Patent ID: 8152798

Claim:
A variable-angle illumination surgical system comprising: a light source for providing a light beam; an optical cable, optically coupled to the light source for receiving and transmitting the light beam; a handpiece, operably coupled to the optical cable; an optical fiber, operably coupled to the handpiece, wherein the optical fiber is optically coupled to the optical cable to receive and transmit the light beam; an optical assembly; and a cannula, wherein the cannula is operably coupled to the handpiece and optical assembly for housing and directing the optical assembly to illuminate an area; wherein the optical assembly is optically coupled to a distal end of the optical fiber for receiving the light beam and providing the light beam to illuminate the area; wherein the optical assembly comprises a male compound parabolic concentrator (CPC) cone element nested within a female CPC-cone element, wherein the female CPC-cone element translates over the male CPC-cone element to vary an air gap formed therebetween and thereby vary the off-axis, angular spread of light emitted out of a distal end of the cannula.