Code (ring) with two pairs of periodic line patterns

A method for optical measuring data acquisition of a component that moves in a rotatory or translatory manner, comprising the following steps:

• generation of a first pair of periodic line patterns (2a, 2b) extending in the movement direction of the component and each having n periods over the movement range of the moving component, wherein the line patterns are disposed in a fixed phase relationship to one another in the movement direction of the component (2a, 2b),
• generation of a second pair of periodic line patterns (2c, 2d) extending in the movement direction of the component, which each have m periods, over the movement range of the moving component, wherein the line patterns are disposed in a fixed phase relationship to one another in the movement direction of the component (2c, 2d),
• determination of respective periodicities and phases (P1, P2;
• F1, F2) of the line patterns of the first pair (2a, 2b),
• determination of respective periodicities and phases (P3, P4;
• F3, F4) of the line patterns of the second pair (2c, 2d) in relation to a reference value perpendicular to the movement direction of the component,
• determination of the phase position (PH1) of the first pair of line patterns (2a, 2b) (on the basis of the periodicities and phases (P1, P2;
• F1, F2),
• determination of the phase position (PH2) of the second pair of line patterns on the basis of the periodicities and phases (P3, P4;
• F3, F4), and
• determination of the position of the component on the basis of the phase positions (PH1, PH2).