A magnetoresistive read head based on the spin accumulation effect has no electrical terminal and associated insulating layer in the read gap. The lens is curved in orientation, which aids in reducing eyelash contact while increasing a peripheral field of view for a wearer of the curved eyewear. A first downconverter receives the RF input signal and converts the frequency band of the signal into the IF band to output an IF input signal. Preferably, the Fresnel lens sheet 11 has a haze value in a specified range. In addition at least one miniature clock buffer is located within the system, wherein the at least one miniaturized clock buffer is a scaled version of the clock buffer having a scaling factor of K, the scaling factor representing a number of miniature clock buffers utilized to minimize negative variations experienced by the clock buffer. The first rotating roller, is at least partly immersed in a tank of glue, with at least one portion of a generatrix of the first roller coming into contact with the core fed by the conveyor, and the second roller is positioned opposite the first roller and interacts with the core so that the core is fed through without unintended rotation and the glue is applied in a controlled fashion.