Radar detectable golf ball

Abstract

To discloses a radar detectable golf ball including a spherical body and a radar detectable pattern layer.SOLUTION: A spherical body has an intermediate annular surface around a center of the spherical body, and a radar-detectable pattern layer is formed on the intermediate annular surface. The radar-detectable pattern layer includes a plurality of reflective patterns equally spaced at a prescribed arc length, the prescribed arc length being within a range of 5 mm to 70 mm. Therefore, complete course of a golf ball's travel and a player's hitting performance can be tracked by a radar system.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to golf balls, and more particularly to radar-detectable golf balls suitable for detection and tracking by radar systems in distance-limited environments (e.g., indoor driving ranges) to provide golfers with accurate and reliable hitting performance data. [Background technology]

[0002] Golf is a sport that is not limited by gender or age, and with the improvement of living standards and the importance of outdoor recreational life, more and more people are taking part in this sport. In order to improve their technique with the golf ball, many enthusiasts usually practice their swing at a golf ball driving range, and even if they receive guidance from a coach during the practice process, the effect is not as expected. Therefore, companies have developed radar tracking systems that are used to obtain ball launch conditions and flight data, and contribute to improving players' hitting performance.

[0003] Currently, the most common method for detecting a golf ball with a radar system is to attach a radar-reflective adhesive sheet directly to the outer surface of the ball. However, reflective adhesive sheets have many inconveniences in their use, such as the need for manual attachment, the need for precise positioning on the ball, and the need for replacement when worn. Therefore, how to overcome these drawbacks through structural design improvements has become an important issue for businesses. Summary of the Invention [Problem to be solved by the invention]

[0004] The technical problem that the present invention aims to solve is to address the shortcomings of the prior art by providing a radar-detectable golf ball that embodies the concept of the present invention, in which a plurality of reflective patterns of designed shapes and sizes are placed inside or outside the spherical shell, allowing a radar system to track the complete course of the golf ball's movement and related impact data. [Means for solving the problem]

[0005] To solve the above technical problems, one technical solution adopted by the present invention is to provide a radar-detectable golf ball including a sphere and a radar-detectable pattern layer. The sphere has a middle annular surface surrounding the center of the sphere, and the radar-detectable pattern layer is formed on the middle annular surface. The radar-detectable pattern layer includes a plurality of reflective patterns equally spaced at a predetermined arc length, the predetermined arc length being within a range of 5 mm to 70 mm.

[0006] In an embodiment of the present invention, the number of the reflective patterns is three or more.

[0007] In an embodiment of the present invention, the number of the reflection patterns is four, and they are located at 0 degree, 90 degree, 180 degree, and 270 degree positions of the intermediate annular surface, respectively.

[0008] In an embodiment of the present invention, the sphere defines a circular line with the center of the sphere as its center, and each of the reflective patterns includes two reflective pattern units arranged symmetrically with respect to the circular line.

[0009] In an embodiment of the present invention, each of the reflective pattern units includes two pattern subunits arranged symmetrically with respect to an axis of symmetry, the axis of symmetry being perpendicular to the circular line. Each of the pattern subunits includes a first stripe-shaped pattern and a second stripe-shaped pattern connected to each other, the first stripe-shaped pattern being parallel to the circular line, and the second stripe-shaped pattern being located between the first stripe-shaped pattern and the circular line and forming an angle with the first stripe-shaped pattern, the angle being 1 to 120 degrees. The second stripe-shaped pattern is closer to the axis of symmetry than the first stripe-shaped pattern.

[0010] In an embodiment of the present invention, when the sphere is defined as a circular line with the center of the sphere as the circle center, each of the reflection patterns is an S-shaped pattern, and its position corresponds to the circular line. The position of the S-shaped pattern corresponding to the circular line means, for example, that the symmetric center point of the S-shaped pattern is located on the circular line and exhibits rotational symmetry (central symmetry) with respect to the symmetric center point.

[0011] In an embodiment of the present invention, the height and width of each of the reflective patterns are each independently within the range of 5 mm to 70 mm.

