The invention discloses a lens component, which comprises a lens, a black support seat and a vacuum electroplated coating, wherein the outside surfaces of the transparent face of the lens has the vacuum electroplated coating; the black support seat is a hollow cylinder; both the shape and height of the black support seat are matched with those with the lens; the lens is fixed in the black support seat; and the end, far away from the electroplated coating, of the lens has a vent hole. Compared with the traditional lens component, the lens component of the invention has the advantages of saving production cost, making a packaging process focusing-free and simple, along with simplicity and easy implementation.