Standardization of Broadband UV Measurements

Published

January 1, 2013

Author(s)

George P. Eppeldauer

Abstract

The CIE standardized rectangular-shape UV response functions can be realized only with large spectral mismatch errors. The spectral power-distribution of UV sources is not standardized. Accordingly, the readings of different types of UV meters, even if they measure the same UV source, can be very different. In order to solve this problem, available UV detectors and UV meters used for irradiance measurement from 365 nm sources were evaluated. The spectral product of the source-distribution and the meter’s spectral-responsivity were calculated for different combinations to estimate broad-band signal-measurement errors. Standardization of both the UV source-distribution and the measurement procedure is recommended here in an example where 365 nm sources are measured with UV-A meters. The goal is to perform uniform broad-band UV measurements with low uncertainty. It is shown what spectral responsivity function(s) is needed for new and existing UV irradiance meters to perform low-uncertainty broadband (with ~365 nm peak) measurements.

Citation

Standardization of Broad Band UV Measurements for 365-nm LED Sources

Issue

9

Pub Type

Others

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Keywords

365 nm sources, broadband UV measurement, CIE UV-A function, spectral mismatch, standardization, ultraviolet, UV sources, UV meters

Citation

Eppeldauer, G. (2013), Standardization of Broadband UV Measurements, Standardization of Broad Band UV Measurements for 365-nm LED Sources, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=913173 (Accessed December 14, 2024)