KR101937230B1 - Cube-corner type retroreflective sheet - Google Patents

Abstract

A cube-corner retroreflective sheeting according to the present invention is disclosed.
A cube-corner retroreflective sheet according to the present invention includes: a main pattern array using a first cube corner member and regularly arranged with two first cube corner members facing one surface as a pair; And a second cube corner member in which an optical axis of the first cube corner member is inclined upward or downward by a predetermined tilting angle is used as a pair of second cube corner members facing one surface, At least one auxiliary pattern array arranged; Wherein the main pattern array and the at least one auxiliary pattern array are arranged in a predetermined order.

Description

Cube corner type retroreflective sheet {CUBE-CORNER TYPE RETROREFLECTIVE SHEET}

The present invention relates to a cube corner retroreflective sheet, and in particular, to a cube corner retroreflective sheet having a plurality of cube corner members having different structures, wherein a plurality of cube corner members having the same structure are each formed by a single pattern array, The pattern array of the cube corner type retroreflective sheet is arranged in accordance with a predetermined order or rule.

The retroreflective sheet can reflect incident light toward the light source on the main surface of the sheet. Because of this unique feature, retroreflective sheeting has been used extensively in a wide variety of applications for enhancing conspicuity related to traffic and personal safety signs. Exemplary applications of retroreflective sheeting include road signs, traffic cones, and barriers that enhance identification, particularly under poor lighting conditions such as night driving conditions or in inclement weather conditions, have.

Typically, a cube-cornered retroreflective sheeting uses rigid, interconnected cube corner members that retroreflect incident light on the sheet's primary surface. The basic cube corner elements known in the art for retroreflective reflections are generally tetrahedral structures with three mutually perpendicular sides intersecting at a single reference point or vertex and a triangular bottom surface facing the vertex.

The symmetry axis or optical axis of such a cube corner member extends through the cube vertices and refers to an axis that bisects the inner space of the cube corner member. In a conventional cube corner member having an equilateral triangular bottom surface, the optical axis of the cube corner member is perpendicular to the plane including the triangular bottom surface. In operation, the light incident on the bottom surface of the cube corner member is reflected from each of the three sides of the member and returned to the light source. Generally, the retroreflective sheeting has a structured surface comprising one or more cube-corner reflective element arrays that enhance the visibility of the object.

Such a cube-corner retroreflective sheet exhibits different retroreflective performance depending on the degree of tilt of the optical axis. However, in the case of the cube-corner retroreflective sheet, when the optical axis is not tilted, the effective area where the retroreflection takes place is the largest, and the retroreflective performance is the best. However, there is a region where the retroreflection does not occur.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a cube corner member having a plurality of cube corner members having different structures, And to arrange a plurality of formed pattern arrays according to a preset order or rule.

However, the objects of the present invention are not limited to those mentioned above, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above objects, a cube-corner retroreflective sheeting according to one aspect of the present invention includes a first cube corner member and two first cube corner members facing one surface, A main pattern array arranged; And a second cube corner member in which an optical axis of the first cube corner member is inclined upward or downward by a predetermined tilting angle is used as a pair of second cube corner members facing one surface, Wherein the main pattern array and the at least one auxiliary pattern array are arranged in a predetermined order.

Preferably, the first cube corner member and the second cube corner member have a bottom surface formed in any one of an equilateral triangle, an isosceles triangle, and a dashed triangle.

Preferably, the first cube corner member is formed in the shape of any one of an equilateral triangle, an isosceles triangle, and a dashed triangle, and the bottom of the second cube corner member is formed in the shape of an equilateral triangle, an isosceles triangle, And is formed in a single shape.

Preferably, the tilting angle is between + 3 ° and -3 °.

Preferably, each of the first cube corner member and the second cube corner member has a length of 170 to 240 탆 and a height of 60 to 90 탆.

Preferably, the main pattern array and the auxiliary pattern array have a width of 1000 mu m and a length of 1880 to 2000 mu m.