[0012] In an embodiment of the present invention, the sphere includes a spherical core and a spherical shell covering the outside of the spherical core, and the radar-detectable pattern layer is formed between the spherical core and the spherical shell or is formed on the spherical shell.

[0013] In an embodiment of the present invention, the sphere includes an intermediate layer formed between the spherical core and the spherical shell, and the radar-detectable pattern layer is formed on the intermediate layer and covered by the spherical shell.

[0014] In an embodiment of the present invention, the sphere includes a first adhesive layer formed between the intermediate layer and the spherical shell, and the radar-detectable pattern layer is covered by the first adhesive layer.

[0015] In an embodiment of the present invention, the sphere includes a second adhesive layer formed between the intermediate layer and the first adhesive layer, and the radar-detectable pattern layer is formed on the second adhesive layer and covered by the first adhesive layer.

[0016] In an embodiment of the present invention, the sphere includes an intermediate layer arranged to surround the spherical core, an adhesive layer formed between the intermediate layer and the spherical shell, and a finish paint layer covering the outside of the spherical shell, and the radar-detectable pattern layer is formed on the spherical shell and covered by the finish paint layer.

[0017] In an embodiment of the present invention, the sphere includes at least one primer layer formed between the spherical shell and the finish paint layer, and the radar-detectable pattern layer is formed on the primer layer.

[0018] In an embodiment of the present invention, the radar-detectable pattern layer is formed from an ink composition, and the ink composition contains reflective particles having a particle diameter of 20 μm to 300 μm. [Effects of the Invention]

[0019] Overall, the radar-detectable golf ball provided by the present invention has a radar-detectable pattern layer formed on the middle annular surface of a sphere and includes a plurality of equally spaced reflective patterns at a predetermined arc length (within a range of 5 mm to 70 mm), allowing it to be detected and tracked by a radar system in distance-limited environments (e.g., indoor driving ranges) and provide golfers with accurate and reliable hitting performance data. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a schematic diagram of a radar-detectable golf ball according to a first embodiment of the present invention at a certain viewing angle. [Figure 2] 3 is a schematic diagram of another viewing angle of the radar-detectable golf ball of the first embodiment of the present invention. FIG. [Figure 3] FIG. 2 is a schematic diagram of yet another viewing angle of the radar-detectable golf ball of the first embodiment of the present invention. [Figure 4] 2 is a schematic diagram of the arrangement of multiple reflective patterns of the radar-detectable pattern layer of the first embodiment of the present invention on the mid-annular surface of a sphere. FIG. [Figure 5] 3 is a schematic diagram of a radar-detectable golf ball according to a second embodiment of the present invention at a certain viewing angle. FIG. [Figure 6] FIG. 2 is a schematic diagram of another viewing angle of the radar-detectable golf ball of the second embodiment of the present invention. [Figure 7] FIG. 10 is a schematic diagram of yet another viewing angle of the radar-detectable golf ball of the second embodiment of the present invention. [Figure 8] 4 is a schematic diagram of the arrangement of multiple reflective patterns of a radar-detectable pattern layer of a second embodiment of the present invention on the mid-annular surface of a sphere. FIG. [Figure 9] 10 is a schematic diagram of a radar-detectable golf ball according to a third embodiment of the present invention at a certain viewing angle. FIG. [Figure 10] FIG. 10 is a schematic diagram of another viewing angle of the radar-detectable golf ball of the third embodiment of the present invention. [Figure 11] FIG. 10 is a schematic diagram of yet another viewing angle of the radar-detectable golf ball of the third embodiment of the present invention. [Figure 12] FIG. 10 is a schematic diagram of the arrangement of multiple reflective patterns of a radar-detectable pattern layer of a third embodiment of the present invention on the mid-annular surface of a sphere. [Figure 13] 1A-1C are schematic diagrams of an operation for forming a radar-detectable pattern layer of a first embodiment of the present invention on a sphere. [Figure 14] 1A-1C are schematic diagrams of an operation for forming a radar-detectable pattern layer of a first embodiment of the present invention on a sphere. [Figure 15] 1 is a schematic diagram of a sphere of Example 1 of a radar-detectable golf ball of the present invention. FIG. [Figure 16]FIG. 2 is another schematic diagram of the sphere of Example 1 of the radar-detectable golf ball of the present invention. [Figure 17] FIG. 2 is a schematic diagram of a sphere of Example 2 of a radar-detectable golf ball of the present invention. [Figure 18] FIG. 2 is a schematic diagram of a sphere of a radar-detectable golf ball according to a third embodiment of the present invention. [Figure 19] FIG. 1 is a schematic diagram of a sphere of a radar-detectable golf ball according to Example 4 of the present invention. [Figure 20] FIG. 1 is a schematic diagram of a sphere of a radar-detectable golf ball according to a fifth embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0021] To better understand the features and technical contents of the present invention, please refer to the following detailed description of the present invention and the drawings, which are provided for reference and explanation only and do not limit the scope of the present invention.

