How to choose LED light source for UV disinfection?

Latest update time：2023-12-14

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In the medical field, ultraviolet disinfection is a common disinfection method. It mainly uses ultraviolet radiation to damage microorganisms (bacteria, viruses, spores and other pathogens) and destroy the function of nucleic acids to kill microorganisms, thereby achieving the purpose of disinfection. In view of the convenience and efficiency of ultraviolet disinfection, coupled with the development of ultraviolet LED solid-state lighting sources, the application scope of ultraviolet disinfection has been continuously expanded in recent years, and its presence can be seen in the fields of disinfection in public places and household consumption.

As the application landscape expands, how to weigh the requirements of different application designs and choose a more suitable UV LED light source has become a topic that developers must face.

Figure 1: UV irradiation energy required for inactivation of different microorganisms

The inactivation effect of microorganisms is related to the ultraviolet energy absorbed by them, and the total amount of ultraviolet irradiation depends on many variables, such as irradiation time, distance, radiation output power, LED light wavelength, etc. Among them, wavelength often plays a crucial role, since the absorption efficiency largely depends on the wavelength and peaks at an average of 265 nm .

So, in the final product design process, how to scientifically evaluate the impact of these variables on the disinfection effect, and then choose better UV LED light sources and solutions? Don’t worry, Vishay ’s engineers have already done this for you!

To this end, Vishay 's engineers built an experimental platform and conducted dozens of actual tests on Vishay's new series of ultraviolet LED lamps, comprehensively observed and analyzed the killing effects and efficiencies of different products and solutions, and targeted several common UV disinfection scenarios - such as button disinfection, air disinfection and object surface disinfection - provide suggestions for program optimization.

All these experimental results are written in the following technical white paper!