An approach is provided for semiconductor devices including an anti-fuse structure. Said lens arrangement is tilted relative to the optical axis and arranged eccentrically in order to change the cross-sectional area of the laser beam, particularly from an elliptical to a circular geometry, and at the same time to compensate an inclination angle of the laser beam passing through the lens arrangement in relation to the optical axis. The first body includes a first circuit and a first association structure. The button holder and the button interpose the operation panel inbetween thereby to prevent an illuminating light leakage. Further, the invention relates to a method for upgrading a wind turbine.