Optical considerations for design of surface disinfection devices based on UV-C LEDs

Pablo Fredes; Ulrich Raff; Ernesto Gramsch

doi:10.1117/12.2603623

19 November 2021 Optical considerations for design of surface disinfection devices based on UV-C LEDs

Pablo Fredes, Ulrich Raff, Ernesto Gramsch

Proceedings Volume 12078, International Optical Design Conference 2021; 120780E (2021) https://doi.org/10.1117/12.2603623
Event: International Optical Design Conference - IODC 2021, 2021, Online Only

Abstract

Due to a serious pandemic scenario, the surface disinfection process using monochromatic light sources based on UV-C LEDs is becoming more and more required. A brief review of the optoelectronics parameters of the devices based on UV-C LEDs light sources and the UV-C dose required to achieve a 99,9% of inactivation on surfaces (3 log reduction) of human Coronavirus (HCov-OC43 used as SARS-CoV-2 surrogate) has been prepared. A new parameter labeled as “homogeneity factor” has been defined to be applied on a bounded area where the homogeneity of the distribution requires a reliable average dose.

Conference Presentation

Citation Download Citation

Pablo Fredes, Ulrich Raff, and Ernesto Gramsch "Optical considerations for design of surface disinfection devices based on UV-C LEDs", Proc. SPIE 12078, International Optical Design Conference 2021, 120780E (19 November 2021); https://doi.org/10.1117/12.2603623

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