In our modern days, and among last years, lights deigning had been developed rapidelly. Changing principles from scratch designing and practical testing of designed lights to such a simulation over some programs over computers. One of the most known programs is DIALux program.

It could be used by architectures to design a specific area and distribute lights in among. Specifiying hight and other specifications, in order to making needed calculations of lumenity and light intisity true. This simulation makes lights implementation less costly, faster in time, and more reliable for changes in implementation.

Finally and as a conclusion. DIALux is a very handy program used for interior and outsider light designing in different simple and complex projects; with a capability to provide correct photometric results or even false color distribution.