A high-efficiency, wide-angle illumination surgical system is disclosed, oneembodiment comprising: a light source for providing a light beam； an opticalcable,optically coupled to the light source for receiving and transmitting the lightbeam； ahandpiece, operably coupled to the optical cable； an optical fiber, operablycoupled to thehandpiece, wherein the optical fiber is optically coupled to the optical cableto receive andtransmit the light beam, an optical element, optically coupled to a distal endof the opticalfiber, for receiving the light beam and scattering the light beam toilluminate an area,wherein the optical element comprises a compound parabolic concentrator('CPC') cone； anda cannula, operably coupled to the handpiece, for housing and directing theoptical fiber andthe optical element. The CPC-cone optical element angularly spreads the lightbeam out to ahigh off-axis angle and emits the light out of the distal end of the cannulawith highefficiency.
