Infrared emission tube (IR LED), also known as infrared emission diode, belongs to LED diode class.It is a light-emitting device that can directly convert electrical energy into near-infrared light (invisible light) and radiate it.Mainly used in various photoelectric switch, touch screen and remote control transmitting circuit.The structure and principle of infrared emitters are similar to those of ordinary light-emitting diodes, but the semiconductor chip material is different.Infrared light-emitting diodes usually use materials such as gallium arsenide (GaAs), gallium aluminide (GaAlAs) and are packaged in fully transparent or light blue, black optical grade resin.package.

The infrared transmitter generates infrared light and transmits information and commands from one device to another. Usually, one device receives the signal and then transmits the infrared (IR) signal to another device through the transmitter.