Calibrated networkable UV-C sensors for real-time dosage characterization of UVGI devices

Greg McKee; Dan Scharpf; Lorne C. Loudin

doi:10.1117/12.2605747

3 March 2022 Calibrated networkable UV-C sensors for real-time dosage characterization of UVGI devices

Greg McKee, Dan Scharpf, Lorne C. Loudin

Proceedings Volume 12022, Light-Emitting Devices, Materials, and Applications XXVI; 1202207 (2022) https://doi.org/10.1117/12.2605747
Event: SPIE OPTO, 2022, San Francisco, California, United States

Conference Poster

Abstract

Ultraviolet Germicidal Irradiation (UVGI) is a proven method of disinfection for both bacterial and viral pathogens. Since the acceleration of the COVID-19 pandemic caused by SARS-CoV-2, the industry has witnessed significant technological innovation and an influx of UV-C LEDs, devices, and disinfectant enclosures. To ensure germicidal efficacy, UV-C LEDs and associated devices need accurate characterization of their optical power and irradiance. When UV-C sources are installed in enclosures and rooms, additional challenges arise that need to be evaluated to ensure germicidal efficacy is maintained. These challenges include 1) under- and over-dosing due to non-uniformity of UV-C dosage, 2) poorly understood room/chamber dynamics and reflectance, 3) shadowing, and 4) sensor, material, and source degradation. Here, we introduce a new detector portfolio that is calibrated at critical UV-C wavelengths, such as 265 nm, and enables real time UV-C Irradiance measurements at near-field and far-field. Temporal monitoring of irradiance allows for real time dosage calculation. Seasoned optical components ensure accurate detector performance and enable source output degradation monitoring. An adaptable API, network capability, and a dashboard facilitate simultaneous monitoring of multiple detectors and easy integration with existing installation infrastructure. With a proprietary cosine diffuser, these detectors include an exceptional f2 directional response making them ideal for deployment in rooms, enclosures, and HVAC systems.

Conference Presentation

Citation Download Citation

Greg McKee, Dan Scharpf, and Lorne C. Loudin "Calibrated networkable UV-C sensors for real-time dosage characterization of UVGI devices", Proc. SPIE 12022, Light-Emitting Devices, Materials, and Applications XXVI, 1202207 (3 March 2022); https://doi.org/10.1117/12.2605747

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