[0022] The following describes the implementation of the "radar detectable golf ball" according to the present invention through certain specific embodiments, and those skilled in the art will be able to understand the advantages and effects of the present invention based on the content disclosed herein. The present invention can be implemented or applied through other different specific embodiments, and various modifications and changes can be made to the details herein based on different perspectives and applications without departing from the concept of the present invention. It should be noted in advance that the accompanying drawings of the present invention are for simple schematic illustrations and are not drawn to actual size. The technical content of the present invention will be described in more detail based on the following embodiments, but the scope of protection of the present invention is not limited by the disclosed content.

[0023] It should be understood that although the present specification may use terms such as "first," "second," and "third" to describe various elements, these elements are not limited by these terms. These terms are primarily used to distinguish one element from another. Furthermore, the term "or" used in this specification may include any one or more combinations of the associated listed items, depending on the actual situation.

[0024] Unless otherwise specified, terms used herein have the same meaning as commonly understood by those skilled in the art. Materials used in each embodiment are commercially available materials or materials produced by conventional techniques unless otherwise specified. Methods or operations used in each embodiment are common methods or operations in the art unless otherwise specified.

[0025] 1-3, 5-7, and 9-11, an embodiment of the present invention provides a radar-detectable golf ball Z, which includes a sphere 1 and a radar-detectable pattern layer 2. The radar-detectable pattern layer 2 is inseparably coupled to the sphere 1 and is for reflecting radar signal waves. It is noted that the radar-detectable pattern layer 2 includes a plurality of reflective patterns 21 with a designed shape and size, which can amplify radar echo signals. Therefore, the radar system can track the complete travel process of the golf ball and related hitting data, which can help improve a player's hitting performance.

[0026] In an embodiment of the present invention, the sphere 1 has a top surface 101, a bottom surface 102, and a middle annular surface 103 located between the top surface 101 and the bottom surface 102 and surrounding the center of the sphere, where the area where the top surface 101 is located may be the north polar region of the sphere 1, the area where the bottom surface 102 is located may be the south polar region of the sphere 1, and the area where the middle annular surface 103 is located may be the equatorial region of the sphere 1. The radar-detectable pattern layer 2 is formed on the middle annular surface 103, and a plurality of reflective patterns 21 are equally spaced on the middle annular surface 103, i.e., there is a blank area between two adjacent reflective patterns 21.

[0027] 4, 8, and 12, the positions of the multiple reflective patterns 21 on the intermediate annular surface 103 of the sphere 1 (after unfolding onto a plane) are shown. As shown in the drawings, the multiple reflective patterns 21 are equally spaced apart with a predetermined arc length D, which is within a range of 5 mm to 70 mm. The predetermined arc length D is, for example, the distance from the center of a given reflective pattern 21 (e.g., the intersection of the circular line CL and the symmetry axis S in FIGS. 4 and 8, or the symmetry center point in FIG. 12) to the center of another adjacent reflective pattern 21. The predetermined arc length D can be adjusted depending on the number of reflective patterns 21. For example, if the number of reflective patterns 21 is four, the predetermined arc length D is the total length of the circular line CL divided by four. It should be noted that although the drawings show four reflective patterns 21 equally spaced apart on the intermediate annular surface 103, the number of reflective patterns 21 can be increased or decreased as needed, for example, three or five or more reflective patterns 21 may be combined. Preferably, the number of reflection patterns 21 is four, and they are respectively located at 0 degree, 90 degree, 180 degree, and 270 degree positions on the intermediate annular surface 103. The above "0 degree, 90 degree, 180 degree, and 270 degree positions" means, for example, that when the center of one of the reflection patterns 21 is set to longitude 0 degree, the centers of the remaining reflection patterns 21 are respectively at longitude 90 degree, 180 degree, and 270 degree.

