Applications

Sterilization

One of the most popular commercial uses of ultraviolet light sources is for disinfection. UV light, especially UV-C (λ < 280 nm), has a germicidal effect on micro-organisms living in air, water, and on surfaces. It is lethal to viruses, bacteria, bacterial spores, mold, mold spores, yeast, and algae. UV light is also used in medical sanitation and sterilization of work facilities. High power UV-C LEDs are suitable and can be used as point of use source or integrated into systems for disinfection purposes.

UV Curing

UV light is used for curing materials, a photochemical process in which high-intensity UV radiations instantly cure or “dry” inks, coatings, or adhesives. The process is widely used in dental treatments and manufacturing of semiconductors, integrated circuit components, and printed circuit boards (photolithography process). Miniature UV curing system with UVLEDs are efficient for these applications.

Bio-Detection

UV-C AlGaN-based light sources can play a key role in the field of biological and biomedical optical diagnostics using fluorescence spectroscopy techniques.

Forensic & Criminal Investigation

UV light is useful in identifying currency counterfeit and counterfeit-sensitive documents like passports, visas, and driver’s licenses.

UV light is also found in forensic light sources. It helps detect body fluids evidence and latent fingerprints by enhancing their visualization. Reliable portable UVLEDs based systems are very useful for these application.

Phototherapy

An effective option for long-term treatment of many skin conditions like psoriasis, vitiligo, eczema, and others is targeted exposure to UV-B radiations (280nm < λ < 320 nm). UVB LEDs are suitable for these applications.