Critical assessment of optical sensor parameters for the measurement of ultraviolet LED lamps

Evaluation of the uniformity of UVA LED illumination on flat surfaces: Discrete ordinate method, single axis, and surface scanning radiometry

“…Spectral measurements of the LED used in the lamp verify that the peak begins at 353 nm, confirming no signal is out of range of the radiometer. Good agreement between an ideal cosine response and the measured angle of acceptance for this radiometer has been shown previously in literature [ 22 ]. The radiometer is calibrated over the full spectral range (350–850 nm), with the user able to access these calibrations by entering any wavelength value in the calibration range into the power meter.…”

“…It is also important to consider the angle of acceptance of the radiometer used in this paper. It has been shown in literature that the Ophir PD-300 R M-8W has an angle of acceptance of 114.5°, which is considered high for radiometers [ 22 ]. As a result of this high angle of acceptance, the radiometer will be measuring incident radiation from across the lamp surface at short working distances.…”

Removal of Diclofenac by UV-B and UV-C Light-Emitting Diodes (LEDs) Driven Advanced Oxidation Processes (AOPs): Wavelength Dependence, Kinetic Modelling and Energy Consumption

“…Ferrioxalate actinometry was chosen over other experiments for its high reproducibility and the economic and environmental sustainability of the materials. The intensity and the spectra of the UV LED lamps were also measured by an ILT spectroradiometer (2003357U1, ILT), which proved to work well in the UV range considered [22]. It is worth mentioning that the area considered in the chemical actinometry corresponds to the part of the plane crossing the middle of the quartz tube irradiated from the lamps (108 mm ⋅ 20 mm).…”