Preferably, the auxiliary pattern array includes a second cube corner member having a second center axis direction rotated clockwise or counterclockwise by a predetermined angle in a first central axis direction formed by the two first cube corner members And two second cube corner members facing one face are regularly arranged as a pair.

Preferably, the auxiliary pattern array includes at least one auxiliary pattern array having a width smaller than that of the main pattern array.

According to another aspect of the present invention, there is provided a cube-corner retroreflective sheeting comprising: a main pattern array using a first cube corner member, wherein the main pattern array is regularly arranged with two pairs of first cube corner members facing one surface thereof as a pair; And a second cube corner member in which the optical axis of the first cube corner member is tilted to the left or right by a predetermined tilting angle is used as the first cube corner member, Wherein the main pattern array and the at least one auxiliary pattern array are arranged in a predetermined order.

Preferably, the tilting angle is between + 3 ° and -3 °.

Preferably, each of the first cube corner member and the second cube corner member has a length of 170 to 240 탆 and a height of 60 to 90 탆.

Preferably, the auxiliary pattern array includes a second cube corner member having a second center axis direction rotated clockwise or counterclockwise by a predetermined angle in a first central axis direction formed by the two first cube corner members And two second cube corner members facing one face are regularly arranged as a pair.

Preferably, the auxiliary pattern array includes at least one auxiliary pattern array having a width smaller than that of the main pattern array.

According to another aspect of the present invention, there is provided a retroreflective sheeting of a cube-corner type, comprising: a main pattern array having regularly arranged two pairs of first cube corner members facing one surface; And a second cube corner member having a second center axis direction rotated in a clockwise or counterclockwise direction by a predetermined angle in a first central axis direction formed by the two first cube corner members, Characterized in that the main pattern array and the at least one auxiliary pattern array are arranged in a predetermined order so that the main pattern array and the at least one auxiliary pattern array are arranged in a predetermined order .

Preferably, the auxiliary pattern array includes at least one auxiliary pattern array having a width smaller than that of the main pattern array.

Preferably, the first cube corner member is formed in the shape of any one of an equilateral triangle, an isosceles triangle, and a tapered triangle, and the second cube corner member is formed such that its underside is an equilateral triangle, an isosceles triangle, And is formed in any one of the shapes.

Accordingly, the present invention is characterized in that a plurality of cube corner members having different structures are disposed, and a plurality of cube corner members having the same structure are respectively formed by one pattern array, It is possible to minimize the area where the retroreflection does not occur.

In addition, the present invention has an effect that a range of angles at which a retroreflective sheet can be used can be widened because light reflected by incidence of light has a wider directionality.

1 is a first view showing a cube-corner retroreflective sheeting according to an embodiment of the present invention.
2 is a view for explaining the principle of controlling the tilting angle of the cube corner member.
3 is a view showing an effective area according to a tilting angle of the cube corner member.
4 is a second diagram showing a cube-corner retroreflective sheeting according to an embodiment of the present invention.
5 is a third view showing a cube-corner retroreflective sheeting according to an embodiment of the present invention.
6 is a fourth view showing a cube-corner retroreflective sheeting sheet according to an embodiment of the present invention.
7 is a fifth view showing a cube-corner retroreflective sheeting sheet according to an embodiment of the present invention.
8 is a view for explaining the principle of adjusting the tilting angle of the cube corner member.
Fig. 9 is a sixth diagram showing a cube-corner retroreflective sheeting sheet according to an embodiment of the present invention.
10 is a seventh view showing a cube-corner retroreflective sheeting sheet according to an embodiment of the present invention.

Hereinafter, a cube-corner retroreflective sheeting sheet according to an embodiment of the present invention will be described with reference to FIGS. 1 to 10. FIG. The present invention will be described in detail with reference to the portions necessary for understanding the operation and operation according to the present invention.

In describing the constituent elements of the present invention, the same reference numerals may be given to constituent elements having the same name, and the same reference numerals may be given thereto even though they are different from each other. However, even in such a case, it does not mean that the corresponding component has different functions according to the embodiment, or does not mean that the different components have the same function. It should be judged based on the description of each component in the example.

