Patent ID: 7437809

Claim:
An eyeglass lens processing apparatus comprising: a lens holding unit that holds and rotates an eyeglass lens; a piercing tool for forming a hole in the lens, the hole including a non-through hole for attaching a rimless frame to be formed on a refractive surface of the lens; an inclining unit that relatively inclines the piercing tool with respect to the lens held by the lens holding unit; a movement unit that relatively moves the piercing tool in a direction of a rotating axis with respect to the lens held by the lens holding unit; an axis-to-axis changing unit that two-dimensionally moves a hole forming position with respect to the lens by changing a distance between a rotating axis of the lens and the rotating axis of the piercing tool in combination with rotating the lens; a first input unit that inputs target lens shape data of an eyeglass frame and layout data of the lens relative to the frame by communication or an input key; a second input unit that inputs two-dimensional position data, direction data and depth data of the non-through holed by communication or an input key; a detecting unit that includes a sensor for detecting a movement position of a shaft that is brought into contact with a front end of the piercing tool and detects a position of the front end of the piercing tool in the direction of the rotating axis; a storing unit that stores position data of the front end of the piercing tool; an operation unit that corrects the front-end position data stored in the storing unit in advance, based on an output of the detecting unit, and obtains hole forming data based on the corrected front-end position data and each input data input by the first and second input units; and a control unit that controls a process of forming the non-through hole based on the obtained hole forming data.