Critical Assessment of Optical Sensor Parameters for the Measurement of Ultraviolet Led Lamps

Measurement of light output from ultraviolet (UV) light-based devices is critical to understanding the capability of the device. Optical sensors such as radiometers and dosimeters can possess different angular responses and are sensitive to many parameters in the measurement set-up. This work has been designed to quantify the effect of multiple parameters on the measurements obtained from optical sensors to provide inputs for validating measured data for ultraviolet sources. Multiple light sources operating in the ultraviolet range have been measured and a comparison between different sensors is presented. The angular response has been evaluated for each detector and compared with an ideal cosine response. The effect of measured intensities on the sensor as a function of temperature was also measured. Finally, the effect of ambient light and the integration time on the measured data was investigated