THE CAPACITY OF THE GLASS TO ALLOW THE PASSAGE OF LIGHT AS AN INSURANCE FACTOR OF WORKPLACE ERGONOMICS

Abstract

The level of illumination of the space where a human operator works is one of the factors considered when evaluating the ergonomics of a workplace. The presence of a glass window can contribute to the absorption of part of the light emitted by a natural or artificial source. To evaluate the extent to which different categories of glass absorb a greater or lesser amount of light energy, experimental research was designed. The input factors were the distance from the optical subsystem corresponding to the light source, the nominal power of the compact fluorescent light bulb, and the supply voltage. The illuminance measured with a photometer was selected as the output parameter. Samples of ordinary glass, sandblasted glass, and decorative glass were considered. The experimental results were mathematically processed using specialized software. Power-type functions were determined, which highlight the intensity of the influence exerted by the input factors on the output parameter considered. It was found that for the experimental conditions considered, the strongest influence is exerted by the energy supply voltage of the bulb, followed by the distance from the light source and the nominal power of the bulb.