| 摘要 |
PROBLEM TO BE SOLVED: To provide a golf ball which can improve an aesthetic appearance by making a joint line appearing in a part where two hemispherical bodies are joined to each other less noticeable.SOLUTION: A golf ball 100 is configured by arranging a transparent resin cover layer 120 on the outside of a joined transparent resin spherical body 110. The joined spherical body 110 is configured by joining two hemispherical bodies 111 to each other. Each of the two hemispherical bodies 111 is formed into a hemispherical shape with a recessed inner surface part 114. In the inner surface part 114, an annular reflective surface 116 is formed in parallel with a joined part J of the two hemispherical bodies 111. The annular reflective surface 116 comprises a plurality of first curved surface parts 116a comprising a curved surface projecting inward and a second curved surface part 116b formed between the first curved surface parts 116a. A plurality of the annular reflective surfaces are formed in such a manner that inner diameters are gradually reduced from a side of a joining part 113 in the inner surface part 114 to a side of a deepest part 114a.SELECTED DRAWING: Figure 1 |
