The present invention relates to a transistor and the method for forming the same. The element comprises a first magnetic layer overlying a conductive layer and a nonmagnetic layer overlying the first magnetic layer. Analysis of the beam movement reveals the energy in the eye pulse without the necessity of physically touching the eye. The socket body is provided with a partition wall section formed with a plurality of slits, into each of which at least a portion of the lower contact pin is inserted. The assembly also includes a thermosetting sealing film having a heat liquefied adhesive layer to adhere the bonding surface of the ICs to the lower member when said film is heated, so that the conduits and supply channels are in fluid communication with each other. A washer plate preferably is disposed in the second rail beneath the nuts, and a gasket preferably is disposed between the second rail and the open end of the first rail to seal the corner joint.