A process for automatic matching of raw lenses (6), produced in accordance with order data, to a predetermined spectacle frame and for machining the edges to produce an accurate fit, by means of at least one CNC-controlled spectacle lens edge-machining machine (1), which has an input interface, having the following steps:
- 1.1 the PD values for the left and right eyes are entered into a computer in accordance with the order data,
- 1.2 the center height for the left and right eyes is entered in the computer in accordance with the order data,
- 1.3 the optical values of the left and right eyes are entered in the computer in accordance with the order data and, if provided, the position of a reading section or of an intermediate corridor is entered in the computer,
- 1.4 the raw lens diameter and the position of the optical center point and/or the raw lens dimensions are entered in the computer if the raw lenses (6) are not round, and the position of the optical center point is entered in the computer with reference to the geometric center point for raw lenses (6) which have been decentered in advance, are circular or are not circular,
- 1.5 the shape data of the frame edges of the predetermined spectacle frame is entered in the computer,
- 1.6 the shape data of the left and right spectacle lens openings and of the left and right raw lenses (6), which have been aligned in accordance with the PD values, the centering height of their respective optical center point, the axis position of a cylindrical component and/or the base position of a prismatic component of the optical effect, and, if given, with respect to the position of a reading section or of an intermediate corridor, is superimposed by calculation by the computer,
- 1.7 the computer checks by calculation whether the size of the raw lenses (6) is adequate for edge machining to match the predetermined spectacle frame,
- 1.8 if necessary, the raw lens (6) which is too small is moved by calculation with respect to the shape data of the respective frame edge until the shape data of the relevant frame edge is completely within the raw lens,
- 1.9 the computer checks by calculation whether the movement that has been carried out is within the predetermined tolerances, which are dependent on the prismatic effect as well as the optical center point taking into account the axis position of the main cuts of a cylindrical and/or prismatic component, and, if this is not the case, the pair of raw lenses (6) are rejected or, if this is the case:
- 1.10 the computer checks by calculation whether the movement that has been carried out of one raw lens (6) requires corresponding movement in the same sense of the other raw lens (6) in order to comply with the predetermined tolerances with respect to the vertical fusion width and the fusional divergence and convergence capability, and, if this is the case,
- 1.11 the computer calculates the minimum required movement and checks by calculation whether the movement that has been carried out is within the predetermined tolerances, which are dependent on the prismatic effect as well as the optical center point, taking into account the axis position of the main cuts of a cylindrical and/or prismatic component and, if this is not the case, the pair of raw lenses (6) are rejected or, if this is the case,
- 1.12 the spectacle lens-machining machine or machines (1) is or are driven by the computer in order to machine the shape of the pair of spectacle lenses (7) in accordance with the determined values.