Arc mesh structure

Abstract

The utility model discloses an arc grid structure which comprises a plurality of arc units, each arc unit comprises six S-shaped arcs, and the end points of the six S-shaped arcs are connected end to end to form the arc unit. The S-shaped arc comprises a first semicircle and a second semicircle, and the bending direction of the first semicircle is opposite to the bending direction of the second semicircle. A traditional linear mesh grid is changed into two S-shaped arc lines in different directions, the starting point of one S-shaped arc line coincides with the end point of the other S-shaped arc line and then does not intersect with the other S-shaped arc line, and therefore it is guaranteed that only three S-shaped arc lines exist at each intersection node in a pattern, and the included angle between the three S-shaped arc line segments is about 120 degrees; in this way, the problem that the imaging effect is affected by thick and big nodes due to dense line segments at nodes between lines or small included angles between the line segments is well avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of functional observation windows, and more specifically, to an arc grid structure. Background Art

[0002] Metal mesh is used on observation windows (such as electromagnetic shielding films, heating films, antennas, etc.). After light passes through the periodic grid, it forms unevenly distributed stray light due to diffraction, affecting human vision or causing interference to the imaging system. According to the invention patent "A Metal Mesh Structure Based on Randomly Distributed Circular Rings and Its Design Method" (Patent No.: CN201910592963.8), the circular ring design and random distribution can reduce stray light energy. However, in the actual manufacturing process, the more line segments at the nodes between the lines, or the smaller the angle between the line segments, the larger the nodes will be, which will ultimately affect the imaging effect. Utility Model Content

[0003] The present invention provides an arc mesh structure to solve the problems raised in the above-mentioned background technology. To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an arc mesh structure, comprising a plurality of arc units, wherein the plurality of arc units are spliced to form a structure similar to a honeycomb; the arc unit comprises six S-shaped arcs, the endpoints of the six S-shaped arcs are connected end to end to form the arc unit; the distances between the two end points of the six S-shaped arcs are the same, and all the endpoints of the six S-shaped arcs can be connected in sequence to form a regular hexagon; the S-shaped arc comprises a first semicircular arc and a second semicircular arc, and the bending direction of the first semicircular arc is opposite to the bending direction of the second semicircular arc.

[0004] Preferably, the S-shaped arc includes a first endpoint, a random point and a second endpoint; the first semicircular arc is arranged between the first endpoint and the random point, and the second semicircular arc is arranged between the random point and the second endpoint; the random point is located at any point between the first endpoint and the second endpoint, and cannot coincide with the first endpoint and the second endpoint.

[0005] Preferably, the distance between the first endpoint and the second endpoint is 40-200 μm.

[0006] Preferably, three S-shaped arcs intersect at the first endpoint or the second endpoint at the same time; the included angle of the three intersecting S-shaped arcs is 115-125°.

[0007] Preferably, adjacent arc units share an S-shaped arc.

[0008] Preferably, a plurality of S-shaped arcs form a circulation unit, a plurality of complete arc units are formed in each circulation unit, and adjacent arc units in the circulation unit have different shapes; a plurality of circulation units with the same shape form an arc grid structure.

[0009] Preferably, the lengths of the two endpoints of the S-shaped arc are a, and the number of complete arc units in the cyclic unit is b; the horizontal distance of the cyclic unit is ab, and the vertical distance is b√3*a / 2.

[0010] Preferably, the number of complete arc units in the cyclic unit is 6; the horizontal distance of the cyclic unit is 6a, and the vertical distance is 3√3*a.

[0011] Compared with existing technologies, the present invention offers the following advantages: It adopts an overall honeycomb structure, replacing the traditional linear grid with two S-shaped arcs in different directions. The starting point of one S-shaped arc coincides with the end point of the other, and the two no longer intersect. This ensures that each intersection in the pattern contains only three S-shaped arcs, and the angle between the three S-shaped arc segments is approximately 120°. This effectively avoids the problem of dense segments or small angles between segments at nodes between lines, which can lead to thick nodes that affect imaging quality. The present invention effectively reduces stray light energy while avoiding thick nodes, thereby improving visual quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural diagram of the arc grid structure of an embodiment of the present utility model;

[0013] Figure 2 This is a view of an arc unit of the arc grid structure according to an embodiment of the present utility model;

[0014] Figure 3 This is a structural diagram of the combined state of three adjacent arc units of the arc grid structure according to an embodiment of the present utility model;

[0015] Figure 4 A schematic diagram of a circulation unit of the arc grid structure according to an embodiment of the present invention;

[0016] exist Figures 1 to 4 , the corresponding relationship between the names of the components and the accompanying drawing numbers is as follows:

[0017] 1--Arc unit, 2--S-shaped arc, 3--First semicircular arc, 4--Second semicircular arc, 5--First endpoint, 6--Random point, 7--Second endpoint. DETAILED DESCRIPTION

[0018] The following embodiments of the present invention are further described in detail with reference to the accompanying drawings and examples. The accompanying drawings are for reference only and are not intended to limit the scope of the present invention. The following examples are intended to illustrate the present invention but are not intended to limit the scope of the present invention.

