| 摘要 |
PROBLEM TO BE SOLVED: To provide rimless spectacles such that lenses are prevented from coming loose by screwing both the lenses directly to retainer pieces provided on both the sides of a connection member without providing any rim and also screwing wraparound endpieces outside the lenses. SOLUTION: When a lens 1 is fixed with a screw, a nearly dome type washer 13 is used and fine projections 17 are formed on the surface 16 of the dome type washer 13 to prevent the screw from being loose. COPYRIGHT: (C)2004,JPO&NCIPI
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