This thesis presents a calculation of correction factors for reduce uncertainty in the calibrated illuminance lux meters using different light sources. The calculations were prepared using the MATLAB programme and then visualised with Excel.
The thesis defines photometry, and presents the different photometric quantities used. The next chapter describes the photometric methods used in the past and now. I go on to present the modern photometer, the illuminance meter and how it works. Moreover, I present the correction factor and the data needed to calculate it. The thesis further describes how the correction factors were calculated and what data was used, and gives a clear overview of the results. To calculate correction factors, I used data from several types of light sources for the calibration of lux meters as to have large database to allow easier and more reliable calculations. The thesis also identifies a possible alternative light source for the one used for calibrating light meters now.
|