-axis direction, and the unit light-transmitting portion patterns are regularly arranged at a predetermined pitch along the X-axis direction. A light-shielding pattern set portion (SPA) composed of a single light-shielding portion or a plurality of light-shielding portions arranged in a line in the Y-axis direction, which is a set of unit light-shielding portion patterns of a predetermined shape having a center line, and the light-shielding portion patterns are regularly arranged at a predetermined pitch along the X-axis direction is used. In the case of the above-mentioned transmissive moiré, A first pattern set portion (PA1), a second pattern set portion (PA2), and a common pattern set portion (PA3) each composed of a transmissive pattern set portion (TPA) in which the shape and pitch of the above-mentioned unit transmissive portion patterns are different are used. The above-mentioned first pattern set portion (PA1) is formed on the first pattern layer (W1), the above-mentioned second pattern set portion (PA2) is formed on the second pattern layer (W2), and the above-mentioned common pattern set portion (PA3) is formed on either the above-mentioned first pattern layer (W1) or the second pattern layer (W2). In the case of the above-mentioned light-shielding moiré, A first pattern set portion (PA1) and a common pattern set portion (PA3) each composed of a light-shielding pattern set portion (SPA) in which the shape and pitch of the above-mentioned unit light-shielding portion patterns are different, and a second pattern set portion (PA2) composed of a transmissive pattern set portion (TPA) in which the shape and pitch of the unit light-shielding portion patterns of the above-mentioned first pattern set portion (PA1) and the common pattern set portion (PA3) are different are used. The above-mentioned first pattern set portion (PA1) and the common pattern set portion (PA3) are formed on the first pattern layer (W1), and the above-mentioned second pattern set portion (PA2) is formed on the second pattern layer (W2). Or A first pattern set portion (PA1) composed of a transmissive pattern set portion (TPA), and a second pattern set portion (PA2) and a common pattern set portion (PA3) each composed of a light-shielding pattern set portion (SPA) in which the shape and pitch of the unit transmissive portion patterns of the above-mentioned first pattern set portion (PA1) are different are used. The above-mentioned first pattern set portion (PA1) is formed on the first pattern layer (W1), and the above-mentioned second pattern set portion (PA2) and the above-mentioned common pattern set portion (PA3) are formed on the second pattern layer (W2). The above-mentioned one-side moiré image (MA) is formed by the above-mentioned first pattern set portion (PA1) and the above-mentioned second pattern set portion (PA2). The above-mentioned other-side moiré image (MB) When the shared pattern set portion (PA3) is formed in the first pattern layer (W1), it is formed by the shared pattern set portion (PA3) and the second pattern set portion (PA2), When the shared pattern set portion (PA3) is formed in the second pattern layer (W2), it is formed by the first pattern set portion (PA1) and the shared pattern set portion (PA3). The decoration device according to claim 4, characterized in that

6. Each unit light-transmitting portion pattern or each unit light-shielding portion pattern formed in the first pattern set portion (PA1) is formed in the same shape having parallel axes with each other, Each unit light-transmitting portion pattern or each unit light-shielding portion pattern formed in the second pattern set portion (PA2) is formed in the same shape having parallel axes with each other, Each unit light-transmitting portion pattern or each unit light-shielding portion pattern formed in the shared pattern set portion (PA3) is formed in the same shape having parallel axes with each other, When the shared pattern set portion (PA3) is formed in the first pattern layer (W1), each unit light-transmitting portion pattern or each unit light-shielding portion pattern formed therein is formed in the same shape having parallel axes with each other, When the shared pattern set portion (PA3) is formed in the second pattern layer (W2), each unit light-transmitting portion pattern or each unit light-shielding portion pattern formed therein is formed in the same shape having parallel axes with each other. The decoration device according to claim 5, characterized in that

7. A setting in which the one-sided moire image (MA) is visible behind the second pattern layer (W2) and the other-sided moire image (MB) is visible in front of the first pattern layer (W1), A setting in which the one-sided moire image (MA) is visible behind the second pattern layer (W2) and the other-sided moire image (MB) is visible behind the second pattern layer (W2), The first pattern set portion (PA1), the second pattern set portion (PA2), and the shared pattern set portion (PA3) are formed so as to be set to any one of the settings in which the one-sided moire image (MA) is visible in front of the first pattern layer (W1) and the other-sided moire image (MB) is visible in front of the first pattern layer (W1). The decoration device according to claim 6, characterized in that

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