In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In describing the components of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements. When a component is described as being "connected", "coupled", or "connected" to another component, the component may be directly connected or connected to the other component, Quot; may be "connected," "coupled," or "connected. &Quot;

Particularly, in the present invention, a plurality of cube corner members having different structures are disposed, and a plurality of cube corner members having the same structure are respectively formed into one pattern array, and a plurality of formed pattern arrays are arranged in a predetermined order or rule A retroreflective sheet is proposed.

That is, the present invention divides the pattern array into a main pattern array and an auxiliary pattern array, and widens the directionality of light reflected from the main pattern array by using the auxiliary pattern array. The main pattern array and the at least one auxiliary pattern array It can be arranged according to the set order.

For this purpose, the present invention sets different structures of the cube corner members included in each of the main pattern array and the auxiliary pattern array, for example, 1) setting the tilting angles of the cube corner members to be different from each other, or 2) 3) the center axes of the cube corner members are set differently from each other, or 4) the number of cube corner members is set to be different from each other.

Of course, the present invention can be applied by combining two or more of these structures 1), 2), 3) and 4).

1 is a first view showing a cube-corner retroreflective sheeting according to an embodiment of the present invention.

1, the cube-corner retroreflective sheeting according to the present invention may include one main pattern array 100, at least one auxiliary pattern array 200, and the like.

The main pattern array 100 is a regular triangular pyramid having a bottom surface in the form of an equilateral triangle, and the cube corner members whose optical axes are not tilted are regularly arranged. The two cube corner members facing one surface are arranged in a pair They can be arranged regularly. Here, the optical axis of the cube corner member can be defined as a line extending vertically from the apex of the triangular pyramid or from the vertex to the center point of the bottom surface.

At this time, the main pattern array 100 may be an isosceles triangle or a triangular or triangular shape as well as an equilateral triangle. In the case of an isosceles triangle or a triangle, the optical axis of the cube corner member is inclined at a certain angle.

For example, one cube corner member, that is, each side of the bottom surface of the triangular pyramid has a length of 170 to 240 탆 and a height of 60 to 90 탆. The main pattern array 100 may have a width of 5,000 to 20,000 mu m, preferably 10,000 mu m, and a length of about 1000 mu m to about 3,000 mu m, .

That is, if the size of the bottom surface of the cube corner member is 200 μm, the main pattern array 100 may be formed to include about 50 cube corner members of such a size, and about 10880 to 11550 transverse members.

The auxiliary pattern array 200 has a structure of a triangular pyramid whose bottom is an isosceles triangle, and cube corner members whose optical axes are inclined are regularly arranged.

At this time, the auxiliary pattern array 200 may be an equilateral triangle or an equilateral triangle. In case of an equilateral triangle, if the optical axis of the cube corner member is not tilted or is a triangle, the optical axis may be inclined at a certain angle.

The auxiliary pattern array 200 may be implemented by one main pattern array 100 and one auxiliary pattern array 200 as shown in FIG. 2A. In the auxiliary pattern array, the optical axes are inclined upward or downward and their tilting angles are set to be different from each other .

In the cube corner type retroreflective sheeting according to the present invention, one main pattern array 100 and one auxiliary pattern array 200 having different tilting angles are arranged in an intersecting manner.

In FIG. 2B, the main pattern array 100 and the auxiliary pattern array 200 can be implemented by arranging the auxiliary pattern arrays in such a manner that their optical axes are inclined upward or downward, respectively. That is, one main pattern array and two auxiliary pattern arrays are arranged in an intersecting manner.

In this case, the optical axes of the two auxiliary pattern arrays 200 may be inclined in different directions. For example, the first auxiliary pattern array 210 may be formed such that its optical axis is inclined upward, May be implemented such that the optical axis is tilted downward.

The main pattern array 100, the first auxiliary pattern array 210, and the second auxiliary pattern array 220 are alternately arranged in the cube corner type retroreflective sheet according to the present invention. Of course, although two auxiliary pattern arrays are used in the present invention, the present invention is not limited thereto, and three or more auxiliary pattern arrays may be used as needed.

