What is the Wavelength Range of the UV LED Module

UV LED modules have changed a number of sectors by offering flexible and energy-efficient ultraviolet application options. When compared to conventional UV lamps, these small light sources have a smaller carbon footprint, a longer lifetime, and less power use. The wavelength range of UV LED modules is an important factor since it affects how well they work in certain applications. In this article, we examine the UV LED modules’ wide variety of wavelengths and many uses.

The Fundamentals of UV LED Wavelengths

The electromagnetic spectrum includes UV light, which has longer wavelengths than X-rays but shorter wavelengths than visible light. UV radiation generally has a wavelength between 100 and 400 nanometers (nm). In this UV range, UV LED modules generate light that may be further split into three categories:

UVA (315 nm to 400 nm)

Long-wave UV light, or UVA, has wavelengths between 315 and 400 nm. Since it is closest to visible light, this region of the spectrum is often referred to as “black light.” UVA LEDs are used in forensic investigation, mineral identification, counterfeit detection, and curing procedures for inks, coatings, and adhesives.

UVB (280 nm to 315 nm)

UVB encompasses the mid-range of UV wavelengths, which are between 280 and 315 nm. Given that it may damage DNA and is used in water filtration systems and sterilizing procedures, this spectrum is essential for germicidal applications. Additionally, medical phototherapy employs UVB LEDs to treat vitiligo and psoriasis, two skin disorders.

UVC (100 nm to 280 nm)

Between 100 nm and 280 nm, UVC is the short-wave, germicidal UV radiation. It is very useful in disinfection applications since it is very efficient at eliminating bacteria, viruses, and other pathogens. In hospitals, labs, and water treatment facilities, air and surface sterilization systems are equipped with UV LED modules that produce UVC light.

Tailoring Wavelengths for Specific Applications

One of the key benefits of UV LED module is their ability to modify and adjust the output wavelength. LEDs may be specifically engineered by manufacturers to emit certain UV wavelengths, making them suited for targeted applications. For instance, researchers may create UV LEDs with wavelengths tailored for targeted therapy for medical purposes, leading to more effective treatments and fewer adverse effects.

Factors Influencing Wavelength Precision

The precision and accuracy of the wavelength radiated by UV LED modules is influenced by a number of variables. The LED’s building materials for semiconductors have a significant impact on the output wavelength. Additionally, the ultimate wavelength range is influenced by the manufacturing procedure and chip design. To achieve uniform wavelength output across various LED units, producers must maintain tight quality control procedures.


UV LED modules are adaptable light sources with a broad spectrum of wavelengths that enable a wide variety of applications in several sectors. UV LED wavelengths may be adjusted, which enhances their usefulness in specialized applications. UV LED modules will probably experience increasingly more refined wavelength ranges as technology develops, opening up new opportunities and increasing their usefulness in the future.