Lens edger

Details Lens edger Lens edger

2007-04-03

2007-04-03

Hail, III, Joseph J. (Department: 3723)

Abrading

Precision device or process - or with condition responsive...

With indicating

C451S028000, C451S042000, C451S043000, C451S044000, C451S365000, C451S384000, C451S240000, C451S255000, C451S256000, C451S277000

Reexamination Certificate

active

11413040

ABSTRACT:
A lens edger which is capable of measuring the curvature of an eyeglass lens is disclosed. The lens edger includes a carriage which rotatably fixes a pair of lens fixing shafts and moves the position of the lens fixing shafts clamping a lens to be processed; a lens rotation motor for rotating the lens fixing shafts; a carriage driving means for moving the carriage; and an apparatus for measuring a curvature of the lens. The apparatus for measuring lens curvature includes a curvature tracer which contacts with a side of the lens and detects a curvature of the lens by moving horizontally according to the curvature of the lens during a rotation of the lens; a curvature tracer rotator which rotates the curvature tracer to a position for measuring the lens curvature, and to which one end of the curvature tracer is inserted in a manner of allowing sliding movement of the curvature tracer in a horizontal direction; and a slider base which guides the movement of the curvature tracer in the horizontal direction, and provides a restoring force to the curvature tracer so that the lens and the curvature tracer can be maintained in a contacted state.

REFERENCES:
patent: 4596091 (1986-06-01), Daboudet et al.
patent: 4737053 (1988-04-01), Paolini
patent: 6618952 (2003-09-01), Andrews et al.

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