Optical properties of lithium borate glass with Er+3 ions, prepared by the melt-quenching technique are investigated. The amorphous nature of prepared sampled was confirmed by XRD. The anaiysis of optical absorption spectra shows that the fundamental absorption edge is around 380nm. it is not sharply defined which characterizes the glassy nature of the samples. Absorption, excitation and emission spectra of all the samples were studies. The absorption peaks shows an increasing trend in intensity with the rare earth ion concentration which also confirms the incorporation of Er+3 in borate matrix. The direct and indirect band gap energies of all the sample were calculated and found that they are decreasing with increase in concentration of the dopant FWHM of the emission spectra in the visible region is found to be 10nm and the sharp peak indicates that this material can be used for laser studies