| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an imaging catheter including an integrated reference reflector. <P>SOLUTION: The application is partially concerned with a lens assembly. The lens assembly includes a microlens (86), a beam director (90) optically connected to the microlens and a substantially transparent thin film (94). The substantially transparent thin film bidirectionally transmits light and can generate back scattering of a controlled quantity. Further, the thin film surrounds a part of the beam director. The lens assembly can be used for a sample arm of an OCT system. Back scattering from the thin film can be used for controlling a path length of a reference arm to a path length of a sample arm (namely to detect z offset). <P>COPYRIGHT: (C)2012,JPO&INPIT |
