Comprehensive evaluation of interior lighting

Abstract

Paper deals with problematic of evaluation artificial and daylight as one medium. By this assumption we have to deal with the different evaluation of each lighting system. Whereas artificial light is evaluated by the measured or calculated value of illuminance stated in lux, daylight is evaluated by the value of daylight factor expressed in %. In paper is discussed the example of the possible lighting calculation by using the light vector to define illuminance in the field of rectangular light source such as window, problematic of various conditions of daylight and possible using of this method.