[0028] In some possible or preferred embodiments, the predetermined arc length D may be 5 mm, 10 mm, 15 mm, 20 mm, 25 mm, 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, 55 mm, 60 mm, 65 mm, or 70 mm.

[0029] 13 and 14 , an embodiment of the process for forming a radar-detectable pattern layer 2 on the intermediate annular surface 103 of the sphere 1 is shown. In practical application, the radar-detectable pattern layer 2 can be formed by pad-printing an ink composition. Specifically, the ink composition is first filled into the recesses 31 of the steel plate 3, and then transferred from the steel plate 3 using a transfer pad 4 to imprint the ink composition on the intermediate annular surface 103 of the sphere 1. The sphere 1 is then moved and rotated to different positions along the holding member 5, thereby forming a plurality of equally spaced reflective patterns 21 on the intermediate annular surface 103. It should be noted that the ink pad-printing process on the same position on the intermediate annular surface 103 can be repeated multiple times (e.g., two or three times) to improve the radar detection effect. However, the above example is merely one possible embodiment and is not intended to limit the present invention. For example, the radar-detectable pattern layer 2 can be formed by applying the ink composition to intaglio, relief, or screen printing, water transfer printing, thermal transfer printing, digital printing, painting, or spray coating.

[0030] The ink composition suitable for use in the present invention may be a UV-reactive ink and may be cured by irradiation with UV light having a wavelength of approximately 180 nm to 380 nm, but the present invention is not limited thereto. For example, the ink composition suitable for use in the present invention may be a heat-reactive ink. The ink composition may contain reflective particles having a particle diameter of 20 μm to 300 μm. The reflective particles may be one or a combination of organic pigments or dyes, inorganic pigments, mineral pigments, fluorescent pigments or dyes, metal or alloy pigments, copper-based pigments, aluminum-based pigments, glass pigments, ceramic pigments, pearlescent pigments, goniochromatic pigments, chameleon pigments, interference pigments, photochromic pigments, thermochromic pigments, infrared-reflective pigments, X-ray-reflective pigments, conductive pigments, luminous pigments, ultraviolet-fluorescent pigments or dyes, invisible pigments, anti-counterfeit pigments, glitter powders, and laser powders. However, the present invention is not limited to the examples listed above.

[0031] In some possible or preferred embodiments, the particle size of the reflective particles may be 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, 100 μm, 110 μm, 120 μm, 130 μm, 140 μm, 150 μm, 160 μm, 170 μm, 180 μm, 190 μm, 200 μm, 210 μm, 220 μm, 230 μm, 240 μm, 250 μm, 260 μm, 270 μm, 280 μm, 290 μm, or 300 μm.

[0032] In one possible or preferred embodiment, the reflective particles may be conductive particles, which may be carbon materials (e.g., graphene), silicon-containing conductive materials (e.g., silicon or silicon carbide), metals (e.g., silver, copper, gold, aluminum, tungsten, iron, platinum, lead, nickel, chromium, or alloys thereof), or any combination thereof. The conductive particles may be formed in a granular, fibrous, rod-like, flake-like, or hollow shape. This allows each reflective pattern 21 to have a shape of 10 -8 ohms-cm~10 10The ink composition may have a resistivity in the ohms-cm range. In this embodiment, the ink composition may include a binder (e.g., a polyester or alkyd resin, a polyurethane, a polyurea, a polyacrylic ester, a mixture of a polyol resin and an isocyanate, a mixture of an epoxy resin and an amino resin, or any combination thereof). However, the present invention is not limited to the examples given above.

