12. Future WorkThe main problem when designing a fiber optic daylighting system is how to get the light into the fiber. The main focus of future work should therefore be developing efficient light harvester designs and performing accurate calculations of their performance. An efficient, reliable and preferably inexpensive light collector forms the basis for any further development of a functional fiber optic daylighting system. A crucial issue when designing light collectors is the amount of natural light available. Since it seems more viable to collect direct sunlight only for fiber optic systems, it is important to have data on daylight hours at the location of interest. Perhaps we should study a place whose weather and climate are typical of some interesting places. How many hours of sunshine are there per year, how often and in what way does the weather situation change, how intense is the sunlight, etc. A system that cannot provide sufficient lighting continuously will hardly be considered for installation anywhere, meaning this problem must be addressed one way or another. A fiber optic daylighting system cannot work alone; there must be some sort of backup or combination with another light source. For this reason, one of the goals of the next seminar should be to propose light sources that can be used in combination with fiber optic daylighting systems and effective ways to combine this natural and artificial light. This study mainly deals with generic concepts and ideas. It would therefore be interesting to deepen the study, in particular on certain essential subjects. Examples of such topics would be:• A detailed study of the available daylight and its regularity at a chosen location.• Developing the design...... middle of paper ......red by the pyranometer and the luminous flux the efficiency of a solar luminaire was slightly higher when using the black tube (Figure 35) than when it was not. When regulating artificial lights by the signal from indoor luminance sensors, problems with oscillation of artificial lights occurred. If you design the controller and place the sensors correctly, it should be possible to balance the artificial lights by an indoor sensor. Further research into proper regulation of indoor sensors is needed, but the interiors in which solar lights are used vary. It is therefore difficult to produce a standard configuration for the regulation of interior sensors. Therefore, my recommendation is to use the signal from the light sensor on the SP3 collector to balance the artificial light and find a way to minimize the response time of the regulation, since the sunlight will not wait..