The present work aims to use semi-microscopic and full microscopic methods to analyze experimental data for alpha elastically scattered by ^6,7Li, ⁹Be, and ¹¹B in the energy range from 26 to 166 MeV. In the semi-microscopic method, the double folding São Paulo Potential (SPP) was used as a real part of the optical potential, while the Woods-Saxon form was used as an imaginary part. In the present calculations, the real part of the optical potential is derived by folding the nucleon-nucleon (NN) interaction into the nuclear matter density distribution of the projectile and target nuclei using the computer code SPOMC3. The optical model parameters and the normalization factors have an influence on the fitting of the experimental data. The volume integral of the imaginary part of the optical potential and the cross-section were found to be energy-dependent. In the full-microscopic method, the SPP was used as both a real and an imaginary part.