In the present invention, when one main pattern array and two auxiliary pattern arrays are arranged, the main pattern array, the first auxiliary pattern array, and the second auxiliary pattern array are arranged in this order. However, the present invention is not limited thereto, Array, a first auxiliary pattern array, a main pattern array, a second auxiliary pattern array, or the like.

According to the present invention, the cube corner member arranged in the main pattern array is formed in any one of an equilateral triangle, an isosceles triangle, and a dashed triangle, and the cube corner member arranged in the auxiliary pattern array has an equilateral triangle, An isosceles triangle, and an isosceles triangle. That is, the shapes of the main pattern array and the auxiliary pattern array may be different from each other.

2 is a view for explaining the tilting angle when the bottom surface of the cube corner member is an isosceles triangle.

As shown in Fig. 2, a cube corner member having an isosceles triangle bottom is shown in which the optical axis of each of the two cube corner members forming a pair in the figure (a) is inclined upward toward the center axis And (b), the optical axis of each of the two cube corner members forming a pair is inclined downward, which is the direction in which the optical axis approaches from the central axis.

At this time, it is preferable that the tilting angle at which the optical axis is tilted upward or downward is adjusted between + 3 ° and -3 °. Of course, the range of such a tilting angle can be made larger or smaller as needed.

3 is a view showing an effective area according to a tilting angle of the cube corner member.

As shown in FIG. 3, the effective area in which light is reflected by a plurality of cube corner members in which the optical axis is not tilted is shown in FIG. 3 (a), and a large number of cube corner members (C) shows the effective area in which light is reflected by a number of cube corner members whose optical axes are tilted downward.

It can be seen that the optical axis has different effective areas depending on the degree of tilting. In the present invention, by using such a characteristic, it is desired to arrange pattern arrays having different degrees of inclination of the optical axis so as to be repeatedly crossed to improve the directionality of reflected light.

4 is a second diagram showing a cube-corner retroreflective sheeting according to an embodiment of the present invention.

As shown in FIG. 4, the main pattern array 100 and the auxiliary pattern array 200 may be realized as shown in FIG. 4 (a). In the auxiliary pattern array, the optical axis is tilted upward or downward, The directions of the central axes of the cube corner members may be set different from each other while setting the angles to be different from each other. Here, the central axis direction refers to the direction of the straight line formed by the two cube corner members facing one surface, for example, can be variously changed from 0 degrees to 360 degrees.

In the cube corner type retroreflective sheeting according to the present invention, one main pattern array 100 and one auxiliary pattern array 200 having different tilting angles are arranged in an intersecting manner.

The auxiliary pattern array may be implemented by one main pattern array 100 and two auxiliary pattern arrays 200 in FIG. 2B. In each of the auxiliary pattern arrays, the optical axis is inclined upward or downward to set the tilting angles to be different from each other, The center axis directions of the members may be set differently from each other.

At this time, the two auxiliary pattern arrays 200 may be implemented to have different center axis directions. For example, the first auxiliary pattern array 210 may be implemented to have a central axis direction of 90 degrees, and the second auxiliary pattern array 220 may be implemented to have a central axis direction of 180 degrees.

Here, the 0 degree orientation direction of the main pattern array 100 and the 180 degree center axis direction of the second auxiliary pattern array 220 can be seen in the same manner, but the characteristics of the cube corner member may be somewhat different It is desirable to look differently.

The main pattern array 100, the first auxiliary pattern array 210, and the second auxiliary pattern array 220 are alternately arranged in the cube corner type retroreflective sheet according to the present invention.

5 is a third view showing a cube-corner retroreflective sheeting according to an embodiment of the present invention.

5, the main pattern array 100 and the auxiliary pattern array 200 may be realized by arranging the auxiliary pattern array 200 in such a manner that the optical axis is shifted upward or downward The widths of the auxiliary pattern arrays 200 may be set differently from each other while the tilting angles are set to be different from each other. That is, the width of the auxiliary pattern array 200 may be set smaller than the width of the main pattern array 100, for example, a half of the width of the main pattern array.

