Images at 0.96 &mgr;m of 10.6‐&mgr;m illuminated objects were obtained by the parametric image upconversion technique. The nonlinear material used in this experiment was a single crystal of proustite pumped by 1.06‐&mgr;m radiation from a single‐mode Nd:YAG laser. Angular resolution of about 3 mrad and a 12‐deg field of view were obtained. The upconverter was operated in a Fourier‐space configuration and gave nearly diffraction‐limited performance.