[0033] Specific examples of the sphere 1 and radar-detectable pattern layer 2 of the present invention are described below, but the present invention is not limited to these examples. [Example]

[0034] [Example 1 of Sphere 1] 15 and 16, the sphere 1 includes a spherical core 11 and a spherical shell 12 that covers the outside of the spherical core 11, and the radar detectable pattern layer 2 is formed between the spherical core 11 and the spherical shell 12. If necessary, the sphere 1 may further include an intermediate layer 13 that is formed between the spherical core 11 and the spherical shell 12, and the radar detectable pattern layer 2 is formed on the intermediate layer 13 and is covered by the spherical shell 12. The materials of each component of the sphere 1 in Example 1 are not the focus of the present invention, but can be obtained or accomplished by a person skilled in the art based on the contents disclosed in this specification and their own technical common sense.

[0035] [Sphere 1 Example 2] 17, the sphere 1 includes, from the inside to the outside, a spherical core 11, an intermediate layer 13, a first adhesive layer 14, and a spherical shell 12. Specifically, the spherical shell 12 covers the outside of the spherical core 11, the intermediate layer 13 is formed between the spherical core 11 and the spherical shell 12, and the first adhesive layer 14 is formed between the intermediate layer 13 and the spherical shell 12. In this embodiment, the radar-detectable pattern layer 2 is formed on the intermediate layer 13 and is covered by the first adhesive layer 14. The materials of each component of the sphere 1 in Example 2 are not the focus of the present invention, but can be obtained or accomplished by a person skilled in the art based on the contents disclosed in this specification and their own technical common sense.

[0036] [Sphere 1 Example 3] 18, the sphere 1 includes, from the inside to the outside, a spherical core 11, an intermediate layer 13, a second adhesive layer 15, a first adhesive layer 14, and a spherical shell 12. Specifically, the spherical shell 12 covers the outside of the spherical core 11, the intermediate layer 13 is formed between the spherical core 11 and the spherical shell 12, the first adhesive layer 14 is formed between the intermediate layer 13 and the spherical shell 12, and the second adhesive layer 15 is formed between the intermediate layer 13 and the first adhesive layer 14. In this embodiment, the radar-detectable pattern layer 2 is formed on the second adhesive layer 15 and is covered by the first adhesive layer 14. The materials of each component of the sphere 1 in Example 3 are not the focus of the present invention, but can be obtained or accomplished by a person skilled in the art based on the contents disclosed in this specification and their own technical common sense.

[0037] [Sphere 1 Example 4] As shown in FIG. 19 , the sphere 1 includes, from the inside to the outside, a spherical core 11, an intermediate layer 13, an adhesive layer 14′, a spherical shell 12, one or more primer layers 16 (e.g., white primer layers), and a finish coating layer 17 (e.g., a transparent finish coating layer). Specifically, the spherical shell 12 covers the outside of the spherical core 11, the intermediate layer 13 is formed between the spherical core 11 and the spherical shell 12, the adhesive layer 14′ is formed between the intermediate layer 13 and the spherical shell 12, the primer layer 16 is disposed so as to surround the spherical shell 12, and the finish coating layer 17 covers the primer layer 16. In this embodiment, the radar-detectable pattern layer 2 is formed on the spherical shell 12 and is covered by the primer layer 16. The materials of each component of the sphere 1 in Example 4 are not the focus of the present invention and can be obtained or accomplished by those skilled in the art based on the contents disclosed herein and their own technical knowledge.

[0038] [Sphere 1 Example 5] As shown in FIG. 20 , the sphere 1 includes, from the inside to the outside, a spherical core 11, an intermediate layer 13, an adhesive layer 14′, a spherical shell 12, one or more primer layers 16 (e.g., white primer layers), and a finish coating layer 17 (e.g., a transparent finish coating layer). Specifically, the spherical shell 12 covers the outside of the spherical core 11, the intermediate layer 13 is formed between the spherical core 11 and the spherical shell 12, the adhesive layer 14′ is formed between the intermediate layer 13 and the spherical shell 12, the primer layer 16 is disposed so as to surround the spherical shell 12, and the finish coating layer 17 covers the primer layer 16. In this embodiment, the radar-detectable pattern layer 2 is formed on the primer layer 16 and is covered by the finish coating layer 17. The materials of each component of the sphere 1 in Example 5 are not the focus of the present invention and can be obtained or accomplished by those skilled in the art based on the contents disclosed herein and their own technical common sense.