In the cube corner type recursive bar sheet according to the present invention, one main pattern array 100 and one auxiliary pattern array 200 having different lengths of tilting angle and width are arranged in an intersecting manner.

The reason why the width of the auxiliary pattern array is set to be small is because the area of the cube corner member where the optical axis is not tilted is the most excellent but the light is still not reflected. Therefore, the auxiliary pattern array is used, Since its own characteristics are not excellent, it is intended to reduce the use area.

The auxiliary pattern array may be implemented by one main pattern array 100 and two auxiliary pattern arrays 200 in FIG. 2B. In each of the auxiliary pattern arrays, the optical axis is inclined upward or downward to set different tilting angles, The widths of the respective arrays can be set to be different from each other. That is, the width of the first auxiliary pattern array 210 and the width of the second auxiliary pattern array 220 are set to be smaller than the width of the main pattern array 100, The widths of the auxiliary pattern array 220 are set to be equal to each other.

The main pattern array 100, the first auxiliary pattern array 210, and the second auxiliary pattern array 220 are alternately arranged in the cube corner type retroreflective sheet according to the present invention.

In the present invention, when one main pattern array and two auxiliary pattern arrays are arranged, the widths of the first auxiliary pattern array and the second auxiliary pattern array are formed to be smaller than the width of the main pattern array. However, Accordingly, only one of the first auxiliary pattern array and the second auxiliary pattern array may have a small width.

6 is a fourth view showing a cube-corner retroreflective sheeting sheet according to an embodiment of the present invention.

As shown in FIG. 6, the auxiliary pattern array 200 may be implemented by one main pattern array 100 and one auxiliary pattern array 200 in FIG. The widths of the auxiliary pattern arrays 200 may be set differently from each other while setting the directions to be different from each other. That is, the width of the auxiliary pattern array 200 may be set smaller than the width of the main pattern array 100, for example, a half of the width of the main pattern array.

In the cube corner type recursive barber sheet according to the present invention, one main pattern array 100 and one auxiliary pattern array 200 having different lengths of the central axis direction and width are arranged in an intersecting manner.

The auxiliary pattern array may be implemented by one main pattern array 100 and two auxiliary pattern arrays 200 in FIG. 2B, wherein each of the auxiliary pattern arrays has a center axis direction of the cube corner members different from each other, The widths can be set differently. That is, the width of the first auxiliary pattern array 210 and the width of the second auxiliary pattern array 220 are set to be smaller than the width of the main pattern array 100, The widths of the auxiliary pattern array 220 are set to be equal to each other.

The main pattern array 100, the first auxiliary pattern array 210, and the second auxiliary pattern array 220 are alternately arranged in the cube corner type retroreflective sheet according to the present invention.

7 is a fifth view showing a cube-corner retroreflective sheeting sheet according to an embodiment of the present invention.

7, the main pattern array 100 according to the present invention has a regular triangular pyramid structure having a bottom surface of an equilateral triangle, cube corner members whose optical axes are not inclined, and auxiliary pattern arrays 200 Is a triangular-pyramidal structure whose bottom surface is a triangle-like triangle, and cube corner members whose optical axes are inclined are regularly arranged.

At this time, the main pattern array 100 may be an isosceles triangle or a triangular or triangular shape as well as an equilateral triangle. In the case of an isosceles triangle or a triangle, the optical axis of the cube corner member is inclined at a certain angle.

In addition, the auxiliary pattern array 200 may have an equilateral triangle or an equilateral triangle as well as a triangle having a bottom face. In case of an equilateral triangle, if the optical axis of the cube corner member is not tilted or is an isosceles triangle, the optical axis may be inclined at a certain angle.

The main pattern array 100 and the auxiliary pattern array 200 may be implemented as shown in FIG. 1 (a). The optical axes of the auxiliary pattern arrays may be tilted to the left or right to set different tilting angles .

In the cube corner type retroreflective sheeting according to the present invention, one main pattern array 100 and one auxiliary pattern array 200 having different tilting angles are arranged in an intersecting manner.

