12. An electromagnetic radiation assembly for a rearview device comprising:a circuit board including a grounded heat sink extending over the circuit board;
a thermal pad disposed between the circuit board and the grounded heat sink; and
an electromagnetic shield disposed about a periphery of the circuit board, the electromagnetic shield comprising:
a first component having a plurality of spring tabs extending away from the circuit board, wherein the spring tabs engage the grounded heat sink; and
a second component slidingly received within the first component and having a bridge extending across a midportion of the second component.