Eyeglass lens processing apparatus
AssigneeNidek Co., Ltd.
InventorRyoji Shibata
Life of this patent
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Abstract
An eyeglass lens processing apparatus for processing a lens to fit the lens into a rim, includes: an edge measurement portion that measures a path of an edge position of the chucked lens based on a 2-D outline shape is a projection shape of the rum in its warp direction and a layout of the optical center of the chucked lens; and an arithmetic operation portion that obtains an inclination angle of the edge path or a temporary bevel path obtained based on the edge path with respect to a center axis, obtains a corrected 2-D outline shape which is a projection shape onto a plane perpendicular to the center axis based on the inclination angle and the 2-D outline shape, and obtains a final bevel path to form a bevel in the periphery of the lens chucked at the optical center based on the corrected 2-D outline shape.
Claims7
An eyeglass lens processing apparatus for processing a periphery of an eyeglass lens to fit the eyeglass lens into a rim of an eyeglass frame, comprising:
- a chuck shaft that chucks and holds the lens;
- an input portion that inputs a 2-D outline shape which is a projection shape of the rim in its warp direction and a layout of an optical center of the lens with respect to the 2-D outline shape;
- an edge measurement portion that measures a path of an edge position of the lens chucked and held by the chuck shaft based on the input 2-D outline shape and the input layout of the optical center;
- and
- an arithmetic operation portion that obtains an inclination angle of the measured edge path or a temporary bevel path obtained based on the measured edge path with respect to a center axis of the chuck shaft, obtains a corrected 2-D outline shape which is a projection shape onto a plane perpendicular to the center axis of the chuck shaft based on the obtained inclination angle and the input 2-D outline shape, and obtains a final bevel path to form a bevel in the periphery of the lens chucked and held by the chuck shaft at the optical center based on the obtained corrected 2-D outline shape.
An eyeglass lens processing apparatus for processing a periphery of an eyeglass lens to fit the lens into a rim of an eyeglass frame, comprising:
- a chuck shaft that chucks and holds the lens;
- an input portion that inputs a 2-D outline shape which is a projection shape of the rim in a predetermined direction and a layout of an optical center of the lens with respect to the 2-D outline shape;
- an edge measurement portion that measures a path of an edge position of the lens chucked and held by the chuck shaft based on the input 2-D outline shape and the layout of the optical center;
- and
- an arithmetic operation portion that obtains an inclination angle of a projection direction of the 2-D outline shape with respect to a center axis of the chuck shaft based on the measured edge path, obtains a corrected 2-D outline shape which is a projection shape onto a plane perpendicular to the center axis of the chuck shaft based on the 2-D outline shape arranged in a direction of the obtained inclination angle, and obtains a bevel path to form a bevel in the periphery of the lens chucked and held by the chuck shaft at the optical center based on the obtained corrected 2-D outline shape.
Dependencies are inferred from the claim text.