| 摘要 |
PROBLEM TO BE SOLVED: To provide an OCT system capable of detecting approach of a probe tip to a living tissue. SOLUTION: This OCT system is equipped with a sheath whose tip is blocked, having a light transmission property at least on the tip or on a tip periphery; an optical fiber inserted into the sheath, for guiding light to the tip periphery of the sheath; the first light source for supplying low coherent light to the optical fiber; the second light source for supplying monitor light to the optical fiber; an optical system having a constitution wherein the low coherent light emitted from the optical fiber is deflected approximately perpendicular to an optical axis of the optical fiber, and the monitor light emitted from the optical fiber is focused on an external prescribed position on the sheath tip side; a monitor light detection means for detecting the intensity of reflected light of the monitor light; and a presenting means for presenting a detection result of the monitor light detection means. COPYRIGHT: (C)2008,JPO&INPIT
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