In FIG. 3B, one main pattern array 100 and two auxiliary pattern arrays 200 may be implemented. In each of the auxiliary pattern arrays, the optical axis may be tilted to the left or right to set different tilting angles. That is, one main pattern array and two auxiliary pattern arrays are arranged in an intersecting manner.

In this case, the optical axes of the two auxiliary pattern arrays 200 may be inclined in different directions. For example, the first auxiliary pattern array 210 may be configured such that the optical axis thereof is tilted to the left, May be implemented such that the optical axis is tilted to the right.

In the present invention, the optical axis of the cube corner member constituting the auxiliary pattern array can be set to be tilted to the left or right, thereby improving the reflection performance on the side surface.

8 is a view for explaining a tilting angle in the case where the bottom surface of the cube corner member is a semicircular triangle.

As shown in Fig. 8, the cube corner member having a bottom side of a triangular prism shape is shown in which the optical axis of each of the two cube corner members forming a pair in the figure (a) is inclined to the right from the center of the central axis, (b) shows the case where the optical axis of each of the two cube corner members forming a pair is inclined to the left from the center of the central axis.

In addition, the cube corner member is formed such that its optical axis is inclined only to the left or right, and the optical axis may be formed to be a left upper end or a left lower end, or a right upper end or a right lower end.

At this time, it is preferable that the tilting angle at which the optical axis is tilted to the left or right is adjusted between +3 ㅀ and 3 ㅀ. Of course, the range of such a tilting angle can be made larger or smaller as needed.

Fig. 9 is a sixth diagram showing a cube-corner retroreflective sheeting sheet according to an embodiment of the present invention.

As shown in FIG. 9, the main pattern array 100 and the auxiliary pattern array 200 may be implemented as shown in FIG. 9A. In the auxiliary pattern array, the optical axis is tilted to the left or right, The directions of the central axes of the cube corner members may be set different from each other while setting the angles to be different from each other.

In the cube corner type retroreflective sheeting according to the present invention, one main pattern array 100 and one auxiliary pattern array 200 having different tilting angles are arranged in an intersecting manner.

The auxiliary pattern array may be implemented by one main pattern array 100 and two auxiliary pattern arrays 200 in FIG. 2B. In each of the auxiliary pattern arrays, the optical axis is tilted to the left or right to set the tilting angles to be different from each other, The center axis directions of the members may be set differently from each other.

At this time, the two auxiliary pattern arrays 200 may be implemented to have different center axis directions. For example, the first auxiliary pattern array 210 may be implemented to have a central axis direction of 90 degrees, and the second auxiliary pattern array 220 may be implemented to have a central axis direction of 180 degrees.

The main pattern array 100, the first auxiliary pattern array 210, and the second auxiliary pattern array 220 are alternately arranged in the cube corner type retroreflective sheet according to the present invention.

10 is a seventh view showing a cube-corner retroreflective sheeting sheet according to an embodiment of the present invention.

As shown in FIG. 10, the main pattern array 100 and the auxiliary pattern array 200 may be implemented as one main pattern array 100 and the auxiliary pattern array 200 shown in FIG. The widths of the auxiliary pattern arrays 200 may be set differently from each other while the tilting angles are set to be different from each other. That is, the width of the auxiliary pattern array 200 may be set smaller than the width of the main pattern array 100, for example, a half of the width of the main pattern array.

In the cube corner type recursive bar sheet according to the present invention, one main pattern array 100 and one auxiliary pattern array 200 having different lengths of tilting angle and width are arranged in an intersecting manner.

The auxiliary pattern array may be implemented by one main pattern array 100 and two auxiliary pattern arrays 200 in FIG. 2B. In each of the auxiliary pattern arrays, the optical axis is tilted to the left or right, The widths of the respective arrays can be set to be different from each other. That is, the width of the first auxiliary pattern array 210 and the width of the second auxiliary pattern array 220 are set to be smaller than the width of the main pattern array 100, The widths of the auxiliary pattern array 220 are set to be equal to each other.

The main pattern array 100, the first auxiliary pattern array 210, and the second auxiliary pattern array 220 are alternately arranged in the cube corner type retroreflective sheet according to the present invention.

