An Ultraviolet Light Emitting Diode (UV LED) is a type of light-emitting diode capable of emitting ultraviolet light. Ultraviolet light is a form of electromagnetic radiation with wavelengths shorter than visible light and is typically divided into different wavelength regions, including Ultraviolet A (UVA), Ultraviolet B (UVB), and Ultraviolet C (UVC).

UV LEDs are often categorized based on the wavelength region of ultraviolet light they emit:

    UVA UV LEDs: Emit ultraviolet light with wavelengths roughly between 315 to 400 nanometers. They are commonly used in industrial applications such as UV curing and sensing and detection.

    UVB UV LEDs: Emit ultraviolet light with wavelengths roughly between 280 to 315 nanometers. They find applications in medical and biomedical fields, including treating skin disorders and medical irradiation.

    UVC UV LEDs: Emit ultraviolet light with wavelengths roughly between 100 to 280 nanometers. They possess strong disinfection and germicidal capabilities and are widely used in water treatment, air purification, medical equipment, and food processing.

UV LEDs have a wide range of applications including industrial, medical, scientific research, security detection, and commercial sectors. They can replace traditional UV lamps with advantages such as smaller size, higher energy efficiency, longer lifespan, and adjustable ultraviolet output.