Various aspects of the disclosure provide thermal interface materials having high thermal conductivities. According to the invention, the current through the inductor is measured by means of a measuring winding and an integrator having the function of an RC network. The two light fluxes L10 and L20 emitted from the phase plate 1c are each spatially divided into two by a second birefringent plate 1d along a second direction extending perpendicular to the first direction to achieve four separate rays L12, L12, L21 and L22, to be guided to an imaging plane 15a of an imaging device 15. The shiftable memory further includes an array-merging operator to produce the merged array using the built-in shifting capability. The combination of anesthesia gas and oxygen is supplied to one or more multiple outlets.