Patent ID: 8007344

Claim:
An eyeglass lens processing apparatus for processing a peripheral edge of an eyeglass lens, the apparatus comprising: a lens chuck shaft; a lens chuck shaft rotating unit that rotates the lens chuck shaft; an edge position measuring unit that includes a feeler that is brought into contact with a refractive surface of the lens and a detector that detects a moving position of the feeler in an axial direction of the lens chuck shaft to measure an edge position of the lens; a moving unit that relatively moves the feeler to approach toward and retreat from the lens chuck shaft; and a speed controller that calculates a movement position of the feeler in a moving radial direction corresponding to each rotating angle of the lens chuck shaft based on target lens shape data, calculates a rotating speed of the lens chuck shaft rotating unit based on a change of the calculated movement position of the feeler with respect to a change of the rotating angle of the lens chuck shaft, and controls the lens chuck shaft rotating unit based on the calculated rotating speed and controls the moving unit based on the calculated movement position during the measurement of the edge position of the lens, wherein the calculated rotating speed at an area where the change of the movement position of the feeler with respect to the change of the rotating angle of the lens chuck shaft is small is higher than the calculated rotating speed at an area where the change of the movement position of the feeler with respect to the change of the rotating angle of the lens chuck shaft is large.