Patent ID: 8916895

Claim:
An infrared light-emitting diode, characterized in that it comprises: only one core for emitting infrared light; a packaging body outside the core, the packaging body at least comprising a first surface and a second surface, the first surface being convex and in front of the core, and the second surface being plane and on one side of the core; and leads connected to the core and extending to outside of the packaging body; wherein the infrared light emitted by the core forms at least two beams of infrared light in different directions after being emitted from the packaging body at least through the first surface and the second surface, characterized in that the packaging body further has a third surface that is plane, wherein the third surface and the second surface are located on two sides of the core respectively; the packaging body further has a fourth surface that is located between the first surface and the second surface or the third surface, wherein the infrared light incident on and fully-reflected at the second surface or the third surface is emitted from the packaging body after being refracted by the fourth surface.