Thermoluminescent (TL) phenomenon is present in some phosphor materials previously exposed to the ionizing radiation. This property can be useful for detecting irradiated foodstuffs and for radiation dosimetry also. In TL the material is stimulated by heating which provokes the recombination among trapped charges in the defects and the information about the irradiation dose is given. Anyway in TL it is impossible to maintain the dose information in the material after successive readouts; on the contrary, the optically stimulated luminescence (OSL) technique gives the possibility for multiple readouts concerning the given dose. In this stage it is important to develop a customized reader for the characterization of luminescent materials that currently are used in dosimetry field and for TL material research. In this seminary some results of TL property and design in lab of an OSL equipment will be present.