Patent ID: 7937826

Claim:
A cup attaching apparatus for attaching a cup to an eyeglass lens, comprising: a lens mount on which the lens is to be mounted; at least three support pins provided on the lens mount to support the lens when a rear refractive surface of the lens is brought in contact with the support pins; a first moving mechanism adapted to simultaneously move the support pins to change a distance of each support pin from a central axis for attachment of the cup; a lens clamp for clamping the lens in cooperation with the lens mount when the lens is mounted on the lens mount; at least three presser pins provided on the lens clamp to clamp the lens when a front refractive surface of the lens is brought in contact with the presser pins; a second moving mechanism adapted to simultaneously move the presser pins to change the distance of each presser pin from the attachment central axis; and a mode selector for selecting between a first mode of attaching the cup to an unprocessed lens and a second mode of attaching the cup to a processed lens; wherein, when the second mode is selected, the first and second moving mechanisms cause each support pin and each presser pin to move so that the distance of each support pin and each presser pin from the attachment central axis is shorter than that in the first mode.