| 摘要 |
PROBLEM TO BE SOLVED: To provide a cup for fixing a lens capable of saving re-blocking labors when switching from a large-diameter cup to a small-diameter cup, and precisely processing a peripheral edge of the lens. SOLUTION: This cup for fixing a lens has a base part 644 mounted to a cup holder carried by a lens chuck shaft of an eyeglass-rim-forming machine, and is fixed to a surface of the lens. The cup comprises a small-diameter cup 640 spread around a lens fixing side of the base part, and on which a small-diameter collar part 642 is formed, and a supporter member having an opening for inserting the base part, having a diameter larger than the collar part, and covered on the smaller-diameter cup through the opening. When the supporter member is covered on the small-diameter cup and integrated, it is used as a large-diameter cup. When the supporter member is removed, the small-diameter cup is used alone. COPYRIGHT: (C)2009,JPO&INPIT |
