The present invention, a mirror that reflects light, a gimbal (gimbal) connected to the mirror and rotatably supporting the mirror, and installed in the mirror or the gimbal, and when a current flows, interacts with a magnetic field formed around the electromagnetic force It includes a winding portion for adjusting the rotation angle of the mirror to generate, the winding portion, a silicon layer (silicon layer), the silicon layer, the coil layer (coil layer) that is physically deformed by the flowing current, And a plurality of hollow holes formed on the coil layer to provide elasticity to reduce the amount of impact due to the physical deformation and to expand the heat dissipation area.
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