Infrared LED (light-emitting diodes) operate like any other LED but use different materials to produce a different spectrum of light. IR LEDs emit wavelengths at the top end of the electromagnetic radiation spectrum beyond the visible. But unlike LEDs that emit wavelengths and colours within the visible spectrum, IR LEDs are not used to provide illumination in the same way. IR LEDs can have many interesting applications, which will be explored below.
2025/12/02 admin