The invention relates to a floor element which is light-weight and easily transported, easily removed and therefore usable several times, is pleasant to walk on and can be used together with a floor heating system. LED elements can be quickly and easily replaced if an LED element is defective or burns out. The integrated circuit further includes an isolation matrix structure, underlying the passive element, wherein the isolation matrix structure includes a plurality of trench regions each being formed through the dielectric layer and extending into the semiconductor substrate, the plurality of trench regions further including an insulating material and a void area. Provided are compositions comprising enzymes or microorganisms having induced andor stabilized activity. The support members are disposed along the inner peripheral wall of the lens barrel and support part of the spherical surface of the spherical bodies.