Illumination device with hollow post and reflective cup with two serially disposed lens disposed therein

An illumination device, comprising:

• a printed circuit board;
• a plurality of LED light sources mounted on the printed circuit board, and the plurality of LED light sources being electrically connected to the printed circuit board;
• a hollow supporting post covering the plurality of LED light sources, and the supporting post being connected to the printed circuit board;
• a funnel-shaped reflective cup located above the supporting post;
• a first lens received in a bottom portion of the reflective cup, and the first lens being connected to a top portion of the supporting post;
• and
• a second lens located at a top portion of the reflective cup opposite to the first lens;
• wherein the first lens is a Fresnel lens, the second lens comprises an upper surface facing to the first lens and a lower surface opposite to the upper surface, a middle of the upper surface of the second lens is concaved downwardly to define a first groove, and a periphery of the upper surface of the second lens is concaved downwardly to define a plurality of second grooves surrounding the first groove.