A magneto-optical head includes a slider, an objective lens, a coil and a transparent insulating layer. A recording control unit controls the operation of an image recording unit on the basis of the event signal, thereby automatically forming, as a unit, and recording moving image information based on a unified standard. The invention also relates to a method of preparing a light transmitting filter comprising the step of laminating a clear substantially uniform conformable layer over transparent microspheres embedded in a light absorbing layer wherein the transparent bead form light tunnels through the light absorbing layer. The low-loss filter circuit is connected on its input to the source connection of the field effect transistor. One or more control signals are generated based on the motion values. The silicon dioxide layer is then removed prior to forming transistors using the germanium-rich silicon.