[0019] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0021] Please refer to Figures 1 to 4 The utility model provides an arc grid structure, comprising a plurality of arc units, which are spliced to form a structure similar to a honeycomb; the arc unit comprises six S-shaped arcs, and the endpoints of the six S-shaped arcs are connected end to end to form the arc unit; the distances between the two end points of the six S-shaped arcs are the same, and all the endpoints of the six S-shaped arcs can be connected in sequence to form a regular hexagon; the S-shaped arc comprises a first semicircular arc and a second semicircular arc, and the bending direction of the first semicircular arc is opposite to the bending direction of the second semicircular arc.

[0022] In the embodiment of the present invention, please see Figure 1 , Figure 1 The arc grid structure is composed of multiple arc units 1. Adjacent arc units 1 are connected to each other and share adjacent edges. The arc unit 1 is composed of six S-shaped arcs 2. The shapes of the six S-shaped arcs 2 are different. Please refer to Figure 2 Each S-shaped arc 2 can be composed of two semicircular arcs, but the diameters of the semicircular arcs are different. The same thing about the six S-shaped arcs 2 is that the distances between the two endpoints of all S-shaped arcs 2 are the same. Please refer to Figure 3When the endpoints of the six S-shaped arcs 2 in the arc unit 1 are connected in sequence, a hexagon can be formed. The hexagon in this embodiment is a regular hexagon, that is, the endpoints of the S-shaped arcs 2 in the arc unit 1 in this embodiment are relatively fixed, and they can be connected in sequence to form a regular hexagon. In the actual arc grid structure, Figure 3 The regular hexagon in does not exist. Figure 3 The regular hexagon shown is used to illustrate the distance and positional relationship between the endpoints of the six S-shaped arcs 2 .

[0023] Please refer to Figure 3 , Figure 3 The S-shaped arc 2 includes a first semicircular arc 3 and a second semicircular arc 4, and the bending directions of the first semicircular arc 3 and the second semicircular arc 4 are opposite. The diameters of the first semicircular arc 3 and the second semicircular arc 4 are both randomly generated.

[0024] This embodiment resembles a honeycomb structure, replacing the traditional linear grid with two arc segments oriented in different directions. The starting point of each arc segment coincides with the endpoint of another arc segment, and the segments no longer intersect. This ensures that there are only three line segments at each node in the pattern, with the angles between the segments being approximately 120°. This structural design significantly improves the problem of excessive number of line segments at nodes between lines, or small angles between segments, which can lead to thicker nodes and ultimately affect imaging quality. It also effectively reduces stray light energy, making the functional observation window more transparent, reducing the impact of light diffraction on human vision, and effectively preventing stray light from interfering with the imaging system.

[0025] Preferably, the S-shaped arc 2 includes a first endpoint 5, a random point 6, and a second endpoint 7; the first semicircular arc 3 is located between the first endpoint 5 and the random point 6, and the second semicircular arc 4 is located between the random point 6 and the second endpoint 7; the random point 6 is located at any point between the first endpoint 5 and the second endpoint 7, and cannot coincide with the first endpoint 5 and the second endpoint 7. In this embodiment, a random point between the first endpoint 5 and the second endpoint 7 is the random point 6, wherein the first endpoint 5 and the random point 6 serve as the two endpoints of the first semicircular arc 3, the second endpoint 7 and the random point 6 serve as the two endpoints of the second semicircular arc 4, and the first semicircular arc 3 and the second semicircular arc 4 intersect at the random point 6. Through the above structural design, the position of the random point 6 can be arbitrarily changed, making the shape of the S-shaped arc 2 diverse, thereby increasing the pattern diversity of the entire arc grid, further reducing the periodic distribution of the grid, and reducing the diffraction of light.

[0026] Preferably, the distance between the first endpoint 5 and the second endpoint 7 is 40-200 μm.

[0027] Preferably, three S-shaped arcs 2 intersect at the first endpoint 5 or the second endpoint 7 at the same time; and the included angle of the three intersecting S-shaped arcs 2 is 115-125°.

[0028] Preferably, adjacent arc units 1 share an S-shaped arc 2 .

[0029] Preferably, a plurality of S-shaped arcs 2 form a circulation unit, and a plurality of complete arc units 1 are formed in each circulation unit. Adjacent arc units 1 in the circulation unit have different shapes; a plurality of circulation units with the same shape form an arc grid structure.