[0039] [Example 1 of Radar-Detectable Pattern Layer] 2 and 4, when a circular line CL is defined for a sphere 1 with its center at the center of the sphere, the radius of the circular line CL is equal to the radius of the sphere 1. Each reflection pattern 21 of the radar-detectable pattern layer 2 includes two reflection pattern units 21P arranged symmetrically with respect to the circular line CL, and each reflection pattern unit 21P includes two pattern subunits 210 arranged symmetrically with respect to a symmetry axis S, which is perpendicular to the circular line CL. Each pattern subunit 210 includes a first strip-shaped pattern 211 and a second strip-shaped pattern 212 connected to each other, the first strip-shaped pattern 211 being parallel to the circular line CL, and the second strip-shaped pattern 212 being located between the first strip-shaped pattern 211 and the circular line CL and forming an angle θ with the first strip-shaped pattern 211, the angle θ being 1 to 120 degrees. Furthermore, the second strip-shaped pattern 212 is closer to the axis of symmetry S than the first strip-shaped pattern 211 .

[0040] In the first embodiment, the height and width of each of the reflection patterns 21 may be independently within the range of 5 mm to 70 mm.

[0041] [Radar-detectable pattern layer example 2] 6 and 8, when a sphere 1 defines a circular line CL with its center at the center of the sphere, the radius of the circular line CL is equal to the radius of the sphere 1. Each reflective pattern 21 of the radar detectable pattern layer 2 includes two reflective pattern units 21P and a connecting unit 21C. The two reflective pattern units 21P are located on opposite sides of the circular line CL and are installed symmetrically with respect to the circular line CL. The position of the connecting unit 21C corresponds to the circular line CL and is designed to connect the two reflective pattern units 21P.

[0042] Specifically, the connecting unit 21C is a connecting strip-shaped pattern. Each reflective pattern unit 21P includes two pattern subunits 210 arranged symmetrically with respect to a symmetry axis S, which is perpendicular to a circular line CL. Each pattern subunit 210 includes a first strip-shaped pattern 211 and a second strip-shaped pattern 212 that are connected to each other. The first strip-shaped pattern 211 is parallel to the circular line CL (connecting strip-shaped pattern). The second strip-shaped pattern 212 extends from the connecting strip-shaped pattern to the first strip-shaped pattern 211. The second strip-shaped pattern 212 and the first strip-shaped pattern 211 form an angle θ, which is 1 to 120 degrees. The second strip-shaped pattern 212 is closer to the symmetry axis S than the first strip-shaped pattern 211.

[0043] In the second embodiment, the height and width of each of the reflection patterns 21 may be independently within the range of 5 mm to 70 mm.

[0044] [Radar-detectable pattern layer example 3] 10 and 12, when the sphere 1 defines a circular line CL whose center is the center of the sphere, the radius of the circular line CL is equal to the radius of the sphere 1. Each reflection pattern 21 of the radar-detectable pattern layer 2 is an S-shaped pattern, and its position corresponds to the circular line CL.

[0045] In the third embodiment, the height and width of each of the reflection patterns 21 may be independently within the range of 5 mm to 70 mm.

[0046] [Advantageous Effects of the Embodiments] The radar-detectable golf ball provided by the present invention has a radar-detectable pattern layer formed on the middle annular surface of a sphere and includes a plurality of reflective patterns equally spaced at predetermined arc lengths (within a range of 5 mm to 70 mm). This allows the ball to be detected and tracked by a radar system in distance-limited environments (e.g., indoor driving ranges), providing golfers with accurate and reliable hitting performance data.