It is to be understood that the present invention is not limited to these embodiments, and all of the elements constituting the embodiments of the present invention described above may be combined or operated in one operation. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. In addition, although all of the components may be implemented as one independent hardware, some or all of the components may be selectively combined to perform a part or all of the functions in one or a plurality of hardware. As shown in FIG. In addition, such a computer program may be stored in a computer-readable medium such as a USB memory, a CD disk, a flash memory, etc., and read and executed by a computer to implement embodiments of the present invention. As the storage medium of the computer program, a magnetic recording medium, an optical recording medium, a carrier wave medium, or the like may be included.

Furthermore, all terms including technical or scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined in the Detailed Description. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or essential characteristics thereof. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

100: main pattern array
200: auxiliary pattern array
210: a first auxiliary pattern array
220: second auxiliary pattern array

Claims (16)

A main pattern array which is regularly arranged by using a first cube corner member as a pair of two first cube corner members facing one surface; And
A second cube corner member in which the optical axis of the first cube corner member is inclined upward or downward by a predetermined tilting angle is used and two second cube corner members facing one surface are arranged in a regular manner At least one auxiliary pattern array,
Wherein the main pattern array and the at least one auxiliary pattern array are arranged in a predetermined order,
Wherein the optical axis of the first cube corner member extends through a vertex of the first cube corner member and divides the internal space of the first cube corner member into three halves,
Wherein the bottom surface of the first cube corner member is formed in the shape of an equilateral triangle so that the optical axis of the first cube corner member is perpendicular to the plane including the bottom surface of the first cube corner member,
The bottom surface of the second cube corner member is formed in the shape of an isosceles triangle,
Wherein a first center axis of the main pattern array corresponding to a straight line formed by the two first cube corner members facing the one surface and a second center axis intersecting with the second center cube corner members Wherein the second center axes of the auxiliary pattern arrays are the same or different from each other. delete delete The method according to claim 1,
Wherein the tilting angle is between + 3 ° and -3 °. The method according to claim 1,
Wherein the first cube corner member and the second cube corner member are formed such that the length of each side of the bottom surface is 170 to 240 탆 and the height of the first and second cube corner members is 60 to 90 탆. The method according to claim 1,
Wherein the main pattern array and the auxiliary pattern array have a width of 10,000 m and a length of 1880 to 2000 m. delete The method according to claim 1,
Wherein the auxiliary pattern array includes at least one auxiliary pattern array having a width smaller than that of the main pattern array. A main pattern array which is regularly arranged by using a first cube corner member as a pair of two first cube corner members facing one surface; And
The second cube corner member having the optical axis of the first cube corner member tilted to the left or right by a predetermined tilting angle is used and two second cube corner members facing one surface are arranged in a regular arrangement At least one auxiliary pattern array,
Wherein the main pattern array and the at least one auxiliary pattern array are arranged in a predetermined order,
Wherein the optical axis of the first cube corner member extends through a vertex of the first cube corner member and divides the internal space of the first cube corner member into three halves,
Wherein the bottom surface of the first cube corner member is formed in the shape of an equilateral triangle so that the optical axis of the first cube corner member is perpendicular to the plane including the bottom surface of the first cube corner member,
Wherein the bottom surface of the second cube corner member is formed in the shape of a triangular prism,
Wherein a first center axis of the main pattern array corresponding to a straight line formed by the two first cube corner members facing the one surface and a second center axis intersecting with the second center cube corner members Wherein the second center axes of the auxiliary pattern arrays are the same or different from each other. 10. The method of claim 9,
Wherein the tilting angle is between + 3 ° and -3 °. 10. The method of claim 9,
Wherein the first cube corner member and the second cube corner member are formed such that the length of each side of the bottom surface is 170 to 240 탆 and the height of the first and second cube corner members is 60 to 90 탆.
delete 10. The method of claim 9,
Wherein the auxiliary pattern array includes at least one auxiliary pattern array having a width smaller than that of the main pattern array. delete delete delete

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