[0030] In practice, if the size required in actual application is too large, you can first make the circular unit, and then arrange the circular unit in an array to quickly and evenly make the arc grid structure. Figure 4 , inside the circulatory unit, the structures of the various arc units 1 are different, wherein the more complete arc units 1 contained in the circulatory unit, the more uniform the diffraction effect.

[0031] Preferably, the lengths of the two endpoints of the S-shaped arc 2 are a, and the number of complete arc units 1 in the cyclic unit is b; the horizontal distance of the cyclic units is ab, and the vertical distance is b√3*a / 2. Through the above structural design, the cyclic unit can just accommodate b complete arc units, and the boundary of the cyclic unit is calculated based on the structure of the regular hexagon formed by the endpoints of the arc units 1. For example, the height of the regular hexagon formed by the endpoints of each arc unit 1 is √3*a. In the vertical direction, the cyclic unit multiplies the height by half of the number of regular hexagons (i.e., the number of arc units), i.e., b√3*a / 2. In the horizontal direction, the number of regular hexagons (i.e., the number of arc units) multiplied by the side length, i.e., ab, is used to achieve the optimal effect.

[0032] In this embodiment, the regular hexagonal structure does not exist in the final arc grid structure, and is only used to assist in determining the position and direction of each S-shaped arc 2, arc unit 1 and circulation unit.

[0033] Preferably, the number of complete arc units 1 within the recurrent unit is 6; the horizontal spacing of the recurrent units is 6a, and the vertical spacing is 3√3*a. With the above structural design, when the number of arc units 1 within the recurrent unit (i.e., the number of regular hexagons) is 6, and the distance between the two endpoints of the S-shaped arc 2 on the arc unit 1 (i.e., the side length of the regular hexagon) is a, the recurrent unit array can be obtained with a horizontal spacing of 6a and a vertical spacing of 3√3a.

[0034] Compared with existing technologies, the present invention offers the following advantages: It adopts an overall honeycomb structure, replacing the traditional linear grid with two S-shaped arcs in different directions. The starting point of one S-shaped arc coincides with the end point of the other, and the two no longer intersect. This ensures that each intersection in the pattern contains only three S-shaped arcs, and the angle between the three S-shaped arc segments is approximately 120°. This effectively avoids the problem of dense segments or small angles between segments at nodes between lines, which can lead to thick nodes that affect imaging quality. The present invention effectively reduces stray light energy while avoiding thick nodes, thereby improving visual quality.

[0035] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A curved mesh structure, characterized in that: The invention comprises a plurality of arc units (1), wherein the plurality of arc units are spliced to form a structure similar to a honeycomb; the arc unit comprises six S-shaped arcs (2), wherein the endpoints of the six S-shaped arcs are connected end to end to form the arc unit; the distances between the two end points of the six S-shaped arcs are the same, and all the endpoints of the six S-shaped arcs can be connected in sequence to form a regular hexagon; the S-shaped arc comprises a first semicircular arc (3) and a second semicircular arc (4), and the bending direction of the first semicircular arc is opposite to the bending direction of the second semicircular arc.

2. The arc grid structure according to claim 1, wherein: The S-shaped arc includes a first endpoint (5), a random point (6) and a second endpoint (7); the first semicircular arc is located between the first endpoint and the random point, and the second semicircular arc is located between the random point and the second endpoint; the random point is located at any point between the first endpoint and the second endpoint, and cannot coincide with the first endpoint and the second endpoint.

3. The arc grid structure according to claim 2, characterized in that: The distance between the first endpoint and the second endpoint is 40-200 μm.

4. The arc grid structure according to claim 2, wherein: Three S-shaped arcs intersect at the first endpoint or the second endpoint; the included angle of the three intersecting S-shaped arcs is 115-125°.

5. The arc grid structure according to claim 1, wherein: Adjacent arc units share an S-shaped arc.

6. The arc grid structure according to claim 1, characterized in that: A plurality of S-shaped arcs form a circulation unit, and a plurality of complete arc units are formed in each circulation unit. Adjacent arc units in a circulation unit have different shapes; a plurality of circulation units with the same shape form an arc grid structure.

7. The arc grid structure according to claim 6, characterized in that: The lengths of the two endpoints of the S-shaped arc are a, and the number of complete arc units in the cyclic unit is b; the horizontal distance of the cyclic unit is ab, and the vertical distance is b√3*a / 2.

8. The arc grid structure according to claim 7, characterized in that: The number of complete arc units in the cyclic unit is 6; the horizontal distance of the cyclic unit is 6a, and the vertical distance is 3√3*a.

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