[0047] The above disclosure is merely a preferred embodiment of the present invention, and the scope of the claims of the present invention is not limited thereto. Therefore, any equivalent technical modifications made using the specification and drawings of the present invention are included in the scope of the claims of the present invention. [Explanation of symbols]

[0048] Z…Radar detectable golf ball 1...Sphere 101...Top surface 102...Bottom 103...Intermediate annular surface 11...Spherical nucleus 12...Spherical shell 13...Middle class 14...First adhesive layer 14'...Adhesive layer 15...Second adhesive layer 16...Primer layer 17...Finishing paint layer 2...Radar detectable pattern layer 21...Reflective pattern 21P...Reflective pattern unit 21C...Connecting unit 210...Pattern subunit 211...First strip pattern 212...Second strip pattern 3...Steel plate 31...recess 4...Transfer pad 5...Retaining member CL...Circular line S...Axis of symmetry θ…Angle

Claims

1. a sphere having an intermediate toroidal surface surrounding the center of the sphere; and a radar-detectable pattern layer formed on the intermediate annular surface; The radar-detectable golf ball, wherein the radar-detectable pattern layer includes a plurality of reflective patterns equally spaced apart over a predetermined arc length, the predetermined arc length being within a range of 5 mm to 70 mm.

2. The radar-detectable golf ball of claim 1 , wherein the number of the reflective patterns is three or more.

3. 3. The radar-detectable golf ball of claim 2, wherein the number of the reflective patterns is four, and the reflective patterns are located at 0 degrees, 90 degrees, 180 degrees, and 270 degrees of the intermediate annular surface, respectively.

4. 2. The radar-detectable golf ball of claim 1, wherein the sphere defines a circular line with its center at the center of the sphere, and each of the reflective patterns includes two reflective pattern units arranged symmetrically with respect to the circular line.

5. 5. The radar-detectable golf ball of claim 4, wherein each of the reflective pattern units includes two pattern subunits arranged symmetrically with respect to an axis of symmetry, the axis of symmetry being perpendicular to the circular line, and each of the pattern subunits includes a first strip-shaped pattern and a second strip-shaped pattern connected to each other, the first strip-shaped pattern being parallel to the circular line, the second strip-shaped pattern being located between the first strip-shaped pattern and the circular line and forming an angle with the first strip-shaped pattern, the angle being between 1 degree and 120 degrees, and the second strip-shaped pattern being closer to the axis of symmetry than the first strip-shaped pattern.

6. 2. The radar-detectable golf ball of claim 1, wherein the sphere defines a circular line with its center at the center of the sphere, and each of the reflection patterns is an S-shaped pattern whose position corresponds to the circular line.

7. 7. The radar-detectable golf ball according to claim 1, wherein the sphere includes a spherical core and a spherical shell that covers the outside of the spherical core, and the radar-detectable pattern layer is formed between the spherical core and the spherical shell or is formed on the spherical shell.

8. 8. The radar-detectable golf ball of claim 7, wherein the sphere includes an intermediate layer formed between the core and the shell, and the radar-detectable pattern layer is formed on the intermediate layer and covered by the shell.

9. 9. The radar-detectable golf ball of claim 8, wherein the sphere includes a first adhesive layer formed between the intermediate layer and the spherical shell, and the radar-detectable pattern layer is covered by the first adhesive layer.

10. 10. The radar-detectable golf ball of claim 9, wherein the sphere includes a second adhesive layer formed between the intermediate layer and the first adhesive layer, and the radar-detectable pattern layer is formed on the second adhesive layer and covered by the first adhesive layer.

11. 8. The radar-detectable golf ball of claim 7, wherein the sphere includes an intermediate layer disposed so as to surround the spherical core, an adhesive layer formed between the intermediate layer and the spherical shell, and a finish paint layer covering the outside of the spherical shell, and the radar-detectable pattern layer is formed on the spherical shell and is covered by the finish paint layer.

12. 12. The radar-detectable golf ball of claim 11, wherein the sphere includes at least one primer layer formed between the shell and the finish paint layer, and the radar-detectable pattern layer is formed on the primer layer.

13. 2. The radar-detectable golf ball of claim 1, wherein the radar-detectable pattern layer is formed from an ink composition, and the ink composition includes reflective particles having a particle size of 20 μm to 300 μm.

14. 2. The radar-detectable golf ball of claim 1, wherein the height and width of each of the reflective patterns are each independently within the range of 5 mm to 70 mm.

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