Patent ID: 6695487
Filing Date: 2004-02-24
Classification: G02B

Abstract:
A conversion adapter to be used for connecting opposed optical connector ferrules having different diameters, comprising a large diameter part and a small diameter part integrally formed with the large diameter part, said adapter being formed of a substantially amorphous alloy having a composition represented by either one of the following general formulas (1) to (6):M1aM2bLncM3dM4eM5fâ€ƒâ€ƒ(1) wherein M1 represents either or both of the two elements, Zr and Hf; M2 represents at least one element selected from the group consisting of Ni, Cu, Fe, Co, Mn, Nb, Ti, V, Cr, Zn, Al, and Ga; Ln represents at least one element selected from the group consisting of Y, La, Ce, Nd, Sm, Gd, Tb, Dy, Ho, Yb, and Mm (misch metal: aggregate of rare earth elements); M3 represents at least one element selected from the group consisting of Be, B, C, N, and O; M4 represents at least one element selected from the group consisting of Ta, W, and Mo; M5 represents at least one element selected from the group consisting of Au, Pt, Pd, and Ag; and a, b, c, d, e, and f represent such atomic percentages as respectively satisfy 25&lE;a&lE;85, 15&lE;b&lE;75, 0&lE;c&lE;30, 0&lE;d&lE;30, 0&lE;e&lE;15, and 0&lE;f&lE;15, A1100âˆ’gâˆ’hâˆ’iLngM6hM3iâ€ƒâ€ƒ(2) wherein Ln represents at least one element selected from the group consisting of Y, La, Ce, Nd, Sm, Gd, Tb, Dy, Ho, Yb, and Mm; M6 represents at least one element selected from the group consisting of Ti, V, Cr, Mn, Fe, Go, Ni, Cu, Zr, Nb, Mo, Hf, Ta, and W; M3 represents at least one element selected from the group consisting of Be, B, C, N, and O; and g, h, and i represent such atomic percentages as respectively satisfy 30&lE;g&lE;90, 0&lE;h&lE;55, and 0&lE;i&lE;10, Mg100âˆ’pM7pâ€ƒâ€ƒ(3) wherein M7 represents at least one element selected from the group consisting of Cu, Ni, Sn, and Zn; and p represents an atomic percentage falling in the range of 5&lE;p&lE;60, Mg100âˆ’qâˆ’rM7M8râ€ƒâ€ƒ(4) wherein M7 represents at least one element selected from the group consisting of Cu, Ni, Sn, and Zn; M8 represents at least one element selected from the group consisting of Al, Si, and Ca; and q and r represent such atomic percentages as respectively satisfy 1&lE;q&lE;35 and &lE;1&lE;r&lE;25, Mg100âˆ’qâˆ’sM7qM9sâ€ƒâ€ƒ(5) wherein M7 represents at least one element selected from the group consisting of Cu, Ni, Sn, and Zn; M9 represents at least one element selected from the group consisting of Y, La, Ce, Nd, Sm, and Mm; and q and s represent such atomic percentages as respectively satisfy 1&lE;q&lE;35 and 3&lE;s&lE;25, and â€ƒMg100âˆ’qâˆ’râˆ’sM7qM8rM9sâ€ƒâ€ƒ(6)wherein M7 represents at least one element selected from the group consisting of Cu, Ni, Sn, and Zn; M8 represents at least one element selected from the group consisting of Al, Si, and Ca; M9 represents at least one element selected from the group consisting of Y, La, Ce, Nd, Sm, and Mm; and q, r, and s represent such atomic percentages as respectively satisfy 1&lE;q&lE;35, 1&lE;r&lE;25, and 3&lE;s&lE;25.