To develop efficient upconversion laser materials in the visible region an active lead borate glasses doped with Er³⁺/Yb³⁺  rare earth ions (GEY) has been studied extensively. In this investigation characterization techniques like Optical absorption, FTIR and photoluminescence were recorded and the data was analyzed. To evaluate the values of Ω₂, Ω₄ and Ω₆ Judd-Ofelt theory has been applied to the f ↔ f transitions. Based on Judd–Ofelt theory branching ratio (β_r) oscillator strength and the radiative life time (τ_R) values were determined. The upconversion spectra exhibited three emission bands at around 525 nm (²H_11/2 ® ⁴I_15/2), 545 nm (⁴S_3/2 ® ⁴I_15/2) and 660 nm (⁴F_9/2 ® ⁴I_15/2). The energy transfer mechanism between Yb³⁺ and Er³⁺ was discussed very clearly. Comparing the data obtained in other Er³⁺/Yb³⁺ doped materials, the lead bismuth gallium borate glasses doped with 0.6 mol% of Er₂O_3­/0.2 mol% of Yb₂O₃ ions are suitable materials for developing red upconversion lasers in the visible region.