| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a wide-angle surgical illuminator for ophthalmology, not requiring high accuracy for manufacturing the surface of a lens used in the tip of the illuminator. <P>SOLUTION: According to one embodiment, this gradient index surgical illuminator includes: a light source adapted to provide 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 and optically coupled to the optical cable for receiving and transmitting the light beam; an optical element including a gradient index lens, and optically coupled to the distal end of the optical fiber for receiving the light beam and transmitting the light beam to illuminate a surgical field; and a cannula, operably coupled to the handpiece, for housing and directing the optical fiber and the optical element. The optical element can be a small-gauge, divergent gradient index concave lens having a distal surface coincident with the distal end of the cannula. <P>COPYRIGHT: (C)2008,JPO&INPIT |
