Ultraviolet (UVC) Lighting

What is Ultraviolet (UVC) Lighting?

Ultraviolet (UV) radiation is a natural component of sunlight and is generally categorized into three wavelength ranges: UVA, UVB, and UVC. Most UVA radiation and a portion of UVB radiation reach the Earth’s surface, while UVC radiation from the sun is absorbed by the atmosphere, primarily by the ozone layer. Ultraviolet light is largely invisible to the human eye and spans a range of wavelengths with different characteristics and applications. UVC wavelengths, particularly around 254 nm, are commonly used in germicidal ultraviolet lighting applications.

UVC Light and 254nm Germicidal Technology UVC light covers wavelengths from approximately 100 to 280 nanometers (nm). Within this spectrum, 254nm UVC is one of the most widely used wavelengths for germicidal applications involving air, water, and surfaces. Low-pressure UV lamps are among the most commonly used germicidal lamps and produce their primary ultraviolet output near 254nm. When microorganisms receive a sufficient dose of UVC radiation, the energy can damage their DNA or RNA, interfering with their ability to replicate and reproduce. This makes 254nm UVC technology highly effective for the inactivation of many types of bacteria, viruses, mold, fungi, and other microorganisms. UVC technology has been used for decades in applications such as water treatment, HVAC systems, air-treatment equipment, laboratories, commercial facilities, and surface-disinfection systems. Its effectiveness depends on factors including UV intensity, exposure time, distance, lamp output, and whether the microorganism is directly exposed to the UVC radiation. Because conventional 254nm UVC radiation can be harmful to the skin and eyes, systems should be designed to prevent direct human exposure. One common application is installation within enclosed residential and commercial HVAC ducts or air-treatment equipment, allowing UVC technology to operate while remaining isolated from building occupants. LSE Lighting® specializes in professional-grade 254nm UVC lamps for air, water, surface, OEM, and specialty ultraviolet applications.